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CC RESO 1374RESOLUTION NO. 1374 (2018) A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON ADOPTING AS A REFERENCE GUIDELINE OF THE CITY, THE BOTHELL 2018 WASTEWATER SYSTEM COMPREHENSIVE PLAN UPDATE WHEREAS, the City operates Sanitary Sewer Utility to provide its residents with uninterrupted sanitary sewer collection service; and WHEREAS, it is prudent to have a long term planning strategy for the City's Sanitary Sewer Utility; and WHEREAS, the Wastewater System Comprehensive Plan Update has been prepared in a manner that is consistent with the Washington State Department of Ecology requirements as specified in the Washington Administrative Code (WAC) Chapter 173-240-050; and WHEREAS, the City Council has determined that following this plan would be in the best interest of the Utility and the Bothell residents served by it. NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON, DO RESOLVE AS FOLLOWS: Section 1. The 2018 Wastewater System Comprehensive Plan Update, attached as Exhibit A, and incorporated by this reference as if set forth in full is hereby adopted as a reference guideline of the City. Section 2. The City Clerk is authorized to make necessary corrections to this resolution including, but not limited to, the correction of scrivener's/clerical errors, references, resolution numbering, section/subsection numbers and any references thereto. PASSED this 3rd day of April, 2018 ATTEST/RUTH E NTI CATE D: LAURA HATHAWAY CITY CLERK APPROVED: 'ANDSEW J. RHEAUME MAYOR FILED WITH THE CITY CLERK: Jul PASSED BY THE CITY COUNCIL: r r RESOLUTION NO.: 6 3 (201 ) Page 1 of 1 F -r ;;;;Z � CITY OF BOT ELL KING/SNOHOMISH COUNTY City of Bothell'' WASHINGTON WASTEWATER COMPREHENSIVE PLAN UPDATE ��d eco �0 �Ad 40195 S101NVAL G&O #16521 MARCH 2018 4c;1r.%y Bz Qsborne, hit-, CONSULTING ENGINEERS TABLE OF CONTENTS EXECUTIVE SUMMARY CHAPTER 1— INTRODUCTION WASTEWATER SYSTEM OWNERSHIP AND MANAGEMENT................................................1-1 PURPOSE.......................................................................................................................1-1 SCOPE...........................................................................................................................1-2 BACKGROUND INFORMATION........................................................................................1-3 History of Wastewater System Development....................................................1-3 SewerSystem Facility.......................................................................................1-3 Dateof Installation...........................................................................................1-3 Wastewater System Ordinance..........................................................................1-4 INVENTORY OF EXISTING FACILITIES.............................................................................1-4 RELEVANT PLANNING DOCUMENTS...............................................................................1-5 City of Bothell Documents................................................................................1-5 Other Relevant Documents...............................................................................1-5 INTERLOCAL AGREEMENTS............................................................................................1-5 COMPLETED CAPITAL IMPROVEMENT PROJECTS.............................................................1-5 CHAPTER 2 — BASIC PLANNING CRITERIA INTRODUCTION.............................................................................................................2-1 STUDYAREA................................................................................................................2-1 ADJACENT WASTEWATER SYSTEMS...............................................................................2-1 WATERSYSTEM............................................................................................................2-2 GROWTH MANAGEMENT ACT........................................................................................2-2 PLANNING PERIOD........................................................................................................2-2 ZONING AND LAND USE................................................................................................2-2 SERVICE AREA CHARACTERISTICS.................................................................................2-4 Topography......................................................................................................2-4 Climate.............................................................................................................2-5 SurfaceWater...................................................................................................2-5 Geology............................................................................................................2-5 Soils.................................................................................................................2-6 CriticalAreas....................................................................................................2-6 Erosion Hazard Areas.......................................................................................2-6 Seismic Hazard Areas.......................................................................................2-7 Wetlands...........................................................................................................2-7 FloodHazard Areas..........................................................................................2-7 SlideHazard Areas...........................................................................................2-7 WaterBodies....................................................................................................2-7 EXISTING SERVICE AREA...............................................................................................2-8 FUTURESERVICE AREA.................................................................................................2-8 Population........................................................................................................2-8 Existing Population...............................................................................2-8 Projected Population.............................................................................2-9 CHAPTER 3 — REGULATORY REQUIREMENTS INTRODUCTION.............................................................................................................3-1 LEGISLATION, REGULATIONS, AND PERMITS..................................................................3-1 Federal Clean Water Act...................................................................................3-2 Capacity, Management Operation and Maintenance..........................................3-3 EndangeredSpecies Act....................................................................................3-3 National Environmental Policy Act...................................................................3-4 Federal Clean Air Act.......................................................................................3-4 State Water Pollution Control Act.....................................................................3-4 State Environmental Policy Act........................................................................3-5 Growth Management Act..................................................................................3-5 Shoreline Management Act Permit....................................................................3-5 Floodplain Development Permit........................................................................3-5 Hydraulic Project Approval..............................................................................3-6 LocalPermits....................................................................................................3-6 Regulatory Agencies.........................................................................................3-6 United States Environmental Protection Agency...................................3-6 National Marine Fisheries Service.........................................................3-7 United States Army Corps of Engineers................................................3-7 Washington State Department of Ecology.............................................3-7 Washington State Department of Fish and Wildlife...............................3-8 State and Local Health Departments......................................................3-8 City and County Planning Policies....................................................................3-8 DESIGN, CONSTRUCTION, OPERATION, AND MAIN'I'ENANCE..........................................3-14 STANDARDS..................................................................................................................3-8 Pretreatment Requirements...............................................................................3-8 GravitySystem...............................................................................................3-10 LiftStations....................................................................................................3-10 On -Site Systems.............................................................................................3-10 RECLAIMED WATER STANDARDS.................................................................................3-10 Permitted Uses of Reclaimed Municipal Wastewater......................................3-11 Groundwater Recharge........................................................................3-13 Streamflow Augmentation...................................................................3-14 OtherUses..........................................................................................3-14 Reuse Area Requirements...............................................................................3-14 KCDNR Brightwater WWTF and Reclaimed Water Plan................................3-14 Potential for Irrigation Water Reuse................................................................3-15 Potential for Industrial Water Reuse................................................................3-15 Flushing of Sanitary Sewer Lines....................................................................3-16 Reclaimed Water Conclusion..........................................................................3-16 CHAPTER 4 — SYSTEM DESIGN CRITERIA INTRODUCTION.............................................................................................................4-1 DEFINITIONOF TERMS...................................................................................................4-1 Wastewater.......................................................................................................4-1 DomesticWastewater.......................................................................................4-1 Infiltration........................................................................................................4-2 Inflow...............................................................................................................4-2 Average Dry Weather Flow (ADWF)...............................................................4-2 PeakDomestic Flow.........................................................................................4-2 Maximum Winter Month Flow.........................................................................4-2 Peak Wet Weather Flow (PWWF)....................................................................4-3 WASTEWATER FLOW DESIGN CRITERIA.........................................................................4-3 Average Domestic Flow....................................................................................4-3 Wastewater Equivalent Residential Unit(ERU).....................................4-5 Domestic Flow Peaking Factor.........................................................................4-5 Infiltration and Inflow.......................................................................................4-6 SUMMARY OF WASTEWATER FLOW DESIGN CRITERIA...................................................4-9 CHAPTER 5 — EXISTING FACILITIES INTRODUCTION.............................................................................................................5-1 RegionalSewer System....................................................................................5-1 EXISTING WASTEWATER COLLECTION SYSTEM..............................................................5-1 DrainageBasins................................................................................................5-1 SewageLift Stations.........................................................................................5-1 LiftStation 1.........................................................................................5-1 LiftStation 2.........................................................................................5-2 LiftStation 3.........................................................................................5-2 LiftStation 4.........................................................................................5-2 ForceMains......................................................................................................5-4 GravityLines....................................................................................................5-4 Telemetry and Control......................................................................................5-5 SCADASystem....................................................................................5-5 DecantFacility..................................................................................................5-6 SEWERAGREEMENT......................................................................................................5-6 King County Agreement...................................................................................5-6 CHAPTER 6 — COLLECTION SYSTEM EVALUATION HYDRAULIC MODEL......................................................................................................6-1 MODELELEMENTS........................................................................................................6-1 FlowData.........................................................................................................6-2 Population.............................................................................................6-3 Infiltration and Inflow...........................................................................6-5 HYDRAULIC MODELING ANALYSIS................................................................................6-6 Year 2017 through 2036 Flows.........................................................................6-6 BuildoutFlows.................................................................................................6-6 Im SEWAGE LIFT STATION CAPACITY EVALUATION............................................................6-9 FORCE MAIN AND SIPHON CAPACITY EVALUATION........................................................6-9 CAPACITY EVALUATION SUMMARY.............................................................................6-10 COLLECTION SYSTEM CONDITIONS ASSESSMENT.........................................................6-10 CHAPTER 7 — OPERATION AND MAINTENANCE PROGRAM INTRODUCTION.............................................................................................................7-1 WASTEWATER SYSTEM ORGANIZATION.........................................................................7-1 Operator Certification.......................................................................................7-1 SYSTEM OPERATION AND CONTROL...............................................................................7-2 SCADASystem................................................................................................7-2 Monitoring Capabilities.........................................................................7-2 Alarms..................................................................................................7-2 PREVENTATIVE MAINTENANCE PROGRAM.....................................................................7-3 SCADASystem................................................................................................7-3 LiftStations......................................................................................................7-3 ForceMains......................................................................................................7-3 Gravity Sewer and Manholes............................................................................7-3 Fats, Oils and Grease Program..........................................................................7-4 EMERGENCY RESPONSE PROGRAM................................................................................7-4 Emergency Procedures......................................................................................7-4 Wastewater System Emergency Contact List.........................................7-4 PowerFailure........................................................................................7-5 Severe Earthquake.................................................................................7-5 SAFETY PROCEDURES....................................................................................................7-6 CUSTOMER COMPLAINT RESPONSE................................................................................7-6 SEWER SYSTEM STAFFING REQUIREMENTS ....................................................................7-7 ExistingProgram..............................................................................................7-8 City -Owned Facilities............................................................................7-8 PrivateFacilities....................................................................................7-8 Maintenance Planning Criteria..........................................................................7-9 StaffingLevels..................................................................................................7-9 CHAPTER 8 — CAPITAL IMPROVEMENT PLAN INTRODUCTION.............................................................................................................8-1 PROPOSED SYSTEM IMPROVEMENTS..............................................................................8-1 Gravity System Improvements..........................................................................8-2 GV -1: 1001h Avenue NE 10 -Inch Gravity Sewer Replacement (2019)...8-2 GV -2: NE 190th Street, NE 189"' Place, NE 1871" Street, 881h Avenue NE, and 891h Avenue NE Gravity Sewer Installation (2022) .............8-2 GV -3: Beardslee Place, Sunrise Drive and Valley View Street 8 -Inch Gravity Sewer Installation (202 1) .........................................8-3 GV -4: NE 196th Street and SR 527 10 -Inch Gravity Sewer Replacement (2019).........................................................................8-3 iv GV -5: NE 186`" Street and 98th Avenue NE Gravity 10 -Inch Gravity Sewer Replacement and Waynita Drive 12 -Inch Gravity Sewer Replacement (2018).........................................................................8-3 GV -6: SR 522 18 -Inch Gravity Sewer Replacement (202 1) ..................8-3 GV -7: Manhole Grade Adjustments (Overlay Program) and Small Works Improvements (2019-2038).............................................................8-4 GV -8: Annual I/I Improvements (2019-2038) .......................................8-4 GV -9: Canyon Creek 8 -Inch Bypass Sewer and 126th Avenue 10 -Inch Gravity Sewer Replacement (2023) ....................................8-4 GV -10: NE 175th Street 21 -Inch Gravity Sewer Replacement (2022)....8-4 GV -1 l: NE 101' Place NE 8 -Inch Gravity Sewer Replacement (2019).............................................................................................. 8-5 GV -12: 96th Avenue NE 8 -Inch Gravity Sewer Main Replacement (2019).............................................................................................. 8-5 GV -13: 94th Avenue NE 8 -Inch Gravity Sewer Replacement (2019).....8-5 GV -14: East Riverside Drive 8 -Inch Gravity Sewer Replacement (2023).............................................................................................. 8-5 GV -15: Lift Station 4 Abandonment (2019) .........................................8-6 GV -16: Downtown Revitalization NE 185th Street Reconstruction (2019).............................................................................................. 8-6 General System Capital Improvements.............................................................8-6 G-1: Infiltration and Inflow Studies (2019-2038) ..................................8-6 G-2: Wastewater Comprehensive Plan (2024) ......................................8-6 G-3: Fats, Oils, and Grease (FOG) Study (2019) ..................................8-7 Lift Station Capital Improvements....................................................................8-7 LS -1: Lift Station 1 Improvements (2020) ............................................8-7 DEVELOPER EXTENSION PROJECTS................................................................................8-7 CAPITAL IMPROVEMENTS PLAN SCHEDULE....................................................................8-8 CHAPTER 9 — FINANCIAL PROGRAM INTRODUCTION......................................................... EXISTING SERVICE RATES AND CHARGES .................. Sewer Rates .................................................. System Development Charge ........................ FINANCIAL ANALYSIS ............................................... u ................................................... 9-1 ................................................... 9-1 ...................................................9-1 ...................................................9-2 ...................................................9-3 LIST OF TABLES No. Table Page E-1 Study Area Population Projections................................................................... E-2 E-2 Summary of Wastewater Design Criteria......................................................... E-3 E-3 6 -year Capital Improvement Plan Summary ..................................................... E-4 E-4 Existing Sewer Base Rate (City Ordinance Nos. 2235 and 2248) ..................... E-5 E-5 Existing System Development Charge (City Ordinance No. 1370) ................... E-5 1-1 Wastewater System History..............................................................................1-3 1-2 Historical Growth of Sewer Service Connections..............................................1-4 1-3 Completed Capital Improvement Projects.........................................................1-6 2-1 Zoning..............................................................................................................2-3 2-2 Historical Growth of Sewer Service Connections..............................................2-9 2-3 Study Area Population Projections..................................................................2-10 3-1 Existing Wastewater Regulations......................................................................3-1 3-2 Setback Distances for Class A Reclaimed Water in the State of Washington ... 3-14 3-3 KCDNR Projected Peak Day Reclaimed Water Demand.................................3-15 4-1 Winter Water Use.............................................................................................4-4 4-2 King County Wet Weather Flow Monitoring Results........................................4-8 4-3 Reconfigured Basin 1/I Rates............................................................................4-9 4-4 Summary of Wastewater Design Criteria........................................................4-10 5-1 Inventory of Sewage Lift Stations.....................................................................5-3 5-2 Inventory of Force Mains..................................................................................5-4 5-3 Inventory of Lift Station Force Mains and Siphons...........................................5-4 5-4 Inventory of Gravity Lines................................................................................5-5 5-5 Vactor Decant and Solids Drying Facility.........................................................5-6 5-6 KCDNR Interceptor Connections......................................................................5-7 6-1 Collection System Information..........................................................................6-2 6-2 Projected Population by Basin..........................................................................6-4 6-3 Projected Infiltration and Inflow by Basin.........................................................6-5 6-4 Sewer Model Results........................................................................................6-7 6-5 Lift Station Capacity Evaluation Summary.......................................................6-9 6-6 Sewer Collection System Improvements.........................................................6-10 7-1 Emergency Phone List......................................................................................7-5 7-2 Emergency Response Procedures for an Earthquake.........................................7-6 7-3 Publicly -Owned Wastewater Infrastructure.......................................................7-8 7-4 Inspection and Maintenance Planning Criteria..................................................7-9 7-5 Estimated Staffing Levels...............................................................................7-10 8-1 Capital Improvement Project Summary.............................................................8-9 8-2 6 -Year Capital Improvement Project Schedule................................................8-10 9-1 Existing Sewer Base Rate (City Ordinance Nos. 2235 and 2248) ......................9-2 9-2 2018 System Development Charge (City Resolution No. 1370) ........................9-2 9-3 Projected Revenues and Expenses: 2018 — 2024 ...............................................9-5 vi LIST OF FIGURES No. Fi!ure On or Follows Page 1-1 Location Map...................................................................................................1-2 1-2 Aerial Map........................................................................................................ 1-2 2-1 City Limits, UGA and Study Area Boundaries..................................................2-2 Sewer Overflow Response Plan 2-2 Sewer Service Area Boundaries........................................................................2-2 Appendix F — 2-3 Zoning..............................................................................................................2-2 Rate and GFC Ordinances 2-4 Topography......................................................................................................2-6 2-5 Drainage Basins................................................................................................2-6 2-6 Critical Areas....................................................................................................2-6 2-7 Floodplains and Wetlands.................................................................................2-8 3-1 Brightwater Reclaimed Water Service Areas...................................................3-12 4-1 DOH Diurnal Curve..........................................................................................4-6 4-2 Reconfigured KCDNR Mini Basins..................................................................4-6 5-1 Regional Sewers...............................................................................................5-2 5-2 Sewer Basins....................................................................................................5-2 5-3 Sewer System Schematic..................................................................................5-2 5-4 Collection System.............................................................................................5-4 6-1 Modeled Sewer System.....................................................................................6-4 6-2 Modeled Deficiencies.......................................................................................6-6 7-1 Public Works Department Organizational Chart................................................7-2 APPENDICES Appendix A — Wastewater Agreements Appendix B — SEPA Checklist Appendix C — Design Standards Appendix D — Sewer Overflow Response Plan Appendix E — Modeling Data and Results Appendix F — Capital Improvement Program Detailed Cost Estimates Appendix G — Rate and GFC Ordinances Appendix H — Funding Source Alternatives vii EXECUTIVE SUMMARY The City of Bothell Wastewater Comprehensive Plan (the Plan) provides a long-term planning strategy for the City's sewer utility over the 6- and 20 -year planning periods. The Plan has been prepared consistent with Department of Ecology requirements as specified in the Washington Administrative Code (WAC) Chapter 173-240-050. The Plan represents a commitment by the City to pursue and implement the Plan's recommendations and capital improvements. PLAN SUMMARY Chapters 1 and 2 of the Plan provide background data, including a description of the service area, service area policies, and population projections. Chapter 3 presents applicable wastewater regulatory requirements. Chapter 4 characterizes the existing and projected wastewater flows, including infiltration and inflow. Chapter 5 provides background information about the City's existing facilities, including lift stations, force mains, and gravity systems. Chapter 6 is an evaluation of the collection system, including a description of the City's hydraulic model, and an evaluation of the treatment agreement, major gravity lines, lift stations, and force mains for existing and future flows. Chapter 7 presents a brief summary of the City's operation and maintenance program. Chapter 8 presents the recommended capital improvements, and Chapter 9 presents financing for the recommended improvements. The nine chapters of the Plan are followed by appendices that contain backup documentation. STUDY AREA The study area for the Plan covers approximately 3,750 acres, which is primarily defined by the area within the City limits south of the King County/Snohomish County boundary. Area within the City limits north of the King County/Snohomish County is served by Alderwood Water and Wastewater District (AWWD), with the exception of approximately 92 acres that is served by the City. Other areas along the western and southern edges of the City limits within King County are served by Northshore Utility District (Northshore), when Northshore is the logical service provider for gravity sewer service. The City's collection system also provides transmission for approximately 75 acres that is served by Woodinville Water District (WWD). The City's UGA Boundary, City Limits, and the Study Area Boundary are presented in Figure 2-1. POPULATION PROJECTIONS The City has developed 20 -year population projections for the City based on future land use and historical growth rates. The City's projected population for 2036 within the incorporated King County portion of the City, and the study area, is 27,121 for residential population, and 15,198 for employee population. Employee population includes the City of Bothell E-1 Wastewater System Comprehensive Plan Update March 2018 Cray & Osborne, Inc., Consulting Engineers student, staff, and faculty population of the University of Washington Cascadia Campus. Growth has been extrapolated from 2015 to 2036 to represent population projects for the 20 -year planning period based on the Washington State Office of Financial Management 2015 Population Trends and 2035 population and employment targets from City of Bothell's 2015 Imagine Bothell Comprehensive Plan. The study area includes one high school, three public elementary schools, two private elementary schools, and one private high school. The estimated student population of these schools for the 2015-2016 school year is approximately 5,000. The City residential population growth rate is applied to the existing school population to estimate future school populations. TABLE E-1 Study Area Population Projections Year Service Area Residential Population Service Area Employee Population (4) Service Area School Population(5) 2010 17,928(') 11,625 4,805 2015 21,933(2) 12,011 5,000 2016 22,155(3) 12,146 5,051 2017 22,381(3) 12,283 5,102 2018 22,608(3) 12,422 5,154 2019 22,838(3) 12,562 5,206 2020 23,070(3) 12,703 5,259 2021 23,304(3) 12,846 5,313 2022 23,541(3) 12,991 5,367 2029 25,268(3) 14,052 5,760 2030 25,525(3) 14,210 5,819 2031 25,784(3) 14,370 5,878 2032 26,046(3) 14,532 5,938 2033 2036 1 26,311(3) 27,121(3) 14,696 15,198 1 5,998 6,183 Buildout 36,055 20,801 8,206 (1) Estimated from 2010 Census data. (2) Estimated from the Washington State Office of Financial Management 2015 Population Trends. (3) Interpolated from 2010 Census data and 2035 information from the 2015 Imagine Bothell Comprehensive Plan. (4) Employee population includes student, staff, and faculty populations at the UW/Cascadia Campus. (5) School populations estimated based on actual enrollment for 2015-2016 plus populations for area private schools from Washington State Office of Superintendent of Public Instruction. School populations are projected at the same rate as residential population. E-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers WASTEWATER CHARACTERIZATION Table E-2 presents the wastewater flow design criteria used for the Plan. This includes the projected domestic flow, infiltration and inflow, and total peak wet weather flows for the study area. Existing infiltration and inflow is based on the findings of the King County Department of Natural Resources 2001/2002 Wet Weather Flow Monitoring Report. TABLE E-2 Summary of Wastewater Design Criteria Design Criteria 2016 2022 2036 Buildout[') Residential Population 22,155 23,541 27,121 36,055 Per Capita Domestic Flow cd 50 50 50 50 Residential Domestic Flow d 1,107,774 1,177,060 1,356,053 1,802,746 Employee Population (2) 12,146 12,991 15,198 20,801 Per Capita Employee Flow cd 30 30 30 30 Employee Domestic Flow ( d) 364,391 389,738 455,952 624,037 Student Population 5,051 5,367 6,183 8,206 Per Capita Student Flow ( cd) 16 16 16 16 Student Domestic Flow ( d) 80,813 85,868 98,925 131,299 Total Average Domestic Flow d 1,552,978 1,652,666 1,910,930 2,558,082 Domestic Peaking Factor (3) Peak Domestic Flow d 1.74 2,702,182 1.74 2,875,640 1.74 3,325,018 1.74 4,451,062 Sewered Area (acres)(4) 2,363 25,38 2,947 3,765 Infiltration and Inflow ( ad) 1,301 1,301 1,301 1,301 Infiltration and Inflow ( d) 3,074,263 3,302,263 3,834,264 4,898,265 Peak Wet Weather Flow d)(5) 5,776,445 1 6,177,903 1 7,159,282 9,349,327 (1) Buildout population assumed to occur in 2064 based on rate of 1.0 percent for residential population and 1.1 percent for employee population. (2) Employee Population includes student population for the University of Washington Bothell Campus (UW/Cascadia). (3) A domestic peaking factor of 1.74 was used per Figure 4-1. (4) Developed based on a GIS analysis of the area currently served with sewers and projected to the entire study area by buildout. (5) Peak Wet Weather Flow is the sum of Peak Domestic Flow and Infiltration and Inflow. OPERATION AND MAINTENANCE The City owns and operates a collection system that includes over 69 miles of gravity main, four lift stations, and over 1,900 linear feet of force main. The City's sewer is treated by King County Department of Natural Resources (KCDNR). Operational duties of City staff include maintaining lift stations, cleaning gravity mains, responding to system emergencies, and responding to customer issues. The City currently has 4.8 full-time City of Bothell E-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers employees operating and maintaining the sewer system, and estimates that 0.20 additional FTE will be required to achieve its maintenance program goals. CAPITAL IMPROVEMENT PROGRAM The Plan contains a list of projects for the City's capital improvement plan for the 6 -year planning horizon. These projects include lift station upgrades and gravity main improvements for increasing capacity and reducing infiltration and inflow. The City may reprioritize projects in the future to accommodate other agencies, unforeseen events, and budget constraints. Table E-3 summarizes the City's estimated annual capital improvement costs for the 6 -year planning horizon. A map showing the locations of the proposed projects is included in the back sleeve of the Plan, and individual project cost estimates are included in Appendix F. TABLE E-3 6 -year Capital Improvement Plan Summary Year Annual Capital Improvement Cost(') 2018-2019 $2,761,000 2020 $1,089,000 2021 $2,279,000 2022 $1,504,000 2023 $1,396,000 2024 $550,000 (1) Project Costs are in 2018 dollars. Construction Cost Index = 5932 (ENR, February 2018). FINANCIAL Table E-4 illustrates the City's monthly base and volume charges for sewer service. Table E-5 illustrates the City's sewer system development charges. The charge is imposed on new customers requesting sewer service. E-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers TABLE E-4 Existing Sewer Base Rate (City Ordinance Nos. 2235 and 2248) (1) The volume rate is charged per 100 cubic feet of excess. (2) During months when school is not in session for the entire month, the bimonthly charge is $304.51 per school. (3) Calculated by applying a 25 percent discount to Single -Family Residential rates. (4) Calculated by applying a 25 percent surcharge to rates inside city limits per City Ordinance No. 2105, passed in 2012. TABLE E-5 Existing System Development Charge (City Ordinance No. 1370) Customer Classification Year 2018 Rates Sewer Main Connection Charge Inside City Limits Bimonthly Base Rate Volume Rate(') Single -Family Residential $120.10 per dwelling unit $3.98 per CCF Senior Low Income Residential(3) $90.08 per dwelling unit $2.99 per CCF Multi -Family Residential $157.91 per dwelling unit $10.12 per CCF Schools $157.91(2per school $10.12 per CCF per building Commercial $157.91 per occupancy $10.12 per CCF Outside City Limits Bimonthly Base Rate(') Volume Rate (4) Single -Family Residential $150.13 per dwelling unit $4.98 per CCF Senior Low Income Residential $112.60 per dwelling unit $0 Multi -Family Residential $197.38 per dwelling unit $12.65 per CCF Schools $197.38 per school $12.65 per CCF per building Commercial $197.38 per occupancy $12.65 per CCF (1) The volume rate is charged per 100 cubic feet of excess. (2) During months when school is not in session for the entire month, the bimonthly charge is $304.51 per school. (3) Calculated by applying a 25 percent discount to Single -Family Residential rates. (4) Calculated by applying a 25 percent surcharge to rates inside city limits per City Ordinance No. 2105, passed in 2012. TABLE E-5 Existing System Development Charge (City Ordinance No. 1370) Customer Classification Unit Sewer Main Connection Charge Single -Family Residential dwelling unit $2,941.00 Multi -Family Residential per ERU $2,941.00 Commercial per ERU $2,941.00 School per ERU $2,941.00 All Other per ERU $2,941.00 The sewer utility is currently in good financial health, with enough revenue to cover KCDNR treatment charges, City operating expenses, and system improvement projects with modest rate increases. The City does not have particularly large reserves, but is operating with a positive net cash flow. City of Bothell E-5 Wastewater System Comprehensive Plan Update March 2018 CHAPTER 1 INTRODUCTION The Wastewater Comprehensive Plan (the Plan) is an update of the 2006 City of Bothell Sanitary Sewer System Plan. The Plan is prepared to conform to the requirements of the Revised Code of Washington (RCW) 90.48 and the Washington Administrative Code (WAC) 173-240-050. WASTEWATER SYSTEM OWNERSHIP AND MANAGEMENT The City of Bothell owns and operates a municipal wastewater collection system that primarily serves the King County portion of the incorporated City of Bothell. Other portions of incorporated Bothell are served by the Alderwood Water and Wastewater District (AWWD), Northshore Utility District (Northshore), and Woodinville Water District (WWD). The City of Bothell is a council -managed, first-class City, governed by seven elected City council members. The City's current mailing address is: City of Bothell 18415 101" Avenue NE Bothell, WA 98011 Figure 14 provides a vicinity and location map for the City of Bothell. Figure 1-2 provides an aerial map for the City of Bothell. PURPOSE The Plan has been developed to address the existing and future wastewater service issues facing the City of Bothell (City). The City has experienced rapid growth over the last 15 years and it is expected to continue in the future. As a result, the need to assess the existing sewer system facilities and to establish an effective plan for the future is critical to properly managing the City's expansion of sewer services. The purpose of this Plan is to address known issues, assess the condition and capabilities of the existing sewer system, develop a plan for future service within the defined study area, and to determine required system improvements, including project construction schedules and costs. City of Bothell 1-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers SCOPE This Wastewater Comprehensive Plan is organized into the following chapters: • Chapter 1, Introduction, includes descriptions of the purpose and scope of the Plan and background information to address the issues discussed in this Plan. • Chapter 2, Basic Planning Criteria, reviews general planning issues, including study area boundaries, physical environment, growth management, land use zoning, and population projections. • Chapter 3, Regulatory Requirements, consists of pertinent regulations that apply to the City's wastewater collection and pumping facilities. • Chapter 4, System Design Criteria, includes key terms for the discussion of wastewater flows and development of design criteria for existing and future flows. • Chapter 5, Existing Facilities, presents a description of the wastewater collection system as well as sewer agreements with adjacent utilities. • Chapter 6, Collection System Evaluation, describes a computer model of the sewer collection system components, including lift stations, force mains, and major gravity lines; and evaluates the future service system of the study area and provides recommendations for the plan that will best meet the City's future needs. The chapter also provides modeling results at current and future flows to identify system capacity needs. • Chapter 7, Operation and Maintenance, provides an overview of the City's operation and maintenance program including the City's operational scheme and describes the maintenance program, including recording keeping, and preventative maintenance procedures. Chapter 8, Capital Improvement Plan, recommends sewer system improvement and provides an implementation schedule for those improvements. Chapter 9, Financial Program, provides an assessment of current financial status of the utility, discusses available and potential revenue sources for system improvements, reviews the General Facilities Charge, develops cost for additional staff, and reviews Operations and Maintenance (O&M) costs related to the recommended Capital Improvement Program (CIP). 1-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update f;rr7 5C)UND LTE ii s CITY OF BO HE L r R SNOHOMISH COUNTY KING COUNTY WOODINVILLE 1: tE i KIRKL—AND- ,f r ->' REDMOND E (37 TON 02 N 6,000 121 000 Feet CITY OF BOTHELL WASTEWATER COMPREHENSIVE PLAN FIGURE 1-1 LOCATION MAP ftlb Gray 8c e, Inc. CONSULTING ENGINEERS \LABothell\16521 Sewer Comprehensive Plan\GISWICINITY.mxd Gray & Osborne, Inc., Consulting Engineers BACKGROUND INFORMATION HISTORY OF WASTEWATER SYSTEM DEVELOPMENT The majority of the information that is provided in this section is taken from previously completed planning documents. The initial City sewer collection system was first constructed in 1960 through the development of a Utility Local Improvement District (ULID). Table 1-1 provides a list of sewer collection system facilities with their associated dates of installation. TABLE 1-1 Wastewater System History Sewer System Facility Date of Installation Bothell ULID formed 1958 Initial sewer collections stem constructed 1960 City enters into agreement with METRO (now called King County Department of Natural Resources) for sewage treatment 1961 Lift Station 1 Site 42 (1) 1990 Lift Station 2 Site 43 (2) 1983 Lift Station 3 Site 44 (3) 1980 Lift Station 4 (Site 45) 1984 (1) Upgraded in 2008. (2) Upgraded in 2014. (3) Upgraded in 2016. Table 1-2 presents the City's historical sewer service connections for the past 5 years. Based on this historical growth, the City has averaged approximately 1.7 percent growth annually. City of Bothell 1-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 1-2 Historical Growth of Sewer Service Connections Year Connections Per Year Total Connections Annual Growth (%)(1) 2012 -- 5,123 N/A 2013 93 5,216 1.8 2014 166 5,382 3.2 2015 33 5,415 0.6 2016 69 5,487 1.3 Average Annual Growth 1.7 (1) Annual growth in sewer connections from previous year. WASTEWATER SYSTEM ORDINANCES The City has adopted the following relevant ordinances as part of the Bothell Municipal Code (BMC), Section 18.03 Sanitary Sewers: • 18.03.1 l 0 Additions, betterments, extensions — Compliance with sewer comprehensive plan. • 18.03.120 Additions, betterments, extensions — Financing. • 18.03.130 Additions, betterments, extensions — Procedure. • 18.03.140 Additions, betterments, extensions — Construction. • 18.03.150 Additions, betterments, extensions — Maintenance. • 18.03. l 80 Additions, betterments, extensions — Reimbursement contracts. • 18.03.190 Additions, betterments, extensions — Oversizing. • 18.03.195 Sewer system — Prohibited. • 18.03.300 Rates, charges, classifications. • 18.03.3 10 Sewer main connection charge. • l 8.03.320 Sewer system facility charges. • 18.03.550 Adherence to METRO (King County Department of Natural Resources) standards applicable to wastes discharged. INVENTORY OF EXISTING FACILITIES The City does not own wastewater treatment facilities. All wastewater collected within the City is conveyed to the King County Department of Natural Resources (KCDNR) wastewater treatment facilities. The City's collection system includes four lift stations, approximately 1,900 linear feet of force main, and approximately 69 miles of gravity lines. An inventory and schematics of these facilities are included in Chapter 5, including a discussion of the sewer agreements the City maintains with KCDNR, Northshore, Alderwood Water and Wastewater District (AWWD), and Woodinville Water District (WWD). 1-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers RELEVANT PLANNING DOCUMENTS The following planning documents were prepared either for the City or for adjacent wastewater purveyors. CITY OF BOTHELL DOCUMENTS City of Bothell Water System Comprehensive Plan, Gray & Osborne, Inc., 2012. Imagine... Bothell, City of Bothell Comprehensive Plan, Updated 2015. City of Bothell Sewer Comprehensive Plan, Gray & Osborne, Inc., November 2006. OTHER RELEVANT DOCUMENTS 0 King County, 2001/2002 Wet Weather Flow Monitoring, June 2002. • Alderwood Water and Wastewater District Sanitary Sewer Comprehensive Plan, September 2017. • Northshore Utility District, Wastewater Comprehensive Plan, March 2009. • Northshore Utility District, Wastewater System Plan Amendment Totem Lake Capacity Analysis and Improvements, December 2016. • Woodinville Water District, General Sewer Plan, July 2007. • King County Department of Natural Resources, Updated Planning Assumptions for Wastewater Flow Forecasting, July 2014 INTERLOCAL AGREEMENTS The City maintains an agreement with King County that provides for the treatment and disposal of wastewater generated within the City. The City also maintains agreements with Northshore, WWD, and AWWD that provide for the collection of all wastewater generated within the City. A copy of each agreement is included in Appendix A and a further discussion is included in Chapter 5. COMPLETED CAPITAL IMPROVEMENT PROJECTS The capital improvement plan in the City of Bothell Sewer Comprehensive Plan prepared in 2006 by Gray & Osborne, Inc. recommended various improvements to the wastewater collection system for the City. Table 1-3 lists projects completed by the City since 2006. City of Bothell 1-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 1-3 Completed Capital Improvement Projects Year Completed Project Description 2016 Beardslee Boulevard 8 -Inch Gravity Sewer Replacement 2008 Lift Station I Improvements 2014 Lift Station 2 Improvements 2017 Lift Station 3 Improvements 1-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update CHAPTER 2 BASIC PLANNING CRITERIA INTRODUCTION The configuration of a sewer system can be influenced by many factors including development trends, political considerations, and topography. Sewer lines should follow natural drainage patterns to maximize gravity flow. A comprehensive sewer plan establishes a sewer service area based on topography, the drainage characteristics of the area, and the sewer provider's growth objectives. Modifications may then be made in consideration of the influence of existing facilities, political boundaries, and growth patterns before finalizing a specific plan. A comprehensive sewer plan must permit sufficient flexibility to provide for existing areas of need and the future development of areas in the planning basin. STUDY AREA The study area for the Plan covers approximately 3,750 acres, which is primarily defined by the area within the City limits south of the King County/Snohomish County boundary. Area within the City limits north of the King County/Snohomish County is served by Alderwood Water and Wastewater District (AWWD), with the exception of approximately 92 acres that is served by the City. Other areas along the western and southern edges of the City limits within King County are served by Northshore Utility District (Northshore), when Northshore is the logical service provider for gravity sewer service. The City's UGA Boundary, City Limits, and the Study Area Boundary are presented in Figure 2-1. ADJACENT WASTEWATER SYSTEMS The City's sewer service area is bordered to the north by AWWD, to the west and south by Northshore, and to the east by Woodinville Water District (WWD). Figure 2-2 illustrates the City of Bothell sewer service area and the boundaries of the adjacent sewer providers. The City sewer service area boundary differs slightly from the study area. The sewer service area boundary is based on the franchise boundaries for each of the sewer providers in the area. The City has agreements with the adjacent purveyors in some areas to serve customers within other purveyor's boundaries, and to allow adjacent purveyors to serve within the City. These agreements are generally in place to allow the area in question to be served by gravity by the appropriate sewer service provider. City of Bothell 2-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers WATER SYSTEM The City owns and operates a water distribution and storage system. Water is supplied by Seattle Public Utilities (SPU) at three master meter locations, and by agreement with Northshore Utility District. The City operates and maintains four storage reservoirs with a total capacity of 7million gallons, four booster stations, and over 115 miles of piping. GROWTH MANAGEMENT ACT The Growth Management Act (GMA) was enacted in 1990 to address the population growth that occurred in Washington State during the 1980s. To ensure a continuation of Washington's high quality of life, officials across the state have addressed growth management within various levels of government. The basic objective of the GMA is to encourage county and city governments to develop and implement a 20 -year comprehensive plan that incorporates their vision of the future, within the framework of the broader needs of the state. Under GMA, municipalities must coordinate their planning efforts with those of the county. The planning effort of a municipality includes the establishment of an Urban Growth Area (UGA). Generally, municipalities are to provide basic urban services, including water, sewer, education, police, and fire protection to all areas within their established UGAs. PLANNING PERIOD Due to the City's growth history and the need to provide sewer services for future growth, the City's wastewater system is in need of continuous evaluation and improvement. A planning period for the City's sewer system should be long enough to be useful for an extended period of time, but not so long as to be impractical. The City has adopted 6 -year and 20 -year planning periods to allow for the implementation of its capital improvement program. The 6 -year planning period for the City's Capital Improvement Plan is 2024, and the 20 year is 2038. The City will also analyze a build -out scenario to ensure proper sizing of facilities. ZONING AND LAND USE Figure 2-3 illustrates the land use and zoning within the City's UGA. Table 2-1 summarizes the land use within the entire City UGA and within the study area. 2-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update d m a d CLL = W N D s 0 J F, a Z W = .� w a� Z m O W N (D =Zlr {. �w �0 a D m 0D Ha o Z _ _' o w LL O _ w U� ��t LL w } ~ w } } Z 00: SO S Fo L o a :� U Uv) Z F ��s _ I'= w LU 008f a _ Val Q�. 75TH AVE SE 3N 3AV H199L 6th 6 O h 6 S rd2 ti �o Z 0 y U i S Z CirT1 � �ft�gRcq 2 0 x 0 V 'fit z c O c!) Z_ w U)•3N 3AVONZCL; r2f i.►r+.�w' !i 3N 3AV H10EL Ql- _,.... 35 3Atl Hl L6 45TH AVE SE Frr� Z 42, r �O—vr..rg < 24i .. 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BOJ" =��O�3N 3AV H16ZIk�r:. i N 3S 3AV H16E 0 1 04 ID id x N W It+� 3N 3AV HIM VE NE 96TH A 3s as H1VL AMUy rt i... tj w 3N IAV H1Y9 Z ' ••� S 3A� NVIOIi13W 3AV11111111311 3N 3Atl H10B h N 1 z a IN 3AV 08EL rS1° 3N DAV H199 3N 210 V1INVr)f ° � O p P H J 3N 3AV 1519 p�p �P� O�OPOP PV�NE i POPVPH 55TH M RAV H16Z Ly N'HH J° x 6jPS(c p4.0 N �5 Gray & Osborne, Inc., Consulting Engineers TABLE 2-1 Zoning Zoning Classifications Abbreviation City Zoning Acres Study Area Acres Agriculture AG 75.61 0.0 Campus C 150.2 150.2 Downtown Core DC 27.0 27.0 Downtown Neighborhood DN 50.0 50.0 Downtown Transition DT 40.5 38.6 General Commercial GC 39.7 39.7 General Downtown Corridor GDC 73.7 73.7 Neighborhood Business NB 9.3 0.0 Office Professional OP 4.8 0.0 Office Professional, Community Business, General Commercial OP, CB, GC 6.3 0.0 Office Professional, General Commercial OP, GC 14.9 0.0 Office Professional, Light Industrial OP, LI 10.3 10.3 Park and Public Open Space PPOS 97.1 97.1 Residential I DU/2,800 SQFT R 2,800 122.5 65.0 Residential I DU/2,800 SQFT), Mobile Home Park R 2,800, MHP 7.1 7.1 Residential I DU/2,800 SQFT), Office Professional R 2,800, OP 183.9 142.4 Residential (1 DU/2,800 SQFT), Office Professional, Community Business R 2,800, OP, CB 27.1 0.0 Residential (1 DU/2,800 SQFT), Office Professional, Neighborhood Business R 2,800, OP, NB 71.1 70.2 Residential 1 DU/4,000 SQFT) R 4,000 136.8 45.4 Residential 1 DU/4,000 SQFT), Mobile Home Park R 4,000, MHP 70.4 17.5 Residential (1 DU/4,000 SQFT), Office Professional, Community Business R 4,000, OP, CB 48.1 7.0 Residential 1 DU/40,000 SQFT R 40,000 270.9 213.8 Residential (1 DU/40,000 SQFT), Low Impact Development, North Creek Fish and Wildlife Critical Habitat Protection Area R 40,000, (LID), NCFWCHPA 134.7 0.0 Residential 1 DU/5,400 SQFT, attached or detached units R 5,400a 115.4 0.0 Residential (1 DU/5,400 SQFT, attached or detached units), North Creek Fish and Wildlife Critical Habitat Protection Area R 5,400a, NCFWCHPA 103.1 0.0 Residential (1 DU/5,400 SQFT, attached or detached units), Low Impact Development, North Creek Fish and Wildlife Critical Habitat Protection Area R 5,400a, (LID), NCFWCHPA 57.7 0.0 Residential (I DU/5,400 SQFT, attached or detached units), Office Professional R 5,400a, OP 137.4 74.2 Residential 1 DU/5,400 SQFT, detached units only) R 5,400d 109.8 18.8 Residential (1 DU/5,400 SQFT, detached units only), Specialized Senior Housing Overlay R 5,400d, SSHO 1.7 1.7 City of Bothell 2-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 2-1- (continued) Zoning Zoning Classifications Abbreviation City Zoning Acres Study Area Acres Residential 1 DU/7,000 SQFT R 7,200 898.8 35.9 Residential 1 DU/8,400 SQFT) R 8,400 702.1 513.4 Residential I DU/9,600 SQFT R 9,600 3220.9 1456.9 Residential 1 DU/9,600 SQFT), Mobile Home Park R 9,600, MHP 33.2 0.0 Residential (1 DU/9,600 SQFT), Low Impact Development, North Creek Fish and Wildlife Critical Habitat Protection Area R 9,600, (LID), NCFWCHPA 42.8 0.0 Residential (I DU/9,600 SQFT), North Creek Fish and Wildlife Critical Habitat Protection Area R 9,600, NCFWCHPA 27.1 0.0 Residential (I DU/9,600 SQFT), Specialized Senior Housing Overlay R 9,600, SSHO 41.1 41.1 Residential Activity Center, Office Professional, Community Business R -AC, OP, CB 53.6 0.0 Residential Activity Center, Office Professional, Community Business, Light Industrial R -AC, OP, CB, LI 523.0 418.1 Residential Activity Center, Office Professional, Community Business, Light Industrial, Motor Vehicle Sales Overlay R -AC, OP, CB, LI, MVSO 96.9 38.8 Residential Activity Center, Office Professional, Community Business, Motor Vehicle Sales Overlay R -AC, OP, CB, MVSO 154.9 0.0 Residential Activity Center, Office Professional, Light Industrial R -AC, OP, LI 548.6 0.0 Residential Activity Center, Office Professional, Neighborhood Business R -AC, OP, NB 102.0 18.2 Residential Activity Center, Office Professional, Neighborhood Business, Light Industrial R -AC, OP, NB, Ll 2.3 0.0 SR 522 Corridor 522 31.1 31.1 SR 522 Corridor, Mobile Home Park 522m MHP 9.1 9.1 Sunrise/Valle View SVV 9.1 9.1 Total 8714.0 3741.8 As shown in Figure 2-3, the study area is primarily residential. There are commercial and multi -family areas located near downtown, and in the valley between I-405 and Bloomberg Hill. SERVICE AREA CHARACTERISTICS TOPOGRAPHY The topography of the City has a significant influence on the sewer system. The elevation within the City ranges from approximately 20 feet above sea level to approximately 360 feet. Drainage in the City consists of the Sammamish River and North Creek drainage 2-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers basins, with the northeastern portion of the City draining toward North Creek, and the northwest and southern portions of the City draining toward the Sammamish River. All stormwater runoff within the City is tributary to Lake Washington. A small portion of the City along the eastern border of the sewer service area resides within the Little Bear Creek drainage basin. The topography of the City and the surrounding areas is shown in Figure 2-4. Figure 2-5 illustrates the drainage basins in the vicinity of the study area. CLIMATE The City receives an average of 38 inches of rain per year, with approximately 73 percent occurring in the 6 -month period from October to March. December is historically the wettest month, and July is the driest. Evaporation is less than 1 inch in December and approximately 6 inches in July. Winds generally blow from the west, bringing a moderate, maritime climate inland. The average annual temperature is about 53 degrees F. August is the warmest month with an average temperature of about 66 degrees F and December is the coolest month with an average temperature of about 41 degrees F. SURFACE WATER The surface water features within the study area include the Sammamish River and North Creek, and several other smaller tributaries to the Sammamish River. The Sammamish River flows into the Puget Sound via Lake Washington. The Sammamish River flows north from Lake Sammamish at Redmond, then turns west and flows through Bothell into the north end of Lake Washington. The Sammamish River drainage basin is approximately 212 square miles in size and historical records report peaks as high as 1,900 cubic feet per second (CFS). North Creek drains a 25 square mile basin and has experienced peak flows of over 680 CFS. North Creek flows from north of the City south to its discharge point at the Sammamish River. After decades flowing in an underground pipe, over 1/2 mile Horse Creek was daylighted through a new mixed use urban neighborhood as part of the city of Bothell's Downtown Revitalizations Plan. The creek discharges into the Sammamish River. GEOLOGY The geology within the study area, like most of King County, is characterized by deposits of glacial drift laid down during periods of glaciation. The most recent glaciation of the Puget Sound Lowland is termed the Vashon Glaciation, which scientists estimate began its northerly recession about 14,000 years ago. Subsequent erosion by ice melt cut steep City of Bothell 2-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers sided canyons in the major valley walls and transported the eroded material to lowland areas where alluviation created flat valley floors, such as those found along North Creek and the Sammamish River.' SOILS The classification of soils within the study area is provided by the U.S. Department of Agriculture Soil Conservation Service General Soil Maps. The major soil classifications within the study area are the Alderwood Association, the Everett Association, and the Puget-Earlmont-Snohomish Association. Alderwood Association is the predominant soil type and is characterized as moderately well drained, undulating to hilly soils that have dense very slowly permeable glacial till at a depth of 20 to 40 inches. The valley surrounding North Creek and the Sammamish River consists of Puget-Earlmont- Snohomish Association, which is characterized by poorly drained and nearly poorly drained, nearly level soils that have layers of peat within a few feet of the surface. Soils along the eastern edge of the study area are classified as Everett Association, consisting of somewhat excessively drained, gravelly, gently undulating soil underlain by sand and gravel on terraces. The Alderwood series is very slowly permeable, poorly draining silt or clay soils. Therefore, this series is not well suited for on-site sewage systems. a CRITICAL AREAS Critical areas within the study area include those classified as erosion hazard areas, seismic hazard areas, wetlands, flood hazard areas, slide hazard areas (steep slopes), and water bodies. The critical areas within the study area are shown in Figures 2-6 and 2-7. Erosion Hazard Areas Erosion hazard areas are especially subject to erosion, if disturbed, and may not be well suited for high-density developments or intensive land uses. Erosion hazard areas within the study area are located in the steep slopes of Bloomberg Hill on the eastern portion of the study area, Norway Hill on the southern portion of the study area, Maywood Hill in the north central portion of the study area, and Westhill on the western portion of the study area. Steep slopes are shown in Figure 2-6. ' Soil Survey King County Area Washington, US Department of Agriculture, 1973. 2 Soil Survey King County Area Washington, US Department of Agriculture, 1973. 2-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update 0 Z w W Z IT W 0, W" < wa LLo' 0 S2 < w < w W LL 0 .0 9, W, 'o w695 T Z) '6 - t; W LU M s I L4 ME Gray & Osborne, Inc., Consulting Engineers Seismic Hazard Areas Seismic hazard areas are those with low density soils that are more likely to experience greater damage due to seismic -induced subsidence, liquefaction, or landslides. Liquefaction zones within the City are located in the I-405 corridor surrounding North Creek and its tributaries, along the Sammamish River, and along the north slope of Norway Hill. Seismic hazard areas are illustrated in Figure 2-6. Wetlands Wetlands are defined by the EPA as areas that are inundated for at least part of the year. Wetlands support valuable and complex ecosystems and consequently development is severely restricted if not prohibited in most wetlands. Wetlands within the City are located primarily along the North Creek and Sammamish River drainage routes. Wetlands within the study area are illustrated in Figure 2-7. Flood Hazard Areas Flood hazard areas are areas adjacent to lakes, rivers, and streams that are prone to flooding during peak runoff periods. Flood hazard areas deserve special attention due to the sensitive nature of the ecosystems as well as the potential for damage to structures located in the floodplain. Flood hazard areas within the study area are illustrated in Figure 2-7. Slide Hazard Areas Slide hazard areas are those that are prone to unstable behavior due to steep slopes, lack of vegetation, or unconsolidated soils. The City has a number of steep slope areas, primarily along the hills and bluffs surrounding the study area. These areas include the slopes of Bloomberg Hill on the eastern portion of the service area, Norway Hill on the southern portion of the service area, Maywood Hill in the north central portion of the service area, and Westhill on the western portion of the service area. Steep slopes are illustrated in Figure 2-6. Water Bodies Lakes and streams are classified as sensitive areas due to the wide variety of plants and animals that they support. It should be noted that a majority of regulations discussed in Chapter 3 are designed to protect natural water bodies and their associated ecosystems. The primary water bodies within the study area are North Creek and the Sammamish River. City of Bothell 2-7 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers EXISTING SERVICE AREA The City's existing service area is shown in Figure 2-1, along with the City's UGA and City limits. The City provided water and sewer service to the entire City limits prior to the Canyon Park annexation in 1992. AWWD provides water and sewer service to the majority of the Canyon Park annexation, which includes the portion of the City located in Snohomish County. As shown, the wastewater service area boundary includes a majority of the population located in the King County (South Bothell) portion of the City, and a small portion of population located in Snohomish County (North Bothell) portion of the City. The remaining population is served by Northshore in South Bothell and the AWWD in North Bothell. The City also provides sewer service to small areas within W WD and transmission of sewer flows from an area within WWD prior to its discharge to KCDNR. These areas are served by the City by agreement (See Appendix A). FUTURE SERVICE AREA For the purpose of the Plan, it is assumed that the City's future wastewater service area will not change significantly. The Plan does not include areas currently served by other utility districts. The Plan will concentrate on in -fill of the City's existing wastewater service area for planning and wastewater flow projections. POPULATION To evaluate the wastewater system's existing facilities and determine requirements for future facilities, the City's existing and projected population has been estimated and is used to project future flows. Existing Population Prior to the annexation of the King County annexation areas effective February 28, 2014, the study service area was roughly equivalent to the King County portion of the existing City limits. Exceptions to this generalization occur in an area near 132nd Avenue NE and NE 187`" Place within the City of Woodinville that is served by the City of Bothell, and an area in Snohomish County within the AWWD boundary that is served by the City. Prior to the 2014 King County annexation, the existing population is assumed to be equivalent to the King County portion of the city limits with the addition of approximately 850 parcels which account for the portions of the service area in Snohomish County and City of Woodinville. After the 2014 annexation, the parcels within the City limits but outside the sewer service area are subtracted from the King County population numbers. Census data indicates a population of 17,090 within the King County Portion of the City limits in 2010. Accounting for the portions of the service area in Snohomish County and 2-8 City of Bothell March 2018 Wastewater System Comprehensive Plan Update [A Gray & Osborne, Inc., Consulting Engineers the City of Woodinville, the 2010 population in the sewer service area is estimated to be 17,928. Employee population is taken from the City of Bothell 2012 Water System Comprehensive Plan. Table 2-2 presents the City's historical sewer service connections for the past 5 years. Based on this historical growth, the City has averaged approximately 1.7 percent growth annually. TABLE 2-2 Historical Growth of Sewer Service Connections Year Connections Per Year Total Connections Percent Annual Growth(l) 2012 -- 5,123 N/A 2013 93 5,216 1.8 2014 166 5,382 3.2 2015 33 1 5,415 0.6 2016 1 69 5,487 1.3 Average Annual Growth 1.7 (1) Annual growth in sewer connections from previous year. Projected Population The City has developed 20 -year population projections for the City based on future land use and historical growth rates. The City's projected population for 2036 within the incorporated King County portion of the City, and the sewer service area, is 27,121 for residential population, and 15,198 for employee population. Employee population includes the student, staff, and faculty population of the University of Washington Cascadia Campus. Growth has been extrapolated from 2015 to 2036 to represent population projections for the 20 -year planning period based on the Washington State Office of Financial Management 2015 Population Trends and 2035 population and employment targets from City of Bothell's 2015 Imagine Bothell Comprehensive Plan. The study area includes one high school, three public elementary schools, two private elementary schools, and one private high school. The estimated student population of these schools for the 2015-2016 school year is approximately 5,000. The City residential population growth rate is applied to the existing school population to estimate future school populations. City of Bothell 2-9 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers Population projects for the City are shown in Table 2-3. TABLE 2-3 Study Area Population Projections Year Service Area Residential Population Service Area Employee Population (4) Service Area School Population (5) 2010 17,928() 11,625 4,805 2011 17,988(2) 11,693 4,677 2012 18,118(2) 11,773 5,080 2013 18,278(2) 11,852 5,198 2014 21,176(2) 11,932 5,186 2015 21,933(2) 12,011 5,000 2016 22,155(3) 12,146 5,051 2017 22,381(3) 12,283 5,102 2018 22,608(3) 12,422 5,154 2019 22,838(3) 12,562 5,206 2020 23,070(3) 12,703 5,259 2021 23,304(3) 12,846 5,313 2022 23,541(3) 12,991 5,367 2023 23,780(3) 13,138 5,421 2024 24,022(3) 13,286 5,476 2025 24,266(3) 13,436 5,532 2026 24,513(3) 13,587 5,588 2027 24,762(3) 13,740 5,645 2028 25,014(3) 13,895 5,702 2029 25,268(3) 14,052 5,760 2030 25,525(3) 14,210 5,819 2031 25,784(3) 14,370 5,878 2032 26,046(3) 14,532 5,938 2033 26,311(3) 14,696 5,998 2034 26,578(3) 14,861 6,059 2035 26,848(3) 15,029 6,121 2036 27,121(3) 15,198 6,183 Buildout 36,055 1 20,801 8,206 (1) Estimated from 2010 Census data. (2) Estimated from the Washington State Office of Financial Management 2015 Population Trends. (3) Interpolated from 2010 Census data and 2035 information from the 2015 Imagine Bothell Comprehensive Plan. (4) Employee population includes student, staff, and faculty populations at the UW/Cascadia Campus. (5) School populations estimated based on actual enrollment for 2015-2016 plus populations for area private schools from Washington State Office of Superintendent of Public Instruction. School populations are projected at the same rate as residential population. 2-10 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers As a comparison, the number of sewer connections for each year from 2012 through 2016 is presented in Table 2-2. Based on the increase in sewer connections, the City's annual growth rate from 2012 to 2016 was 1.7 percent. The projected growth rate for the King County portion of the City from the Washington State Office of Financial Management is 1.0 percent for residential population and 1.1 percent for employee population. City of Bothell 2-11 Wastewater System Comprehensive Plan Update March 2018 CHAPTER 3 REGULATORY REQUIREMENTS INTRODUCTION Wastewater collection system planning includes an analysis of the City's ability to comply with the applicable regulatory requirements while providing a high level of service for existing and future customers. These requirements are outlined in federal, state, and local regulations, and enforced by a number of agencies. This chapter presents the various legislation, regulations, permits, agencies, and design standards that may affect City wastewater collection operations. The discussion presented here is general in nature; specific issues will be addressed as they occur within the context of following chapters. LEGISLATION, REGULATIONS, AND PERMITS In this section, the various state and federal legislation that may affect City operations are discussed, as well as other relative permits, programs, and regulations. Table 3-1 provides a list of state and federal regulations that may apply to the City. TABLE 3-1 Existing Wastewater Regulations(') Regulation Action Required by City? Phase I National Pollutant Discharge Permits: • Municipal/industrial point source discharges No • Industrial stormwater discharges Yes • Separated storm sewers 100,000 or more No • Construction sites 5 acres or greater Yes Phase II National Pollutant Discharge Permits: • Municipal discharges 10,000 or more Yes • Municipal discharges 10,000 or less Yes • Construction sites 1 acre or greater Yes CSO Control Policy Strategy Yes National Pretreatment Program Yes Section 401 Water Quality Certification Yes Section 404 Wetland Modification Permit Yes EPA Capacity, Management, Operation and Maintenance No Endangered Species Act Yes Reclaimed Water Standards Yes National Environmental Policy Act Yes Federal Clean Air Act No City of Bothell 3-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 3-1 — (continued) Existing Wastewater Regulations(l) Regulation Action Required by City? State Water Pollution Control Act No State Environmental Policy Act Yes Growth Management Act Yes Shoreline Management Act Permit Yes Floodplain Development Permit Yes Hydraulic Project Approval Yes Local Right -of -Use Permit Yes (1) Wastewater regulations as of February 2018. FEDERAL CLEAN WATER ACT The Federal Water Pollution Control Act is the principal law regulating the water quality of the nation's waterways. Though originally enacted in 1948, it was significantly revised in 1972 and 1977, when it was commonly titled the "Clean Water Act" (CWA). The CWA has been amended several times since 1977. The 1987 amendments replaced the Construction Grants program with the State Revolving Fund (SRF) which provides low-cost loans for a range of water quality infrastructure projects. The National Pollutant Discharge Elimination System (NPDES) is established by Section 402 of the CWA and subsequent amendments. The Washington State Department of Ecology (Ecology) administers NPDES permits under the authority of the United States Environmental Protection Agency (EPA). Most NPDES permits are valid for five years and place limits on the quantity and quality of pollutants that may be discharged. NPDES permits granted under Phase I of the CWA regulate point source discharges including wastewater discharges to surface waters from municipal or industrial wastewater treatment facilities, stormwater discharges from industrial facilities, construction sites of more than five acres, and stormwater discharges from separate storm sewers serving populations of more than 100,000. Under Phase lI rules, promulgated by EPA in March of 1999, NPDES permits are required for surface water discharges from construction sites greater than one acre, municipalities of 10,000 or more, and communities smaller than 10,000 with urban characteristics. The 1985 enactment of the Revised Code of Washington (RCW) 90.48.480 and Washington State Administrative Code (WAC) 173-245 required all municipalities with combined sewer overflows (CSOs) to develop a plan to reduce annual CSOs to one event per year. The National CSO Control Strategy (1989, Federal Register 37370) officially classified combined sewer overflows as point source discharges subject to regulation under NPDES and CWA. In 1994, EPA published a CSO Control Policy Strategy (Federal Register 18688) that limits CSOs to four to six events per year depending on the sensitivity of the receiving water. 3-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers Section 307 of the CWA established the National Pretreatment Program. This program is designed to protect publicly owned treatment facilities and limits the amount of industrial or other non-residential pollutant discharged to municipal sewer systems. Since the City does not discharge wastewater, it is not required to obtain an NPDES permit under the CWA, with the possible exception of surface water discharges from City construction project sites greater than one acre. The City may also be affected by pretreatment requirements of King County Department of Natural Resources' NPDES permit as well as increased costs associated with treatment requirements imposed by future permits. Although the City is currently not required to obtain an NPDES permit, new regulations issued by EPA are anticipated under the Capacity Management Operation, and Maintenance (CMOM) amendments to the NPDES permit process that could impact agencies that manage collection systems. CMOM is specifically addressed in a later section in this chapter. A 401 Water Quality Certification is required under the CWA for any activity that may result in discharge to surface waters including excavation activities that occur in streams, wetlands, or other waters of the United States. Section 404 of the CWA regulates discharges of fill or dredged materials in wetlands, including any related draining, flooding, and excavation. Pipeline and lift station projects in wetlands will require a Section 404 permit, National Environmental Policy Act (NEPA) documentation (generally provided by the Corps of Engineers), Endangered Species Act consultation, and National Historic Preservation Act (NHPA) consultation with the Washington State Department of Archaeology & Historic Preservation in addition to any related local permits. Activities that impact more than one-third of an acre will also require a Section 401 Certification. CAPACITY, MANAGEMENT OPERATION AND MAINTENANCE The Environmental Protection Agency (EPA) has drafted an amendment to the NPDES regulations to address Sanitary Sewer Overflows (SSOs). The legal basis for this Capacity, Management Operation and Maintenance (CMOM) regulation is that nearly all collection systems have unplanned releases at some time and that these releases must be regulated under the jurisdiction of the Clean Water Act. The EPA currently has not set a timetable for CMOM implementation. ENDANGERED SPECIES ACT The 1973 Endangered Species Act (ESA) "provide(s) a means whereby the ecosystems upon which endangered and threatened species depend may be conserved..." The ESA authorizes the US Fish and Wildlife Service (USFWS) and the National Marine Fisheries Service (NMFS) to list species as endangered or threatened and to identify and designate the critical habitat of listed species. USFWS has jurisdiction over all terrestrial and City of Bothell 3-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers freshwater plants and animals, while NMFS is responsible for the protection of all marine species. ESA listings significantly impact activities that may affect salmon and trout habitat, such as water use, land use, construction activities, and wastewater treatment and disposal. Impacts of ESA regulations include longer timelines for permitting processes and more stringent regulation of construction impacts and development. It is illegal for the government or individuals to "take" a listed species. "Take" is interpreted by the federal courts to include, "significant modification or degradation of critical habitat" that impairs essential behavior patterns. Section 4(d) of the ESA directs the Services to issue regulations to conserve species listed as threatened. This applies particularly to "take," which can include any act that kills or injures fish, and may include habitat modification. The ESA prohibits my take of endangered species, but some take of threatened species that does not interfere with salmon survival and recovery can be allowed. City activities will need to comply with any future provisions of the Section 4(d) rule, as well as revised critical areas ordinances adopted by local governments served by the City. NATIONAL ENVIRONMENTAL POLICY ACT The National Environmental Policy Act was established in 1969 and requires federal agencies to determine environmental impacts on all projects requiring federal permits or funding. If the project is determined to be environmentally insignificant a Finding of No Significant Impact (FONSI) is issued, otherwise an Environmental Impact Statement (EIS) is required. It is not anticipated that City activities will fall under the National Environmental Policy Act. FEDERAL CLEAN AIR ACT The Federal Clean Air Act requires all wastewater facilities to plan to meet the air quality needs of the region. The permitting of facilities is based upon a mass balance being performed to review if a facility is required to seek an air permit from a federal and/or local permitting agency. At this time, it is not anticipated that the current or future facilities would require a federal permit since only large wastewater treatment facilities are required to have permits. Puget Sound Clean Air Agency is the regional air quality authority, which does not require a permit for the construction and operation of collection system facilities. Puget Sound Clean Air Agency is the air authority for King, Pierce, and Snohomish Counties. STATE WATER POLLUTION CONTROL ACT The intent of the state Water Pollution Control Act is to "...maintain the highest possible control standards to ensure the purity of all waters of the state consistent with public 3-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers health and the enjoyment... the propagation and protection of wildlife, birds, game, fish and other aquatic life, and the industrial development of the state." Under the RCW 90.48 and the WAC 173-240, Ecology issues permits for wastewater treatment facilities and also land application of wastewater under WAC 246-271. STATE ENVIRONMENTAL POLICY ACT The WAC 173-240-050 requires a statement in all wastewater comprehensive plans regarding proposed projects in compliance with the State Environmental Policy Act (SEPA), if applicable. The capital improvements proposed in this plan will fall under SEPA regulations. A non -project SEPA checklist is included in Appendix B of this report to comply with the requirements of SEPA. In most cases a Determination of Non -Significance is issued; however, if a project will have a probable significant adverse environmental impact an Environmental Impact Statement will be required. Utility lines 8 inches in diameter or smaller are categorically exempt from SEPA review; however, the City may wish to prepare a SEPA review for construction projects in environmentally sensitive areas. GROWTH MANAGEMENT ACT The Washington State Growth Management Act (GMA) was enacted in 1990 and requires certain local governments to plan for the population growth that will occur over the next 20 years within an established Urban Growth Area. The GMA also requires cities and the county to classify critical areas (wetlands, aquifer recharge areas, fish and wildlife habitat areas, geologically hazardous areas, and frequently flooded areas) and to establish development regulations to protect these areas. SHORELINE MANAGEMENT ACT PERMIT A Shoreline Permit is required on all projects that cost $2,500 or more that are located on the water or within a shoreline area. Shorelines are defined by lakes or reservoirs of 20 acres or greater, streams with a mean annual flow of 20 cubic feet per second or greater, marine waters, and an area inland 200 feet from the ordinary high water mark. Within the City, North Creek and the Sammamish River have Shoreline Management Act requirements associated with development within 200 feet. FLOODPLAIN DEVELOPMENT PERMIT Local governments that are participating in the National Flood Insurance Program are required to review projects (including wastewater collection facilities) in a mapped flood plain and impose conditions to reduce potential flood damage from flood water. A Floodplain Development Permit is required prior to construction. Areas where a Floodplain Development Permit may be required include the flood hazard areas shown in Figure 2-6, Site Sensitive Areas. Floodplain areas are located within the City along North Creek and the Sammamish River. City of Bothell 3-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers HYDRAULIC PROJECT APPROVAL Under the Washington State Hydraulic Code (WAC 220-110), the Washington State Department of Fish and Wildlife requires a Hydraulic Project Approval for activities that will "use, divert, obstruct, or change the natural flow or bed" of any waters of the state. For City activities such as pipeline crossings of streams, a Hydraulic Project Approval will be required, and must include provisions necessary to minimize project specific and cumulative impacts to fish. Because of ESA listings throughout Washington, the Washington State Department of Fish and Wildlife and NMFS are in the process of revising the Hydraulic Code to protect species listed as threatened or endangered. If NMFS determines that the revisions are sufficient to protect listed species, the State hopes the revised code will constitute an acceptable Habitat Conservation Plan under Section 10 of the ESA. If the acceptable Habitat Conservation Plan is approved, NMFS issues an Incidental Take Permit allowing incidental take of a listed species if the permittee has complied with the Habitat Conservation Plan. This Incidental Take Permit expires after an agreed upon period of time, and may then be revised by NMFS. LOCAL PERMITS The City has the power to issue right-of-way permits to allow construction and maintenance of facilities in their respective right of ways. The City specifies construction standards such as traffic control, work hours, and safety issues, as well as design and restoration standards for facilities constructed within City right-of-way. REGULATORY AGENCIES The above regulations, permits, and programs are administered by various local, state, and federal agencies. The history, purpose, and authority of these agencies are discussed below. United States Environmental Protection Agency The stated mission of the EPA is to protect human health and to safeguard the natural environment upon which life depends. EPA's purpose includes protecting all Americans from significant human health risks, ensuring that national environmental efforts are based on the best available scientific information, ensuring that federal laws are enforced fairly, and that environmental protection contributes to making our communities and ecosystems diverse, sustainable, and economically productive. The Washington Department of Ecology (Ecology) currently administers NPDES permits and SRF loans on behalf of the EPA. United States Fish and Wildlife Service. 3-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers Under the ESA, USFWS is responsible for the protection of all non -marine life such as Bull Trout. Though USFWS may choose to invoke the blanket prohibitions of Section 9, the "threatened" status of Bull Trout allows more flexibility to establish regulations designed to protect these species. These regulations, known collectively as the Section 4(d) rule, outline activities likely to result in a "take" of a threatened species, as well as exempted activities. National Marine Fisheries Service Under the ESA, NMFS is responsible for the protection of marine life, including anadromous salmon such as the Puget Sound Chinook. When a species is listed as "endangered" the prohibitions against "take" of the species are immediate under Section 9 of the ESA. Though NMFS may choose to invoke the blanket prohibitions of Section 9, the "threatened" status of the Puget Sound Chinook allows more flexibility to establish regulations designed to protect these species. These regulations, known collectively as the Section 4(d) rule, outline activities likely to result in a "take" of a threatened species, as well as exempted activities. United States Army Corps of Engineers Under the CWA, the US Army Corps of Engineers (Corps) is authorized to regulate discharge of fill and dredged material to waters of the United States, including wetlands. The Corps employs a system of General or Nationwide Permits for blanket authorization of activities, such as utility lines that have minimal adverse impact on the environment. In situations where adverse impact is probable, the Corps may issue an Individual Permit after reviewing an analysis of alternatives. Enforcement actions may be brought by the Corps or the EPA. Washington State Department of Ecology The mission of Ecology's Water Quality Program is to protect, preserve, and enhance surface and ground water quality and to promote the wise management of water for the benefit of current and future generations. Ecology performs various functions under state and federal authority and has both local and regional offices. Ecology is also responsible for awarding low-interest loans for pollution control projects through the SRF, and low interest loans and grants through the Centennial Clean Water Fund. Ecology issues permits under the State Water Pollution Control Act, Section 401 Water Quality Certification, and NPDES permits in compliance with the CWA under EPA authority. Ecology also reviews and approves plans for on-site systems exceeding 14,500 gallons per day (gpd), all systems receiving state or federal construction grants under the CWA, and systems using mechanical treatment or lagoons with ultimate design flows above 3,500 gpd. Ecology regulates discharge of waste to the state's groundwater, discharge of industrial or commercial waste to sewers, and the use of reclaimed water through the State Waste Discharge permit program. Ecology's regional offices issue City of Bothell 3-7 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers Temporary Modification of Water Quality Criteria Permits for construction near or in water that might cause short-term water quality violations. Washington State Department of Fish and Wildlife Under WAC 220-110 and RCW 75.20, any form of work that uses, diverts, obstructs, or changes the natural flow or bed of any fresh water of the state requires hydraulic project approval from the Department of Fish and Wildlife. Approval would be required for all City construction projects that cross or otherwise take place in streams or shorelines. State and Local Health Departments The Washington State Department of Health (DOH) was formed in 1989 and is the primary state agency responsible for reserving public health. DOH issues Waste Discharge Permits for reclaimed water use in conjunction with Ecology and approves onsite wastewater disposal systems between 3,500 and 14,500 gpd. The King County Health District and the Snohomish Health District are the local health department governing the City. In general, local health departments may adopt and enforce local regulation when they are consistent with or more stringent than state regulations. The local health departments have approval authority for onsite systems with design flows of up to 3,500 gpd. CITY AND COUNTY PLANNING POLICIES Wastewater utility planning policies should be consistent with City, King, and Snohomish County planning policies. Accordingly, adoption of this Plan will require approval by the City as well as King and Snohomish County. DESIGN, CONSTRUCTION, OPERATION, AND MAINTENANCE STANDARDS In 1998, Ecology updated its Criteria for Wastewater Works Design. It serves as a guide for the design of wastewater collection, treatment, and reclamation systems. This criteria provides a basis for the design of collection and treatment systems as well as to aid regulating agencies in their determination of whether an approval, permit, or certificate should be issued. All wastewater facilities must meet Ecology, local, and City design standards. The City's design standards are included in Appendix C. PRETREATMENT REQUIREMENTS Industrial and some commercial dischargers to the City of Bothell collection system are subject to local (King County) and national (40 Code of Federal Register, Part 403) pretreatment standards. Industrial or commercial development can have a considerable impact on the sanitary sewer collection system immediately downstream of the facility. 3.8 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers Industrial waste can contain high concentrations of chemicals that can make the waste highly corrosive or toxic. King County's regulations ("local limits") include restrictions on discharge pH, flammable or explosive materials, fats, oils and greases (FOG), heavy metals and cyanide, temperature, hydrogen sulfide, organic compounds, and settleable solids. The authorization to discharge industrial wastewater comes in the form of a discharge authorization or waste discharge permit issued by King County's Industrial Waste (KCIW) Program. The KCIW Program is a state delegated authority to implement the Federal Pretreatment Program in the King County tributary systems like Bothell. This program administers the waste discharge permits, inspections, enforcements, compliance and collection of surcharge monitoring fees. The program also works with business to help them implement pollution prevention practices. The industrial dischargers submit monthly self monitoring reports to the King County Industrial Waste Program to confirm compliance with their NPDES permits. Additionally, King County conducts twice yearly monitoring of the discharges. Although Bothell does not have a large proportion of industrial dischargers relative to other communities, it is important that industrial discharges be identified, characterized, and, if necessary, controlled. Dischargers that discharge wastewater with excessive levels of pollutants may be required to implement pretreatment if it is determined that such discharges would otherwise exceed standards or adversely affect human health, the environment, or wastewater conveyance or treatment efficacy. Implementation of a pretreatment and FOG program can assist the City enforcing standards that ensure the integrity of its collection system and prevents sanitary sewer overflows. Although requirements and implementation varies from community to community, King County may require companies discharging polar FOG to complete a FOG control plan. The goal of the FOG control plan is to implement reasonable and technically feasible controls of free-floating polar FOG. The basic components of the FOG control plan should include: A written policy articulating management and corporate support for the plan and a commitment to implement planned activities and achieve established goals. 2. A description of the facility type and a summary of the products made and/or service provided. 3. Quantities of FOG brought into the facility as raw product, amounts contained in products, and quantities discharged to the sewer. 4. Schematics of process areas illustrating drains and discharge points connected to the sewer. 5. A description of current reduction, recycling, and treatment activities. City of Bothell 3-9 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers 6. Identification of a full range of potentially feasible reduction opportunities. 7. A description of the reduction or control opportunities selected for implementation, process(es) affected, and estimated reductions to be achieved. Specific performance goals and implementation schedule. GRAVITY SYSTEM Ecology's design criteria requires that gravity systems be designed large enough to carry peak hourly flows, as well as steep enough to provide a minimum scouring velocity of 2 feet per second when flowing full. The City also has minimum standards for manhole construction and details specifying trench configuration, depth of cover, bedding materials, and road overlays that meet or exceed Ecology's standards. The current City design standards for gravity systems are consistent with those of Ecology. LIFT STATIONS Lift stations and force mains must also be designed according to Ecology guidelines. The City has design standards that meet or exceed current Ecology standards. The City operates submersible, wet well/dry well and wet well mounted styles of stations. The City has standards for pump controls and telemetry. The current City design standards for lift stations are consistent with those of Ecology. ON-SITE SEPTIC SYSTEMS In some cases, wastewater may be treated and disposed of on-site either by individual septic systems or community on-site systems. Municipalities, such as cities and counties, are required under the GMA to eventually provide wastewater collection services to all residents of the Urban Growth Area that are currently not connected. The City is planning for service to all areas within its sewer boundary whether or not the area is currently sewered or incorporated. Service to areas currently on septic systems will be by developer extension. RECLAIMED WATER STANDARDS "Reclaimed water" is defined in RCW 90.46.010 as "water derived in any part from wastewater with a domestic wastewater component that has been adequately and reliably treated, so that it can be used for beneficial purposes. Reclaimed water is not considered a wastewater." Use of reclaimed water is an alternative to effluent disposal. In the State of Washington, any type of direct beneficial reuse of municipal wastewater is defined as water reuse or reclamation. Water Reuse and Reclamation Standards have been issued jointly by the Departments of Health and Ecology. WAC 173-219, Reclaimed Water, 3-10 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers effective February 23, 2018, implements RCW 90.46, reclaimed water use and establishes requirements for production, distribution and use of reclaimed water. King County Department of Natural Resources (KCDNR) produces Class A reclaimed water at the Brightwater Wastewater Treatment Facility (WWTF). Class A reclaimed water treatment consists of a side stream off the membrane bioreactor and disinfection; the reclaimed water is treated separately from the WWTF effluent to be disposed of via the outfall to Puget Sound. A dedicated 27 -inch pipeline from the WWTF site in Snohomish County conveys up to 21 mgd of reclaimed water (Brightwater Facility Plan, May 2005). The reclaimed water will be conveyed to three main distribution points via: • A 27 -inch pipeline from the Brightwater WWTF site to the North Creek Portal. • A 20 -inch pipeline from the North Creek Portal to the North Kenmore Portal. Two 14 -inch pipelines from the North Kenmore Portal to the Ballinger Way Portal. The reclaimed water service areas, pipeline alignment and distribution portals are displayed on Figure 3-1. At each of these portals, the reclaimed water is brought to the surface for distribution. The North Creek Portal and North Creek Pump Station are located within the City Study Area in the North Creek Parkway business parks. PERMITTED USES OF RECLAIMED MUNICIPAL WASTEWATER Allowable water reuse methods of Class A reclaimed water include: Irrigation of Non -Food Crops • Spray Irrigation of Food Crops. • Surface Irrigation • Food crops where there is no reclaimed water contact with edible portion of crop. • Root crops. • Orchards and vineyards. • Food crops that undergo physical or chemical processing sufficient to destroy all pathogenic agents. City of Bothell 3-11 Wastewater System Comprehensive Plan Update March 2018 Cray & Osborne, Inc., Consulting Engineers • Landscape Irrigation • Restricted access areas (e.g., cemeteries, freeway landscaping). • Open access areas (e.g., golf courses, parks, playgrounds, etc.). • Impoundments • Landscape impoundments. • Restricted recreational impoundments. • Non -restricted recreational impoundments. • Fish Hatchery Basins • Decorative Fountains • Flushing of Sanitary Sewers • Street Cleaning • Street sweeping, brush dampening. • Street washing, spray. • Washing of corporation yards, lots, and sidewalks. • Dust Control (Dampening Unpaved Roads, Other Surfaces) • Dampening of Soil for Compaction (Construction, Landfills, etc.) • Water Jetting for Consolidation of Backfill Around Pipelines • Fire Fighting and Protection • Dumping from aircraft. • Hydrants or sprinkler systems in buildings. • Toilet and Urinal Flushing • Washing Aggregate and Making Concrete • Industrial Boiler Feed • Industrial Cooling • Industrial Process 3-12 City of Bothell March 2018 Wastewater System Comprehensive Plan Update §.:. ... � § LU § u Lu§, 2 ) j \ _ o �® §k j\ \)< _ �� L �k So ») $!(: 6: o �E <w §- (� §'s w W(�aM� ��\ CO CO � §q� /n � _§ 3°® ... .. 0 . . \ § 2 . � . -) (§ < »( ee0 « < / §§ ƒf §a .\( UJj ® ¢ § ` ) 2 «6 \ / ©- B » 42 ( .�� - ! . � 2 . � u ol >: Gray & Osborne, Inc., Consulting Engineers With access to reclaimed water within the North Creek Parkway business and industrial park, many of these uses are feasible for the City. Irrigation uses would be seasonal, but industrial applications can be applied year-round. Two other reuse methods that offer the potential for 100 percent reuse on a year-round basis are groundwater recharge and stream flow augmentation. A more detailed discussion of groundwater recharge and stream flow augmentation is provided. Groundwater Recharge Groundwater recharge using reclaimed water is permitted under the water reuse standards. Three categories of groundwater recharge are covered in the water reuse standards: Direct injection to a drinking water aquifer. Direct injection to a non -drinking water aquifer. Surface percolation. Since the City does not rely on groundwater as a source of supply, direct injection of reclaimed water to a drinking water aquifer is not discussed in detail. Direct injection of reclaimed water to a non -drinking water aquifer must be Class A reclaimed water treatment standards as well as the following additional criteria: BODS _< 5 mg/L TSS < 5 mg/L Any additional criteria deemed necessary by DOH or Ecology Groundwater recharge using surface percolation must be at least Class A reclaimed water. In addition to secondary treatment to provide oxidized wastewater, the process must include a "step to reduce nitrogen prior to final discharge to groundwater." Treatment of the Class A reclaimed water will be done at the Brightwater WWTF site in Snohomish County. Reclaimed water treatment consists of advanced secondary treatment with a membrane bioreactor, which combines activated sludge secondary treatment and a microfiltration membrane. The MBR system is designed for complete nitrification. Streamflow Augmentation For small streams where fish habitat has been degraded due to low instream flows, stream flow augmentation is an alternative that is allowed under the water reuse regulations and standards. This reuse method requires an NPDES permit and adherence to the surface water quality standards (WAC 173-201 A). However, the key difference between stream flow augmentation and surface water disposal is that a determination of beneficial use has been established based on a need to increase flows to the stream. To make this determination requires concurrence from WDFW that the need exists for additional instream flows. City of Bothell 3-13 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers Other Uses The water reuse standards allow for a number of other uses that are not discussed in detail here. However, the general basis for the reuse criteria is that when unlimited public access to the reclaimed water is involved, the criteria requires Class A reclaimed water. The use of reclaimed water for agricultural purposes is allowed under the water reuse standards, including food crops, as proper setback distances are employed. These setback distances are discussed in the next section. REUSE AREA REQUIREMENTS The water reuse standards establish criteria for siting and identifying water reclamation projects and their facilities. Water reclamation storage facilities, valves, and piping must be clearly labeled, and no cross -connections between potable water and reclaimed water lines are allowed. A key area requirement for a water reclamation project is setback distance. Table 3-2 summarizes setback requirements for water reclamation facilities. TABLE 3-2 Setback Distances for Class A Reclaimed Water in the State of Washington Reclaimed Water Use/Facility Distance Feet Minimum Distance to Potable Water Well: Spray or Surface Irrigation 50 Unlined Storage Pond or Impoundment 500 Lined Storage Pond or Impoundment 100 Pipeline 50 Minimum Distance between Irrigation Area and Public Areas 0 KCDNR BRIGHTWATER WWTF AND RECLAIMED WATER PLAN King County Department of Natural Resources (KCDNR) has identified general areas in King County for the potential use of reclaimed water. Thus far, however, contracts have not been established between the distributor and the end user and the reclaimed water facility is still in the planning stages. KCDNR has primarily identified areas with high irrigation needs that could potentially use reclaimed water to substitute for potable quality water supply, including schools, athletic fields, public parks, and golf courses. KCDNR has divided the potential reclaimed water service area into an East Segment and two West Segments served by the different distribution portals. The potential reclaimed water service areas are identified on Figure 3-1. The City primarily lies within the East Segment and West Segment and would be served by the North Creek Portal. 3-14 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers The peak day reclaimed water demand for the total potential reclaimed water service area within King County is projected to be 21 mgd. Table 3-3 presents the projected peak day reclaimed water demand for the east and west segments and corresponding portal service areas. TABLE 3-3 KCDNR Projected Peak Day Reclaimed Water Demand East Segment Influent Pump Station 0.8 mgd North Creek Portal Service Area 8.2 mgd West Segment North Kenmore Portal Service Area 4.5 mgd Ballinger Way Portal Service Area 7.5 mgd Total East and West Segment 21 mgd Source: Brlghtwater Facility Plan, Appendix J, May 2005. The potential peak day demand for the North Creek Portal Service Area identified by KCDNR is 8.2 mgd. POTENTIAL FOR IRRIGATION WATER REUSE Reclaimed water could be used for irrigation and landscape purposes. The City has an annual average rainfall of approximately 38 inches. Due to the significant amount of rainfall during winter months, reclaimed water could be used for irrigation only during the summer. Many of the parks within the City are irrigated, including several athletic and play fields at schools and the public parks. Privately owned business that potentially could use reclaimed water have also been identified. The North Creek Parkway business and industrial park irrigates green space and also has several athletic play fields that could benefit from reclaimed water irrigation. Additional business with irrigation needs in the downtown area could also use reclaimed water for irrigation. The City will study potential irrigation use sites in the upcoming feasibility study. POTENTIAL FOR INDUSTRIAL WATER REUSE In addition to irrigation, industries within the City that might have a use for reclaimed water have been investigated. These include the significant industrial water users of the City, many with cooling systems. The City's top consumers will be targeted for both industrial and irrigation uses for reclaimed water. Specific customers will be identified in the feasibility study. City of Bothell 3-15 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers FLUSHING OF SANITARY SEWER LINES One possible application of reclaimed water by the City could be to flush (clean) the sanitary sewer lines. Water may be obtained from the North Creek Portal to facilitate flushing until additional distribution lines are installed. RECLAIMED WATER CONCLUSION The City is currently studying the economic feasibility of utilizing reclaimed water within the water retail service area and throughout the City. Reclaimed water from Brightwater is available at the North Creek Portal within the study area. The City anticipates at least minimal usage of reclaimed water and subsequent water use efficiency savings and reduction in annual production. 3-16 City of Bothell March 2018 Wastewater System Comprehensive Plan Update CHAPTER 4 SYSTEM DESIGN CRITERIA INTRODUCTION Adequate design of the City's wastewater conveyance facilities requires the determination of the quantity of wastewater from contributing sources. The City's wastewater is predominantly domestic in origin, with lesser amounts contributed by commercial and industrial businesses and by public use facilities, such as schools, parks, hospitals, and municipal functions. Infiltration and inflow contributions results from groundwater and surface water entering the sewer system during periods of rainfall or as a result of high groundwater levels. Data from previous years are used to estimate unit quantities for critical parameters related to population, land use and overall land area in the existing service area. These unit quantities are then applied to the projected future population, comprehensive land use and the future land area to be served to determine the design criteria for selecting and sizing various components required to serve the study area in future years. DEFINITION OF TERMS In this Chapter, wastewater characteristics for the existing service area are analyzed and projections made for future conditions. The terms and abbreviations used in the analysis are described as follows: WASTEWATER Wastewater is defined as wastes carried by water from residential, business and public use facilities, together with quantities of groundwater and surface water which enter the sewer system through defective piping and direct surface water inlets. The total wastewater flow is quantitatively expressed in millions of gallons per day (mgd) or in gallons per minute (gpm). DOMESTIC WASTEWATER Domestic wastewater is generated by single and multi -family residences. Domestic wastewater flow is generally expressed as a unit flow based on the average contribution from each person per day. The unit quantity is expressed in terms of gallons per capita per day (gpcd). City of Bothell 4-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers INFILTRATION Infiltration is defined as groundwater that enters a sewer system by means of defective pipes, pipe joints, or manhole walls. Infiltration quantities generally exhibit seasonal variation in response to groundwater levels. Storm events can typically trigger a rise in groundwater levels and an increase in infiltration flows. The highest infiltration flows are observed following significant storm events or following prolonged periods of precipitation. Since infiltration is related to the total amount of piping and appurtenances in the ground and not to any specified water use component, it is generally expressed in terms of the total land area being served or in terms of the lengths and diameters of sewer pipe. The unit quantity used in this study is gallons per acre per day (gpad). INFLOW Inflow is surface water that enters the sewer system from yard, roof and footing drains, from cross -connections with storm drains, and through holes in manhole covers. Peak inflow can occur during heavy storm events when storm sewer systems are surcharged, resulting in hydraulic backups and local ponding. Inflow is expressed in terms of gallons per acre per day (gpad). AVERAGE DRY WEATHER FLOW (ADWF) Average dry weather flows consists of wastewater that flows during periods when the groundwater table is low and the precipitation is at its lowest of the year. The dry weather flow period normally occurs from June to September. The average dry weather flow is taken to be the average daily flow during the three lowest consecutive flow months of the year. PEAK DOMESTIC FLOW Peak domestic flow is wastewater from domestic sources during the peak hour of a day. Peak domestic flow is an estimate of the domestic wastewater produced by the simultaneous discharge to the sewer system by the entire population of a drainage basin. A peaking factor is determined by taking the ratio of the peak hour flow to the average day flow. MAXIMUM WINTER MONTH FLOW Maximum winter month flow is the average daily flow during the highest flow month of the year. This flow is composed of the normal domestic flow with contributions to the sewer system from infiltration and inflow. Maximum Winter Month Flow is typically used in the agreements for purchased capacity in wastewater treatment facilities. The City does not have any maximum winter month flow requirements in its agreement with KCDNR. A copy of the agreement with KCDNR is located in Appendix A. 4-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers PEAK WET WEATHER FLOW (PWWF) The peak hour wastewater flow is the highest wet weather flow during the day. This flow includes contributions to the sewer system from infiltration and inflow and from peak domestic discharge. Peak Wet Weather Flows are used in sizing and evaluating the hydraulic capacity of conveyance and pumping components of a wastewater collection system. WASTEWATER FLOW DESIGN CRITERIA To properly design the City's sanitary sewer facilities, it is necessary to determine the unit quantities for each of the major components that constitute the volume of sewage flows. The two unit quantities to be identified are domestic wastewater and infiltration and inflow. The domestic wastewater unit is generally expressed as gallons per capita per day (gpcd). Estimates of sewage flows for the study area and individual drainage basins requires the application of the unit flow design criteria to the size of the contributing area, the comprehensive land use for the contributing area, and the projected population to be served within the contributing area. AVERAGE DOMESTIC FLOW Winter water consumption records are used to develop existing and future average domestic and commercial sewer flow values. To negate the effect of irrigation water use, which is water that generally does not enter the sewer system, water consumption records are utilized during the winter period to estimate the amount of water that is generally discharged to the sewer system. The City's records for February 2010 through January 2016 are used to determine residential and employee per capita winter water consumption. For each month, the water consumed in mgd, the number of customers served, and the estimated population served are used to calculate per capita water usage. The calculated values are presented in Table 4-1. Residential water consumption is defined by the City's historical records for water system connections in the residential, apartments, mobile homes, and duplex customer classes. Water system residential population is based on the water system population defined in Table 2-17 in the Water System Comprehensive Plan. Commercial water consumption is defined by the City's historical records for water system connections in the commercial and the government/schools customer classes. Employee population is based on 34.4 employees per connection, which is derived from the City's 2010 estimated employee population of 11,625 and 337 commercial and government/schools accounts. The remaining employee population is calculated based on 34.4 employees per connection and the City's historical records for commercial and government/schools accounts. City of Bothell 4-3 Wastewater System Comprehensive Plan Update March 2018 �I Y ob Q L Ca a ° cts s 0 �� ?� U O E 0 y O y U v>i c0i �o..� 0 0 tea, ca v y C h w O o � � � O p y C V O N 00 N N N DO N lI1 N til). . N N N N kn cn N N M M o0 N U> bo�n �• U V � Ca "TJ E is r O y • O Q R cz cLa ti K ESU "iYs O E °' U gE a� s aUa 7 > a o.� �o 3 0 a o o o Y U .Y O y`r, is 0 U O W U O i O O E K w 0 .y O 0 .aE�=aUo"o �U "oo— E 0 ca q0 L N Q L C C ON 1,0 O\ N N o >,o,E d• ON O-, 00 M N ^kn N kn to kn N to N o0 d It O kn Vn \o kn kn M M M Wp ,-- r-. — . a R� u rA O\ O\ N M V M M M M M M M M M M M M M U� CD U R y d N v) M(:N o0 00 kn N O\ 01 \�C N � > U w � � O d R �,+ V 00 .--• l� M M \Q DO M O M'T' M �Q d' o as U ...I N R p 6 �,+ ++ O Q o O— N M 00 M W ON V- N ON It O O M":T M kn kn O\ N R ycu y N M M'tt kn N M [� w �a Vy .Ritz Gi ti r -'t 00 cn cn O O 00 O N O "v � M a\ M � M O� M a1 M O d; 00 M> ai N kn kn DD kn M ',t U M M M M M M M M Q M M M M a� C1 a> 0 a'v a \�0 00 kn kn \.O N 00 00 o ON kn 00 x 0 0 0 0 0- 0 0 0 0 0 � d C x� z O > > m > > > > �z zco z-,z z z L L O_ O N N M _M d t to Q O O O O O O O O O O O O O ca cts s 0 �� ?� U O E 0 y O y U v>i c0i 0 0 tea, ca v y C h w O o � � � O p y ir. Q O ; N L fa L� ,0 N & oN a U> bo�n �• U V � Ca "TJ E is r O y • O Q R cz cLa ti K ESU "iYs a� 0 — E -p C� �'E— C E °' U gE a� s aUa 7 > a o.� �o 3 0 a o o o Y U .Y O y`r, is 0 U O Sia =w° 0. O i O O E K w 0 .y O 0 .aE�=aUo"o �U "oo— E 0 ca q0 L N Q L i N YEEE.�L�� U °�> ur p c° U s N N o >,o,E W " 00 ca�33 caU o N U � N M dam• d' C Gray & Osborne, Inc., Consulting Engineers Based on the winter water use shown in Table 4-1, the City has had a residential winter water use of 44 gpcd, and an average employee winter water use of 28 gpcd since 2010. To be conservative, a per capita flow of 50 gpcd for residential sewer flows and 30 gpcd for commercial flows will be applied to project sewer flows and for hydraulic modeling of the sewer system. The Washington State Department of Ecology Criteria for Sewage Works Design recommends a per capita design flow of 16 gpcd for schools with a cafeteria and showers, and 10 gpcd for schools with a cafeteria but without showers. Since the majority of the student population in the study area is associated with Bothell High School, which is equipped with showers, the value of 16 gpcd is applied to the school population within the study area. The student population for the University of Washington Bothell Campus is included in the employee population estimates, so is not included in the school population projections. Wastewater Equivalent Residential Unit (ERU) The number of City single-family and multi -family residential sewer connections in 2016 was 5,175. With an estimated 2016 population of 22,155, the City has approximately 4.28 persons per connection. The Washington State Office of Financial Management estimates a single-family residential population of approximately 2.3 persons per household for the King County Portion of the City of Bothell. Applying the 2.3 persons per household to the 4,867 single-family connections yields a population of approximately 11,194 people. The remaining population of 10,961 people are attributed to the 308 apartment, mobile home, and duplex connections, which is an average of 35.59 persons per connection. The large number of persons per connection can be attributed to a number of large homeowner associations and apartment complexes that are billed as one connection and not by their individual units. Applying 50 gpcd to the single-family residential population of 2.3 persons per household yields an equivalent residential unit (ERU) of 115 gpd. DOMESTIC FLOW PEAKING FACTOR A peaking factor is used to convert average domestic flow to peak domestic flow. With the exception of four lift stations that serve a small portion of the service area, the City primarily serves areas that flow by gravity directly to the King County Interceptor, where there is no ability to measure flows. To develop a peaking factor, the diurnal curve for drinking water developed by the Washington State Department of Health (DOH) is applied. The DOH curve is illustrated in Figure 4-1. City of Bothell 4-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers 200% 180% 160% 140% - - - en '120% Q 0100% a 80% d a 60% 40% 20% 0% 0 3 6 9 12 15 18 21 24 Time (Hours) FIGURE 4-1 DOH Diurnal Curve INFILTRATION AND INFLOW King County conducted flow monitoring of 15 basins within the City's sewer service area as part of its Regional Infiltration/Inflow (1/1) Control Program 2001/2002 Wet Weather Flow Monitoring. Flow monitoring was conducted from November 2001 through January 2002, with ten storm events occurring during this period. For the Plan, the mini basins established by KCDNR have been reconfigured to follow parcel lines and the City sewer service area boundary. Figure 4-2 maps the reconfigured mini basins within the City sewer service area boundary. Some areas of the City were not monitored by KCDNR; mini basins have been created for these areas. The KCDNR I/1 values were renormalized to the total area of the basin. The renormalized 1/1 values have then been applied to the reconfigured basins. Three storm event were removed from the study set for KCDNR basin BOT002 because of anomalous results. Recorded peak 30 minute I/I rates for the 15 basins ranged from 432 gpad to 11,108 gpad. 4-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update 0 0 0 0 0 —LLLi r �� CD s z v N •i �.., LLL • L ry ,: �.`s • ." "'. "•• x "�ci'ssctic•T tt'.`';nri_ t v •••• r i Y f • • tom• mm • . • L �� i • !• r Y * "� ; ,g ° •.pr e.+lam' • • • ' «�- �a�'r � f- • O lc ort ` z " • , ♦ m iii Z •J = 71 • o . • •./. ••� `a vNZ ' • Mme.. �. f ,i. !' d • ♦�• t 4T i a s '+ ° +i •� •• 1. � +-iw a f, .Y � •+tR j ,'L .,• `wi� s a , i • a• _!. q< m'. m •iL -�Rd gid° i Q J to ? aU) W Q w , > U m Z a WZ = W_ w N W 4 aZ h � v 0 m LLJ �a Y p ¢ o a 0 pL YO w � L u, ULD LL d z 0 Z a w 3 z y a Q W H U W Q D Ut o u p w z m r; rc W LL Z S w Z U K 7> U W 7% m m o tt U v~i Q W W ii ♦ ; 1M J •..r 3-, Gray & Osborne, Inc., Consulting Engineers Table 4-2 provides a summary of the results from the King County 2001/2002 Wet Weather Flow Monitoring report. Table 4-3 provides a summary of the I/I values for the reconfigured basin area. Based on the reconfigured basin I/I values, the City's collection system currently has a 30 -minute peak I/I value of approximately 1,301 gpad. Historically, 1,100 gpad has been a benchmark 1/I rate used by KCDNR for future planning purposes. In the Updated Planning Assumptions for Wastewater Flow Forecasting (2014), KCDNR updated this value to 2,000 gpad for new sewers with a degradation rate of 7 percent per decade. City of Bothell 4-7 Wastewater System Comprehensive Plan Update March 2018 N W F� F Y 10 0 I /LA R R C F R �p M d• N M r-• W) M N l-- 00 l- O C' M .-. l- N M T 'T M M �O M 7 M 00 N O1 l- W O r- 14D M W% 7 O O N M dWMa,s N N O O CSC C R 00 M l- l- 00 Vl O 'D 'o 7 N M O N M'0 M 00 7 7 l - 01 00 00 h RWM:rs ti O LS W R% = R r^' F R Q1 O1 M M O kn �O ^ 0 0 7 00 l- 00 7 M v'1 O, 00 V1 O� M N M 00 �p +" R d r.i N .-. •--� M •--� •--� N — M 7 N W M wa C4 ry+�•' OOr R r^ [� '� O rON O N M `D OO\ O O M M 00 Q 00.-.00 N DD as N z N N ci m R co 00 vi S R C R N O 01 N"o 01 r- M O v1 w r 7 O l- �o w w NW� r r n r 00 O cN .-�A n\O" N" Oen l�N" N M Wn— y N— N — M N N"I- S M pwfn R O R O Q 00 .-. O1 M d' N 00 Nr- �D 7 00 •-.• •-.• N 7 O M ^ .M-, �O N M N �p •-� N ^• m N N — ^-� 1- en s el N06w 7 p b R C E.y R N ON n Q .-. .�., M— furl N E O r N N N r N O •-- '� O� •-- l� ^- O� N eh •--� M •-• •-- �t M er 7 N R oWaas z vl Cl V d' 00 c7 -7 Cl) N l- Q �O M O 00 N N N Vl l� N AE 1+ 00 t 7 ON an N Z C\ eh M M •-• -n N C1 N a+ R zWMo,s 00 N Vi .-+ 'O N ate+ 7 O "C O •-- •-• r [� •-� ,�„ N �WMF+is N w 7 O 'O V1 00 cw m Q oO oo V1 O O O U1 O WO H M O m M 00 O N Z TT 7 zwMws N R CF ORN •E'. WQIN �ONQNN 7pO "O ONOMO !7' A 00 M 00 l� z � 7 ON en C4 C ai •-- OOOOOO^� N M 7 �O Q1 O •-•• •-� N M_ 7 V1 �O 1� DD d • y �. O O O O 0 0 0 0 0 0 0 0 0 0 0 L Wx 0�0�G�0��0�0�mmG�q��G�G�o�gd 0 I /LA Gray & Osborne, Inc., Consulting Engineers TABLE 4-3 Reconfigured Basin I/I Rates Basin Name Acres(i) Peak UI per Acre ad (Z) BOT001 200 390 BOT002 105 7,643 BOT003 200 1,093 BOT004 196 1,941 BOT006 116 1,122 BOT009 276 425 BOTO 10 137 1,066 BOT011 140 1,468 BOT012 146 970 BOT013 166 1,721 BOT014 177 655 BOT015 148 809 BOT016 91 911 BOT017 206 1,120 BOT018 1 227 1,046 Average 1,301 (1) Reconfigured Basin Area. (2) I/I Value based on reconfigured basin area. (3) Weighted Average based on area. SUMMARY OF WASTEWATER FLOW DESIGN CRITERIA The wastewater flow design criteria for the City is summarized in Table 4-4. The table contains calculated values for the total flow generated in the City based on developed land area and population projections. Buildout is assumed to occur in 2064 based on the residential growth rate of 1.0 percent and the employee growth rate of approximately 1.1 percent. Sewered area is developed based a GIS analysis of the area currently served with sewers and projected to the entire study area by buildout. I/I is held at a constant 1,301gpad through buildout. City of Bothell 4-9 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 4-4 Summary of Wastewater Design Criteria Design Criteria 2016 2022 2036 Buildout") Residential Population 22,155 23,541 27,121 36,055 Per Capita Domestic Flow cd 50 50 50 50 Residential Domestic Flow d 1,107,774 1,177,060 1,356,053 1,802,746 Employee Population (2) 12,146 12,991 15,198 20,801 Per Capita Employee Flow ( cd) 30 30 30 30 Employee Domestic Flow d 364,391 389,738 455,952 624,037 Student Population 5,051 5,367 6,183 8,206 Per Capita Student Flow cd) 16 16 16 16 Student Domestic Flow d 80,813 85,868 98,925 131,299 Total Average Domestic Flow d 1,552,978 1,652,666 1,910,930 2,558,082 Domestic Peaking Factor (3) 1.74 1.74 1.74 1.74 Peak Domestic Flow d 2,702,182 2,875,640 3,325,018 4,451,062 Sewered Area (acres)(4) 2,363 2,538 2,947 3,765 Infiltration and Inflow (gpad) 1,301 1,301 1,301 1,301 Infiltration and Inflow d 3,074,263 1 3,302,263 1 3,834,264 4,898,265 Peak Wet Weather Flow d (5) 1 5,776,445 1 6,177,903 1 7,159,282 1 9,349,327 (1) Buildout population assumed to occur in 2064 based on rate of 1.0 percent for residential population and 1.1 percent for employee population. (2) Employee population includes student population for the University of Washington Bothell Campus (UW/Cascadia). (3) A domestic peaking factor of 1.74 was used per Figure 4-1. (4) Developed based on a GIS analysis of the area currently served with sewers and projected to the entire study area by buildout. (5) Peak Wet Weather Flow is the sum of Peak Domestic Flow and Infiltration and Inflow. 4-10 City of Bothell March 2018 Wastewater System Comprehensive Plan Update CHAPTER 5 EXISTING FACILITIES INTRODUCTION The City's original wastewater collection system was constructed in 1960 with the formation of a Local Improvement District. Additional sewer facilities have been constructed within the City over the past 40 plus years. REGIONAL SEWER SYSTEM All of the wastewater collected in the City flows to the King County Department of Natural Resources' (KCDNR) wastewater treatment facilities, located south west in the City of Seattle (West Point Treatment Plant), north east of the City in unincorporated Snohomish County (Brightwater Treatment Plant), and south in the City of Renton (South Treatment Plant). The City has 12 connections to KCDNR sewer interceptors that convey the wastewater to the KCDNR treatment facilities. The regional sewer map, which includes KCDNR's treatment facilities is shown in Figure 5-1. A copy of the KCDNR agreement is located in Appendix A. EXISTING WASTEWATER COLLECTION SYSTEM The City's wastewater collection system consists of four sewage lift stations, approximately 1,900 linear feet of force main, and 69 miles of gravity sewer line. DRAINAGE BASINS The City has 19 sewer basins designated within its collection system. These basins either drain directly to KCDNR interceptors or drain to lift stations that pump to the KCDNR interceptors. The 19 sewer basins are shown in Figure 5-2. SEWAGE LIFT STATIONS An inventory of the City's sewage lift stations is presented in Table 5-1. Lift station locations are shown in Figure 5-2. A schematic representation of the City's lift stations and force mains is shown in Figure 5-3. Each lift station is described in the subsequent sections. Lift Station 1 Also known as the Valhalla Lift Station, Lift Station 1 serves the Waynita Basin, which consists of the area near Waynita Drive to the south of the Sammamish River. Lift City of Bothell 5-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers Station 1 is equipped with two 10.0 horsepower, 543-gpm pumps, one 15 horsepower, 412 gpm pump in a bypass vault, and a permanent 50 kW generator with automatic transfer switch. Lift Station 1 was upgraded in 2008. Lift Station 2 Also known as the Feedmill Lift Station, Lift Station 2 serves the Norway Hill Basin, which consists of a portion of Norway Hill to the south of the Sammamish River. Lift Station 2 is equipped with two 15.0 horsepower, 571-gpm pumps and a permanent 35 kW generator with automatic transfer switch. Lift Station 2 was upgraded in 2014. Lift Station 3 Also known as the Bothell Station Lift Station, Lift Station 3 serves the Cedar Park Basin, which consists of a portion of Norway Hill to the south of the Sammamish River. Lift Station 2 is equipped with two 7.5 horsepower, 900-gpm pumps and a permanent 50 kW generator with automatic transfer switch. Lift Station 3 was upgraded in 2017. Lift Station 4 Also known as the Camden Highlands Lift Station, Lift Station 4 serves the Camden Crest Basin, which consists of a development of approximately 23 homes just north of the King/Snohomish County border. Lift Station 4 is equipped with two 3.0 horsepower, 100-gpm pumps and a permanent 10 kW generator with manual transfer switch. Discussions about improvements to Lift Station 4 are included in Chapter 8, Capital Improvement Program. 5-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Z a J a W } •r > F�pl a w =LLI W to W v - W N W CO 2 4, J O�Z 0 LL w C7 h L'i . z O o LL, nw LLI 016 o � ' , A � • . � ` /fir � . v.-�jd WOC .. •Pra ♦ • c ` ,�®,..-.._ `•' ^-i ^'sx s y, ,Z4n�N r - Nie , • ` N � A8W pe,N 3 R ` � to N19y l WiN ID tp A 9 til �� � 2 '•' IN H0 W Z U= �0 J d o� Ct V z Q J d N J N = Z � J J N W J (_9 a r A W = N Z _ _> O m H 0 LL N W == W a O O K m p O = o 00 Z U> 0) Q Z 6 J J `�' ¢ Q QQ z z a — LL p 0(� LL y l� �{ Z W N J V ❑❑ Q Z �i Z H N U9 ^d J z Lu rn 2 W > It 1 F y K Q 6 W 0 0 0 O O O K H �+ Q m 0 `� m o❑ c9 m z z a to to >> 3 5 up W." z 3 aN oa HSlwoHorvs anlnwaoom Z O = Z _.. N � ;N 3N V Z P;�N cA Ji � �31J 3AV HIOf ............... n W J a FI r z Q J d J J N W Z W = N m Z m 0. m LL p 0(� LL y l� �{ Lu rn U Q w i 00 0 N `v d M O i v a 3 c c o i a+ 'C c0 pip N C w . _ W Q `� = co 44: 7 E F= '� O> O N is O Q O O O U S f) V E-" O ^' M CA 0. N > z- a x -7 3 M N N �knE 3L� w•�,l� oW,x w�o v, 5 C::q, O M z N N U kn y U 'n Msl1kn O y• C W a' V) k M z U Q •V U O vii c� O b L7a N U •+ w R d' N 00 C) a cn O N NV'i CL G E U N L4 M � �• p � L4 ' �' � � z N U CQ* N U, O N cn N in N 30 N O = cC N U o p a4a�� O a c3 O 0 0 aw 033 0 0 0 'n azi v�Z a �v)za,aUF-A '� � E E y a� 0 0 0 c t7t�[�w33 c 00 0 N `v Gray & Osborne, Inc., Consulting Engineers FORCE MAINS An inventory of the City's force mains, sorted by pipe diameter, is presented in Table 5-2. The City's force mains consist of two 8 -inch diameter force mains, a 6 -inch force main and a 4 -inch force main. The City also operates a 10 -inch diameter siphon. A summary of the force main for each sewage lift station is presented in Table 5-3. The length and capacity of each force main is provided in the table, with the capacity as calculated for a maximum velocity of 8 feet per second. The location of each force main is shown in Figure 5-4. TABLE 5-2 Inventory of Force Mains(" Pipe Diameter Length LF 8" 879 6" 808 4" 178 Total LF 1,865 TABLE 5-3 Inventory of Lift Station Force Mains and Siphons Lift Station(') (Force Main Source) Diameter (inches) Length (LF) Capacity(') ( m) Lift Station 1 (Valhalla) 8 465 1,253 Lift Station 2(Norway Hill 6 808 705 Lift Station 3 Cedar Park 8 414 1,253 Lift Station 4 (Camden East) 1 4 1 178 1 313 Brickyard Basin Siphon 1 10 1 286 1 1,958 (1) The location of each lift station, force main, and siphon is shown in Figure 5-4. (2) Capacity based on velocity of 8 feet per second (8 fps). GRAVITY LINES An inventory of the City's gravity sewer lines, sorted by pipe diameter and pipe material, is presented in Table 5-4. The 6 -inch and 8 -inch gravity sewers collect sewage flows within residential areas. The gravity sewers larger than 8 inches typically collect sewage flows from smaller pipes and convey the flow to lift stations or larger interceptor lines. Gravity sewers by pipe diameter are presented in Figure 5-4. 5_-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update mx 3N Ob H914yOHONS 3111ANI000M ,J r ` z uo 3ntlie2, •' - f •. •:•i'i«K••� N ••� ti df 3nb ravinia:ire} iN 3nv Nio9 � E n. r! .�•'�•. 3N 3ntl Obt[ ty d e9• Hst N 3N 3ntl H189 3N 210 blrNtlflf Z Q J O a w w Z w W So 10 N 0 w OF O O m W 0 w a w LL O O 1- U O W z w O fn rc z N K Lu rn w O w z :I = } ~ ll.. H Q N W 1: z a O J m_ LL U O H Z K O LL¢> z �LL D z F Y z O� Y w WJ oS r w> f/! Lu •U k xiO 4N df 3nb ravinia:ire} iN 3nv Nio9 � E n. r! .�•'�•. 3N 3ntl Obt[ ty d e9• Hst N 3N 3ntl H189 3N 210 blrNtlflf Gray & Osborne, Inc., Consulting Engineers TABLE 5-4 Inventory of Gravity Lines Pipe Size inch AC Concrete Ductile Iron HDPE PVC Steel Unknown Total feet Total miles Unknown - - - - 503 - 117 620 0.12 6 - 95 - - 2,542 - - 2,636 0.5 8 1,273 91,270 5,933 1,839 181,692 6,322 703 294,031 55.69 10 - 5,026 56 - 9,404 435 - 14,921 2.83 12 - 2,248 4,265 - 13,296 - - 19,809 3.75 15 - - - - 2,846 - - 2,846 0.54 18 - 26 - - 26 0 21 - 2,034 - - - - - 2,034 0.39 24 - 2,254 - - - 333 - 2,587 0.49 Total feet 1,273 102,926 10,280 1,839 215,283 7,090 820 339,510 64 Total (Miles)l 0.24 1 19.49 1 1.95 0.35 40.77 1 1.34 1 0.16 1 64.3 1 - TELEMETRY AND CONTROL The City's telemetry system continuously monitors and historically tracks sewer system characteristics, provides on-call reporting and alarming, and controls a multitude of remote system components and appurtenances. Some of the characteristics that are monitored include wet well level, pump runtime, and alarm status. The system allows the City to efficiently monitor the operation of their facilities from the telemetry headquarters located at the City's Public Works Operations Center (21233 20`h Avenue SE). The system has remote capabilities in which operators routinely remote access systems from almost any location via laptop, personal computers and telephone. SCADA System The wastewater utility has a Supervisory Control and Data Acquisition (SCADA) system with master control located at the City Shop. The system use Wonderware software to provide a graphical user interface allowing the operator to view and generate reports with the data collected from 23 remote sites, as well as providing the ability to implement and modify automated programmed control strategies. The City's remote sites are equipped with Allen Bradley Compact Logix programmable logic controllers (PLCs) and Allen Bradley PanelView displays. Communication between the remote sites and the master control at the City Shop is cellular based. The system displays enable the operators to monitor and report system conditions from data collected from 23 water and sewer RTU sites. The City monitors four lift station sites for wet well level, pump run time, pump status, intrusion alarms, pump fail, high level alarm, power failure, communications failure, generator run failure (when applicable), City of Bothell 5-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers automatic transfer switch failure (when applicable), phase failure, flood alarm, and smoke alarm. DECANT FACILITY The City's vactor decant and solids drying facility accepts the screening and settling of decanted liquids from stormwater and sanitary sewer facilities. The facility effectively removes the solids for landfill disposal before discharging the liquids to the sanitary sewer system. Table 5-5 describes the record parameters of the facility TABLE 5-5 Vactor Decant and Solids Drying Facility Parameter Size/Dimension/Standard/Comment Address 17555 Brickyard Road NE Year On -Line 2003 Station Type Vactor Decant and Solids Drying Maximum Liquid Storage Capacity 9,792 gallons Maximum Detainable and Releasable Liquid Storage 7,270 gallons Hours of Operation Monday -Friday 7:30 a.m. — 4:00 p.m. Decant Facility Area 520 ft2 Drying Bin Area 800 ft2 Discharge To King County Sanitary Sewer System — West Point Treatment Plant SEWER AGREEMENTS The City does not own, operate, or maintain a wastewater treatment facility. All wastewater collected within the City is transported for treatment to King County via King County interceptors, as provided by the agreement between the City and King County. Interlocal sewer service agreements have been established with Northshore, AWWD, and WWD for areas within the City's sewer service area boundary that are served by adjacent districts, or for areas served by the City within adjacent district boundaries. Copies of the agreements are located in Appendix A. KING COUNTY AGREEMENT In 1961, the City entered into the existing sewer agreement with KCDNR, then known as the Municipality of Metropolitan Seattle, or Metro. The City and Metro signed amendments to the original 1961 agreement in 1964, 1982, and 1985, and 1992. The 1985 amendment extended the service agreement through 2036. The 1992 amendment 5-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Cray & Osborne, Inc., Consulting Engineers adjusted the definition of a wastewater ERU from 2,700 cubic feet per quarter to 2,250 cubic feet. Based on the terms of the agreement, the City is billed quarterly by KCDNR based on the number of residential customers and the total water consumption for non-residential customers. Flow meters are not used to establish sewer flows for billing. Each residential customer is billed based on a quarterly sewer flow of 2,250 cubic feet, or approximately 184 gpd. According to the information provided in Chapter 4, the average residential customer within the City has an average residential flow of 115 gpd. The difference of approximately 69 gpd is attributed to I/I. Non -single-family residential customers are billed based on metered water consumption, with subtractions made for irrigation use. The water use is then divided by 2,250 cubic feet to establish the ERU for these customers. The total ERU (residential plus non- residential) is then applied the 2,250 cubic feet per quarter charge, which is then passed on to the City. There are no conditions to the agreement that limit the instantaneous or monthly amount of sewage transferred by the City to KCDNR. The City currently has 12 connections to KCDNR sewer transmission interceptors. Table 5-6 provides a summary of the KCDNR sewer connections. TABLE 5-6 KCDNR Interceptor Connections KCDNR Connection No.G) Location City Pipe Diameter inch KCDNR Pipe Diameter (inch) 1 SR -522, East of 102"d Avenue NE 12/24 60 2 NE 1801" Street and approximately 100`h Avenue NE, south of SR 522 10 60 3 Intersection of NE 1801h Street and 98`h Avenue NE 8 60 4 East of SR 522 at NE 176`h Street 8 60 5 North of 195`h Street east of I-405 8 42 6 West of North Creek Parkway South at I-405 15 60/42/42 7 Intersection of SR -522 and 120`h Avenue NE 12 42 8 North of Sammamish River and Vahalla Drive and east of 96`h Avenue NE 12 72/78 9 East of terminus of NE 186`h Street and west of North Creek 8 60/84 City of Bothell 5-7 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 5-6 — (continued) KCDNR Interceptor Connections KCDNR City Pipe KCDNR Pipe Connection Diameter Diameter (inch) No.(1) Location inch 10 Intersection of SR -522 and I-405 (Serves Staples 8 42 and Home Depot) 1 1 East of SR -522 at NE 1751h Street 8 60 12 I-405 On-ramp and Sammamish River (Serves 10 42 10 -inch Siphon) (1) KCDNR Connection number corresponds to those shown on Figure 5-4. 5-8 City of Bothell March 2018 Wastewater System Comprehensive Plan Update CHAPTER 6 COLLECTION SYSTEM EVALUATION INTRODUCTION The components of the existing sewer collection system are evaluated based on the design criteria for wastewater flows in Chapter 4 and the City's future population and land use zoning in Chapter 2. The components of the City's sewer system are broken down into four categories for capacity evaluation: • Wholesale Treatment and Transmission Capacity (Based on Agreements) • Sewage Lift Stations • Force Mains • Major Gravity Lines The capacity evaluation is performed by separating each system component and generating the Peak Wet Weather Flow (PWWF) from the contributing area as well as the number of units or connections. The hydraulic model software is used to develop total flows and to analyze the capacity of major gravity lines within the collection system. HYDRAULIC MODEL This chapter presents a hydraulic model of the City's collection system and explains the development of the hydraulic model and the assumptions included in the model. The output from this model is used to evaluate the capacity of the existing collection system and to identify improvements that will be necessary in the future. The model is intended to be updated and maintained periodically and used as a tool to aid in future planning and design efforts. The model is developed with InfoSewer software (Version 7.6), by Innovyze, Inc. As InfoSewer is GIS -compatible, the hydraulic model can be integrated into the City's GIS system. MODEL ELEMENTS The hydraulic model uses a database that contains the location data for the sewer system elements (i.e., manholes, pipes, lift stations, and force mains) and hydrologic data including system loading, element sizes/diameters, pump flows, system controls, etc. Necessary data for the hydraulic model is described in Table 6-1. City of Bothell 6-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 6-1 Collection System Information (1) The Horizontal Datum used is the Washington State Plane North (83 feet). (2) The City's vertical datum is NAVD 88. The previous 2006 model was done in NGVD29 and converted to NAVD 88 to be consistent with the City's current datum. Collection system information was obtained primarily from the previous hydraulic model which was based upon the City's GIS base map. Recent downtown development locations were updated within the model based upon as-builts provided by the City. Where invert elevations of manholes were missing, the invert elevations were linearly interpolated between known inverts. Where manhole rim elevations were unknown, LIDAR contours were used to estimate the ground elevation at the manhole locations. For simplicity, all lift stations were modeled as constant -discharge pumps, so that the lift stations produce a constant discharge regardless of head conditions. Force mains are modeled but are analyzed outside of the model, based upon a comparison of lift station discharge and the capacity of the force main using the Hazen Williams Equation. Modeled network data for sewer pipes and manholes is included in Appendix E. FLOW DATA The flows inserted into the model are based upon area, population, and infiltration and inflow. For modeling purposes, the City is divided into 17 basins and 134 subbasins. 6-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gravity Sewers/Force Category Mains Manholes Pumps Wet Wells Identification Name (from City, e.g., Name (from City, Lift Station Name Lift Station Name No. SM38-027) e.g., MH 91012 Location Determined by upstream Location (X and Wet Well and Location (X and Y and downstream Y coordinate, Force Main coordinate, manholes imported from Locations imported from GIS GIS base map)(') base map)(') Elevations Upstream and Rim and Bottom -- Ground and Bottom Downstream Invert Elevation (2) Elevation (2) Elevations (2) Size Pipe Diameter, Length Manhole Wet Well Diameter, (Calculated from X and Diameter Depth (calculated Y coordinates of from ground and manholes and wet wells) bottom elevations Flow Criteria Pipe Roughness, Pipe Headloss Pump Capacity Shape Other Sewer Basin 1 nformation (1) The Horizontal Datum used is the Washington State Plane North (83 feet). (2) The City's vertical datum is NAVD 88. The previous 2006 model was done in NGVD29 and converted to NAVD 88 to be consistent with the City's current datum. Collection system information was obtained primarily from the previous hydraulic model which was based upon the City's GIS base map. Recent downtown development locations were updated within the model based upon as-builts provided by the City. Where invert elevations of manholes were missing, the invert elevations were linearly interpolated between known inverts. Where manhole rim elevations were unknown, LIDAR contours were used to estimate the ground elevation at the manhole locations. For simplicity, all lift stations were modeled as constant -discharge pumps, so that the lift stations produce a constant discharge regardless of head conditions. Force mains are modeled but are analyzed outside of the model, based upon a comparison of lift station discharge and the capacity of the force main using the Hazen Williams Equation. Modeled network data for sewer pipes and manholes is included in Appendix E. FLOW DATA The flows inserted into the model are based upon area, population, and infiltration and inflow. For modeling purposes, the City is divided into 17 basins and 134 subbasins. 6-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers Each subbasin has a domestic flow component and an I/I component based upon the population, the acreage and the I/I rate for the area within the subbasin. The flows within a subbasin are assigned to a single manhole in the model. The modeled subbasins are shown in Figure 6-1. Population A population projection for each model year is stored in Excel format, organized by parcel. Each of the parcels within the study area is assigned a residential, school, and/or employee population for the 2017, 2022, 2036 and Buildout scenarios. Each parcel in the study area is further categorized as currently serviced or unserviced in the existing scenario. The population is organized in this manner for flexibility in distributing populations to different subbasins for adding proposed developments to the model in the future. Existing Population Estimate The existing population is based upon City population data where 2.3 persons per household was distributed to single family residential areas. Multi -family residential population is distributed by parcel, using City records to identify multi -family locations and the number of units per development. Existing employee population is distributed on an employee per area basis across commercial areas, with the exception of the University of Washington Campus, which has a student and employee count of 5,327. School populations are placed at their respective locations. 2022 and 2036 Population Projections The year 2022 and 2036 residential populations are based on City estimates as shown in Table 4-4. To distribute the population in the model, recent and proposed developments are added to their appropriate parcels in the GIS system. Employee populations are increased linearly at their existing locations to represent an increase in building heights and increased employee densities in commercially zoned areas. School populations are increased linearly to reflect the increased City density. Buildout Population Projection The buildout population distribution is based upon zoning and the buildout population described in Chapter 2. To distribute the buildout population in GIS, each parcel is assigned a population based on the zoning of the parcel and the area of the parcel. Population projections for each basin are summarized in Table 6-2. City of Bothell 6-3 Wastewater System Comprehensive Plan Update March 2018 C L4 i R O 0 d (n O n � O O N i 0000 Ile i O N N O N r N i i N i OO all 00 It ll N N N M kn ch to t to W p .� � � N eF \40 d1 O M r- a\ 00 N N N M N � d� dam,^ 0�0 �p to 01 14,) N � -- O1 O� ..Or N N cq� 00 00 � M M� OM N N O N O N V Nto to M \O 00 d N M M N - N M N N~ N O p 0 C 0 V 1 M d �O �o 00 O1 O� N M Ikn M -- � 00 00 ON d l,- M 01 M .-� 00 M N \p kn M l� N M It l� p N N N N M -- M N -� M N M M =i � O� N to �O t, 00 t� �p M to O 00 kn M N O1 d' N O M d' M O M v) M O1 M _ O, N M ON I kn W) N N N O t-- O1 of N d to In � M� M O M ti N N a/ r ON roN 00 ANO "t O OHO 00 M 'o O 00 110 ' p r- tn N N N N N W t,� N 00 M M M N N -• -- N .-. -- -- N r- N N tn oo ,� M �' M --. ^� O� l� �p tn 0 .M -i y ^ F--1 00 00 cl a° o U N x z �q -c CIS N Cl C N 0 2r ti v c pq U U v) 7 H z a a J W Ct O n 2 W N N z 2� f w w a a m W aw K r $ w w r- g Y 0 O w Q o z --54--Q oo (K� ~ w = 3: a LL pU W W U Y J J O Z K U a K 2 2 N m LL p Q p O Z 0 u�i w W t! o w w o Y o o a Z z 3 W O W z z °d °a ri O O m L 0 o w o re 0 n > m rn rn 2 0 rc a¢ w o 0 0 0 a u W 2 W LL U rn z m v v v c� z z a vOi > 3 5 5 3$ h LU J vmiv..v In i o�« 'r z , f„ y- 6 U z r t T �� ` ;moi �• i .......... �,.,..,.. h... N a. ry � / 0 i N 1 J i 1 3N -V 470Qt r! 4.� i ! j ..........9 B3N "O-V 4188 i - ! �..R,....... 3., ..�a..d..a...e. .,�® .....„...>..n....,.. 9 P 0 i Gray & Osborne, Inc., Consulting Engineers Infiltration and Inflow Each subbasin is assigned an infiltration and inflow value that is based on the KCDNR 2001/2002 Wet Weather Flow Monitoring Report. For existing subbasins, the 1/1 value is based on the KCDNR flow data for the basin that it resides in. Future 1/1 flows are based on an ultimate buildout I/I value of 1,100 gpad. Each subbasin is assumed to have an ultimate 1/1 value of 1,100 gpad at buildout. Developments with I/I values less than 1,100 gpad utilize the existing value through the 2022 and 2036 scenarios and use a value of 1,100 gpad at buildout. For basins that exceed I ,100 gpad, the existing flow value was applied to determine the impact to the system, but 1/1 reduction projects will be included in the 6 -year capital improvement plan to reduce flows in the basin to below 1,100 gpad. The I/I for each basin throughout each scenario is summarized in Table 6-3. TABLE 6-3 Projected Infiltration and Inflow by Basin Sewer Basin KCDNR Basin Name No. of Subbasins Area(') acre 2017 I/I 2022 ad 2036 Buildout Brickyard(') BOT004 17 165 1,941 1,941 1,941 1,941 Camden BOTO16 17 149 911 911 911 1,100 Cedar Park(') BOTO17 2 157 1,120 1,120 1,120 1,120 Downtown(') BOTO 11 25 154 1,468 1,468 1,468 1,468 Glenwood BOTO15 15 252 809 809 809 1,100 Morning Side(') (Z) 8 71 1,301 1,301 1,301 1,301 North Creek(') (z) 1 67 1,301 1,301 1,301 1,301 Norway Hill BOT003 3 218 1 1,093 1,093 1,093 1,100 Pioneer Hill(') (Z) 11 128 1,301 1,301 1,301 1,301 S UW0) BOTO17 3 169 1,120 1,120 1,120 1,120 SR522 West(') BOT002 1 55 7,643 7,643 7,643 7,643 Staples Home Depot(') (Z) 1 35 1,301 1,301 1,301 1,301 Valley North 185`'' BOT009 9 386 1 425 425 425 1,100 Wa nita BOT001 7 313 390 390 390 1,100 Westhill A(') 2 91 1,301 1,301 1,301 1,301 Westhill B BOTO12 6 136 970 970 970 1,100 Westhill 0) BOTO13 5 179 1,721 1 1,721 1,721 1,721 (1) Exceeds Maximum Allowable I/I rate of 1,100 gpad established by KCDNR. (2) Used the average I/I value between all KCDNR basins (1,300 gpad). (3) Represents "buildout" area. City of Bothell 6-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers HYDRAULIC MODELING ANALYSIS YEAR 2017 THROUGH 2036 FLOWS The 2017, 2022, and 2036 flows were run in separate scenarios to determine the capacity of the City's existing sewer mains. The results of the model were identical between all three scenarios in terms of which pipes were shown to be at capacity. The six deficient pipes shown within the model are described in Table 6-4. Figure 6-2 illustrates the problem areas identified by the model and potential solutions to each. BUILDOUT FLOWS Based on the hydraulic model, the system is anticipated to have an additional five pipe capacity issues in the Buildout scenario beyond those modeled in the previous scenarios. The details of the model results and potential solutions are provided in Table 6-4. Figure 6-2 illustrates the problem areas identified by the model for the buildout scenario. 6-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update v-' 1 Z 7 O a M N r Q Y J a m a S r O �W row- U) J V5 W 000 0 J W W U z 1 7 O a M N r = N W ~ W Y m a S r O �W row- � U n 1 000 0 d• m N m m `o x fl 'a a3 LL O m m N 'a2- 'a a w U LL W } r.. g \ m v N v m 5 m w w ~ F- 0 02 i A 41 a m � v z °�� U '9 E : u p = i R W a I s a' �t o. a. _ 0 o o c o c o o v1 00 h L 00 —vo r - i as — 00 c° 3 a °o a o 3 3 �aci S a o api C N y h U U _ � N 9INS U bQ sU. 'U a U 0 R y3 R 0 7&�q� u 4> zQ. z C � ° O O O O O Lir �O 7 'It OM M e aro rn rn o p„gi- N N N W) N U 0 b a, rn ON �o O\ M M M QOi M O KI C CD � N M M M N b O N Q, O r O N V'1 O M O M O M d' 1p 40; ° 00 w O O O O O^� O M N O 7 O O ON 00 O N N .M.. N 00 Ncq cli o W W7iz z y 4) 7N z= k, „ c w-2 ;z en W z N CQ F y p O ^0 �+ c N V'1 00 a O 00 ami 1:4aci Wz aoi N¢ W y w L c U Q z V]5 w Q V] $ z ¢ Z V] N h d U 00 s z N ."'zN r R 0.i N �� s R = kn� cG Obi � _ti ti ti (U 3 c a c c ° ° v �? m Or" ee fs, c N 00 00 00 y a d 'w 00 A a o v d N M � c o � A � a = u 00as a p 00 I i li v V 41V V LL O O O Cl O O O O rq r: a cU cU cCU U y N kn N kn N -n kn <7) kn 01 W) ON 8 0 8 zkn C7 V C7 � v 00 00 00 ^ aq 00 M O O O O O O A Q 0 O O O O c m Gray & Osborne, Inc., Consulting Engineers SEWAGE LIFT STATION CAPACITY EVALUATION The existing sewage lift stations, including pumping capacities, are summarized in Chapter 5. The capacity evaluation of these stations is conducted by establishing the future contributing area to each existing lift station and then calculating the anticipated flow for each of these areas based upon land use. The anticipated incoming flow to the lift station is then compared to the pump capacity of the lift station itself. It should be noted that the hydraulic model allows attenuation of flows throughout the pipe network which slightly minimizes peak flows to the lift station. The results of the sewage lift station capacity evaluation are presented in Table 6-5. TABLE 6-5 Lift Station Capacity Evaluation Summary Lift Station Existing Capacity ( m) Peak Wastewater Flow m 2017 2022 2036 Buildout Lift Station 1 500 194 224 263 504 Lift Station 2 470 159 238 280 383 Lift Station 3 900 136 185 216 289 Lift Station 4 100 1 5 1 5 1 (1) (1) (1) The City plans to abandon Lift Station 4 through a Capital Improvement Project that will allow service of the Camden Crest basin via gravity. The results presented in Table 6-5 indicate that none of the City's lift stations will exceed their existing capacity within the 20 -year planning period. The model indicates that Lift Station 1 will only slightly exceed (i.e., by 4 gpm) its existing capacity by buildout, but all lift stations should be able to provide the required buildout flow provided that I/1 rates are at or below the KCDNR requirement of 1,100 gpad. The City plans to abandon Lift Station 4 within the 6 -year planning period through a gravity capital project. FORCE MAIN AND SIPHON CAPACITY EVALUATION The capacity evaluation for the City's force mains is tied directly to the lift station capacity evaluation. Since none of the lift stations have existing capacity issues, and none are anticipated to have capacity issues within the 20 -year planning period, there are no capacity issues with any of the City's force mains. The hydraulic model does not show a capacity problem in any of the planning periods modeled. However, it is critical that the City flush the siphon on an annual to semi-annual basis to prevent blockages that could limit the capacity of the siphon. City of Bothell 6-9 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers CAPACITY EVALUATION SUMMARY The capacity evaluations of the City's gravity system, lift stations and force mains indicate that there are currently no lift station or force main deficiencies within the City's system. Although there are currently only six modeled gravity system capacity issues within the collection system, and an additional five modeled gravity system capacity issues anticipated during buildout, it is important to note that this condition is predicated by the City's ability to prevent increases in I/1 in such basins as the Brickyard, Cedar Park, Downtown, Morningside, North Creek, Pioneer Hill, SR 522 West, Staples/Home Depot, and Westhill Basins. A summary of the significant modeled gravity system deficiencies (i.e., surcharge was greater than 0.5') is presented in Table 6-6. The locations are shown in Figure 6-2. TABLE 6-6 Sewer Collection System Improvements COLLECTION SYSTEM CONDITION ASSESMENT The City regularly television inspects segments of the City's sewer system as part of the ongoing maintenance program. Television inspection can identify problems such as joint separation, sagging lines, cracked lines, and root intrusion. Projects to correct these condition deficiencies are described in greater detail in Chapter 8. The City has identified the following areas of the sewer system with condition deficiencies. Approximately 350 LF of 10 -inch sewer on 100`h Avenue NE from NE 202nd Street to NE 20151 Street. Approximately 450 LF of 21 -inch sewer main on NE 175`h Street from 113`h Avenue NE to 11 `h Avenue NE. • Approximately 450 LF of 8 -inch sewer main on NE 189`h Street and 10151 Place NE. 6-10 City of Bothell March 2018 Wastewater System Comprehensive Plan Update New From To Diameter Length Location Manhole Manhole inch LF North of NE 185`h Street/981h Avenue NE 62080 62082 18 94 126'h Avenue NE near NE 18151 Street 2131 2132 10 283 2132 1 1642 1 10 307 SR 522 near 102nd Avenue NE 1 84014 1 84015 1 18 246 COLLECTION SYSTEM CONDITION ASSESMENT The City regularly television inspects segments of the City's sewer system as part of the ongoing maintenance program. Television inspection can identify problems such as joint separation, sagging lines, cracked lines, and root intrusion. Projects to correct these condition deficiencies are described in greater detail in Chapter 8. The City has identified the following areas of the sewer system with condition deficiencies. Approximately 350 LF of 10 -inch sewer on 100`h Avenue NE from NE 202nd Street to NE 20151 Street. Approximately 450 LF of 21 -inch sewer main on NE 175`h Street from 113`h Avenue NE to 11 `h Avenue NE. • Approximately 450 LF of 8 -inch sewer main on NE 189`h Street and 10151 Place NE. 6-10 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers • Approximately 200 LF of 8 -inch sewer main on 101" Place NE from NE 187`h Street to NE 188`" Street. • Approximately 200 LF of 8 -inch sewer main between 18309 96`h Avenue NE and 18306 96`h Avenue NE. • Approximately 1,300 LF of 8 -inch sewer main on 96`h Avenue NE from NE 185`h to Main Street. • Approximately 600 LF of 8 -inch sewer main on 94`h Avenue NE from NE 194`h Place to NE 183`d Street. • Approximately 1,500 if of 8 -inch sewer main from 10516 East Riverside Drive to Lift Station 2. City of Bothell 6-11 Wastewater System Comprehensive Plan Update March 2018 CHAPTER 7 OPERATION AND MAINTENANCE PROGRAM INTRODUCTION This Chapter summarizes the operation and maintenance programs maintained by the City of Bothell to ensure performance and reliability of the wastewater collection system. The City operates and maintains four lift stations, approximately 1,900 linear feet of force main, and over 69 miles of gravity lines. The City does not own wastewater treatment facilities. All wastewater collected within the City is conveyed to the King County Department of Natural Resources (KCDNR) wastewater treatment facilities via 12 connections to KCDNR sewer interceptors. WASTEWATER SYSTEM ORGANIZATION The City of Bothell is a council -managed, first-class City, governed by seven elected City council members. The operation and maintenance of the wastewater system is performed by the Public Works Department. A complete organizational chart for the Public Works Department is presented in Figure 7-1. This chart illustrates the specific personnel positions. Routine wastewater utility work and assignments include, at a minimum, the following tasks: • Side sewer replacement and repair • Sewer gravity main inspections and repair • Wet well maintenance and repair • Pump station maintenance and repair • Gravity manhole inspection and repair OPERATOR CERTIFICATION There are currently no Washington State certification requirements for wastewater collection system operators. Although not required, sewer collection system operational staff are given training opportunities and have received certification from the Washington Wastewater Collection Personnel Association for a number of collection system activities. As of May 2017, three City employees currently hold a level of Wastewater Collection Specialist I (WWC-1). Two employees hold a level of Wastewater Collection Specialist 11 (WWC-2) and three employees hold a level of Wastewater Collection Specialist III (WWC-3). While not required by Washington State, the City encourages continuing education and training of its staff. City of Bothell 7-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers SYSTEM OPERATION AND CONTROL The locations of the major system components are shown on Figure 5-4. A description of the normal operation of each facility is given in Chapter 5. SCADA SYSTEM The wastewater utility has a Supervisory Control and Data Acquisition (SCADA) system with master control located at the City Shop. The system uses Wonderware software to provide a graphical user interface allowing the operator to view and generate reports with the data collected from 23 remote sites, as well as providing the ability to implement and modify automated programmed control strategies. The City's remote sites are equipped with Allen Bradley Compact Logix programmable logic controllers (PLCs) and Allen Bradley PanelView displays. Communication between the remote sites and the master control at the City Shop is cellular based. The SCADA system is also equipped with alarm software to allow staff to respond to conditions such as pump, motor, or power failures before a sewer spill occurs. Examples of the SCADA system's monitoring capabilities and alarms includes: Monitoring Capabilities • Pump run times • Generator run • Pump start/stop Alarms • Motion detector • Intrusion • High wet well • Low wet well • Pump fail • Generator fail • Power fail • Communication fail • Power restore • Communication restore • Operator in trouble panic button (dry well and above ground) • Automatic transfer switch fail • Phase fail 7-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update U � , ? 3 - Vf N M jZgZs Z �t oma oma g � W w ~ U w w w w w Q U u y 2 y VIm OW pQZ� QZN �QZ QZ = W f aJ z 98i O YZ U dZY Z� �Z� ZW O a W❑ 2 i O m U W Y Y m V1 U o f 39 N z3 za �nz¢ z¢ 0 a uo o oNlo go i; W W S KI N U m I U Q J w J O �o Ow QgZZZZU. �QgZZU.MJ3:: W m00W Y 3o ZNZpo W Ell- oi Y ap W QUU W W N w a � a pQpZ ice! U Q ZZ Z w Z Z N Q< N OU O U U Z Q a z U Z F Z W z5 W m O 2 W Z �L ZZmo Z= w m w U w Q LLJ a o (If Y��ry oo z� F- W W U W U O m W N w W� �jO �_ 3lJ NU wo jU ja io w� =3 iz� W SS m f.i Y oU w ¢O Kw w� Z'F ;pp oz- ¢z m Ow cW oWJW Uw N ?3� vwii vwii �6 ww N OWE WU �U N J OU Nr U U J J O v 2 d J �o w ¢�W �t+�w ¢U¢ O = iao�z o o= zmo �� m iN vwi��(¢'�z inia LL o 0 0w Uz O UW UN U M VI3W d'�v a" c3 w sKOmW d'w ¢OHO K a Za W a W a Z m V �Q�a= '444aU o U N U U w w O N U ? O�(a5 N 0 u Z a U w U W QQ K U N S W m0 c3� o m a' Z �a3 za,w„ aw o Nn w Nn W Z o Q M�u 9 u o N VI U Zw j2w U O L 4 a m a N N N O ~ ~ U Q u w 4 U w w W Z w � 2 � W U Gray & Osborne, Inc., Consulting Engineers PREVENTATIVE MAINTENANCE PROGRAM Planning for present and future maintenance of the wastewater system facilities is an important task, as important as planning gravity sewer main extensions, lift stations, force mains and other physical improvements. The maintenance effort must be continuous in order for the City to continue to fulfill its role as a wastewater collector in the future. The role of maintenance is to preserve the value of the physical infrastructure and ensure that the City can continue to provide a safe and reliable wastewater collection system. The most cost-effective method for maintaining a wastewater collection system is to provide a planned preventative maintenance (PM) program. Through a planned PM program, the optimum level of maintenance activities can be provided for the least total maintenance cost. The City's PM program involves defining the tasks to be performed, scheduling the frequency of each task, and then providing necessary staff to perform the task. For large and complex wastewater collection systems, the administration, scheduling, and record keeping generated by the PM program may be the greatest challenge. SCADA SYSTEM The SCADA system is monitored continuously to ensure that the lift stations are operating correctly. LIFT STATIONS The City visits and inspects each lift station two times a week. The wet wells are degreased every 2 months and pumped out every 2 years. The lift stations also have a number of alarms that are linked to the City's SCADA system that alert staff if a problem is occurring at a lift station. These alarms include high wet well level alarms, intrusion alarms, pump fail alarms, and others. FORCE MAINS/SIPONS The force mains and siphons are cleaned as necessary. The City's force mains are designed to achieve scouring velocities that self -clean under normal system operation. GRAVITY SEWER AND MANHOLES Manholes are inspected every two to three years for corrosion, leaks and other potential signs of deterioration. Gravity lines are jetted once every 2 to 3 years to clear them of debris, settled solids, and grease buildup. City of Bothell 7-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers FATS, OILS AND GREASE PROGRAM The City is in the process of developing a Fats, Oil, and Grease (FOG) program to decrease the amount of FOG entering the collection system. The FOG program includes the use of FOG collection devices and FOG discharge limits. The FOG program is discussed in more detail in the Wastewater O&M Manual. EMERGENCY RESPONSE PROGRAM Wastewater utilities have the responsibility to provide collection of wastewater in a reliable manner at all times. Therefore, utilities must reduce or eliminate the effects of natural disasters, accidents, and intentional acts. EMERGENCY PROCEDURES Though it is not possible to anticipate all potential disasters affecting the City's wastewater system, formulating procedures to manage and remedy several common emergencies is appropriate. The Emergency Operation Plan identifies the following key responsibilities for the Public Works Department concerning the wastewater collection system: • Maintain operation of all the sewage lift stations. • Determine that all the force mains and the siphon are discharging into their proper discharge manhole • Check all the gravity lines on steep slopes. • Sewer Overflow Response Plan (Appendix D) Wastewater System Emergency Contact List The City has an automatic phone dialer, which directs calls to staff at all times. The City designates a staff person who is responsible for off -hours calls and responds to SCADA alarms. Table 7-1 provides an emergency phone list, which is not comprehensive. The City also maintains a list of contact information for all field operations staff, available supplies, and emergency vendors and contractors. 7-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers TABLE 7-1 Emergency Phone List Agency/Group Phone Number Fire/Police/After Hours Contact 911 Public Works Department (425) 806-6800 Public Works Operations Center 425 488-0118 City Hall 425 806-6100 Snohomish County Health Department (425) 339-5250 (daytime/weekdays) King County Health Department (206) 296-4600 206 296-4932 (emergency spill) Washington State Department of Health Northwest Regional Office (253) 395-6750 (daytime/weekdays) (800) 521-0323 after hours/weekends) Washington State Department of Ecology Northwest Regional Office (425) 649-7000 (24-hour) 800 258-5990 (emergency spill) Federal Bureau of Investigation 206 622-0460 (Seattle) Gray & Osborne, Inc., Consulting Engineers (206) 284-0860 Publish Oncall 425 471-2475 Power Failure Various types of weather can cause loss of power, such as wind, lightning, freezing rain, and freezing snowstorms. In addition, power can be lost through traffic accidents. The City has a generator to maintain business functions and operation of the SCADA system master telemetry unit. The City has auxiliary power at all four of its stations to allow operation in the event of a power failure. The electrical service provider will be contacted to determine the length of the power outage. If an extended power outage is anticipated, customers will be notified of any anticipated problems that may occur. Severe Earthquake A severe earthquake can dramatically impact a collection system. Sewer pipes can be damaged, Table 7-2 presents potential effects of a severe earthquake on the wastewater system components. City of Bothell 7-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 7-2 Emergency Response Procedures for an Earthquake Wastewater System Component Potential Effects Recommended Actions Lift Station Loss of power for Check telemetry and dispatch extended durations can vactor truck and emergency cause station surcharge fuel as necessary and backup into residential side sewers Force Mains Broken force main Dispatch vactor truck and repair crew Gravity Sewer and Broken sewer pipe or Dispatch vactor truck and Manholes manhole I repair crew SAFETY PROCEDURES Work place hazards for this system are primarily limited to confined space entry, electrical equipment, health hazards associated with sewage, and traffic hazards associated with doing work in the right of way. Confined space issues are also a major concern for sewer collection system facilities, due to the potential for falls and the potential for lethal gasses in underground facilities such as manholes and wet wells. Operator training is an important component in maintaining a safe and reliable wastewater collection system. At a minimum, all personnel performing wastewater system related duties receive training in the following areas: • Confined space • Trenching and shoring • Traffic flagging • First Aid CUSTOMER COMPLAINT RESPONSE The City maintains a log of public complaints with respect to the wastewater system. Depending on the nature of the complaint, a staff member may be contacted by portable radio or mobile phone to respond immediately if a public health issue is apparent. If not of immediate urgency, a work order will be completed and staff will respond as soon as feasible. 7-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers SEWER SYSTEM STAFFING REQUIREMENTS Operating budgets must reflect adequate staffing levels needed to ensure an adequate level of service and maintain a reliable and dependable system. The costs of inadequate maintenance can result in the premature need for facility rehabilitation and reconstruction. Inadequate maintenance can also increase the likelihood for Sanitary Sewer Overflows (SSOs) through reduced conveyance capacities which can result in personal property damages, public health issues, and environmental damages. Maintenance management principles should be applied to determine maintenance frequencies and the levels of maintenance required to ensure reliability and low life -cycle cost. The future regulations being implemented through CMOM will further emphasize the need for adequate staffing to meet this performance criteria and reduce the likelihood of SSOs. This section develops the recommended budget, staffing and equipment needs for City crews to inspect, maintain City wastewater facilities and perform the City's preventative maintenance program. The indirect costs for the management of the maintenance program are also an element of operations that needs to be taken into account. The preventative maintenance program developed in this chapter is designed to provide those maintenance functions at the frequencies necessary to ensure the various wastewater system components function as intended. This section provides the basis for future staffing by attempting to identify the required effort to perform the City's preventative maintenance program. The analytical method used is summarized in several steps: • Inventory: Quantify the wastewater system infrastructure components to be maintained and/or inspected. • Level of Service: Define the inspection and maintenance activities and intervals applicable to component of the system inventory. • Unit Cost: Define the crew and equipment configurations and corresponding hourly costs to efficiently and safely perform each inspection or maintenance activity. • Productivity: Estimate the amount of time required for the crew to perform the specified inspection or maintenance. • Preventative Maintenance Budget: Calculate annual labor, equipment and contracted costs to provide the defined level of service. The estimated cost for a preventative maintenance program is reviewed in conjunction with other program costs. The level of service is then adjusted, based on maintenance priorities, to target efforts within available funding. City of Bothell 7_7 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers EXISTING PROGRAM The City is responsible for maintaining wastewater facilities located on City -owned property and on private property for which the City has an easement. The City is responsible for line cleaning, lift station maintenance, manhole maintenance, and inspection services. City -Owned Facilities An inventory of City -owned wastewater facilities is summarized in Table 7-3. This inventory includes facilities constructed within the City service area. The facilities were constructed over a broad time frame and under a variety of design and construction standards. TABLE 7-3 Publicly -Owned Wastewater Infrastructure Facility Inventory Manholes 1,818 Conveyance Piping Network linear feet 341,375 Cleanouts 713 Lift Stations 4 Private Facilities There is extensive amount of wastewater infrastructure within the City that is situated on private property parcels and is the responsibility of the respective owners to maintain. The City estimates there is approximately 25,000 linear feet of private sewer main located within the City limits. The owners of facilities served include homeowner associations as well as commercial properties. While maintenance of these facilities is the property owner's responsibility, their proper function is important to protection of downstream properties and resources. It is the City's responsibility to periodically inspect the condition of private owned discharge facilities and to enforce their maintenance. The City has implemented a number of programs designed to provide public outreach and education for maintenance of these private systems. These types of programs are typically operated under a discharge approval process and through proactive preventative maintenance programs. These programs include, but are not limited to: • Industrial Waste Discharge Approval Processes • Backwater Valve Installation Program • Inflow and Infiltration Program • Illicit Connection Removal Program 7-8 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers Root Intrusion/Treatment Program Rodent Control Program MAINTENANCE PLANNING CRITERIA Table 7-4 references the maintenance standards that are applicable to each maintenance program. Table 7-4 also indicates the expected field crew configuration, in terms of number of staff and equipment type that would be used for the various facility maintenance activities. TABLE 7-4 Inspection and Maintenance Planning Criteria STAFFING LEVELS As of February 2018, the City currently has 4.8 full time employees (FTE) dedicated to performing sewer operation and maintenance. Table 7-5 illustrates the required labor to achieve the City's preventative maintenance program based on the goals presented in Table 7-4. City of Bothell 7-9 Wastewater System Comprehensive Plan Update March 2018 Current Crew Configuration Inspection and Inspection and Maintenance Maintenance Required Task Interval Interval Goal Staff Required Equipment Manhole Inspection 5 years 3 years 3 Eductor, service truck Pipelines CCTV Inspection Inspect whole system Eductor, service truck 3 years 3 every 3 years Pipeline Cleaning (pipeline 2 days/week, Clean 3 days/week, schedule) whole system Clean whole system 3 Eductor, service truck Every 5 years Every 3 years Pump Station Maintenance Twice Weekly Twice Weekly 2 Eductor, service truck Manhole Program (repair manholes/channels and lday/week lday/week 1-2 Flatbed truck access improvements) FOG Program 0 1 days/week I Service truck Backwater Valve Installation Dump truck, service Program 0 5 per year 4 truck, backhoe, shoring Root and Rodent control 6 months 2 days/month 1 Service truck Inflow and Infiltration program (smoke and die As needed 1 day/week 2 Service Truck testing) Utility Locates 3-5 days/week 5 days/week I Service Truck Discharge approval review 20 per year 20 per year I None process STAFFING LEVELS As of February 2018, the City currently has 4.8 full time employees (FTE) dedicated to performing sewer operation and maintenance. Table 7-5 illustrates the required labor to achieve the City's preventative maintenance program based on the goals presented in Table 7-4. City of Bothell 7-9 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers TABLE 7-5 Estimated Staffing Levels Task Maintenance Interval Goal Required Staff Total Annual Staff Hours Manhole Program (Repair and Inspect Manholes/Channels and Access Improvements)() Inspect all manholes every3 years, repair 10 manholes per year 3 967 Pipelines CCTV Inspection (2) 2 days/week 3 2,496 Pipeline Cleaning (Pipeline Schedule)(3) 3 days/week, Clean whole system every 3 years 3 1,522 Lift Station Maintenance (4) Twice Weekly 2 1,248 FOG Program 1 da /week 1 416 Backwater Valve Installation Program (5) 5 per year 4 160 Root and Rodent Control 2 days month 1 192 Inflow and Infiltration program (Smoke and Dye Testing) 1 day/ eek 2 832 Utility Locates (6) 5 days/week 1 560 Discharge Approval Review Process(') 20 per year 1 40 Unscheduled Maintenance (8) As required 2 416 Total Hours 8,849 Total FTE(9) 5.0 (1) Based on an inspection rate of 20 manholes per day and a repair rate of one manhole per day. (2) Based on a rate of 1,250 linear feet per day. (3) Based on a rate of 1,800 linear feet per day. (4) Based on a rate of 1.5 hours per lift station. (5) Based on a rate of 1 day per backwater valve installation. (6) Based on a rate of 70 staff days per year. (7) Based on a rate of 2 hours per discharge review. (8) Based on a rate of 4 hours per week. (9) Based on 220 working days per FTE per year. Table 7-5 illustrates that the City needs approximately 5.0 FTE to implement its proposed preventative maintenance program. The City is currently working on projects that may allow the elimination of one of the City's lift stations, which could reduce the City's preventative maintenance by 312 hours, or 0.18 FTE. With 4.8 FTE currently performing sewer system operation and maintenance, the City will need additional staffing to perform its preventative maintenance program and achieve its operation and maintenance goals. 7-10 City of Bothell March 2018 Wastewater System Comprehensive Plan Update CHAPTER 8 CAPITAL IMPROVEMENT PLAN INTRODUCTION This chapter presents a 6 -year Capital Improvement Plan (CIP) in accordance with the requirements of WAC 173-240 as well as a 20 -year CIP. Wastewater capital improvements have been scheduled and prioritized on the basis of growth, regulatory requirements, component reliability, system benefit, and cost. For the proposed projects identified in this chapter, more detailed project descriptions and preliminary project cost estimates are presented in Appendix F. A wastewater base map illustrating the locations of the proposed improvement projects is included in the jacket of the Plan. Other capital improvement projects may arise in the future that are not identified as part of the City's CIP presented in this chapter. Such projects may be deemed necessary for remedying an emergency situation, accommodating improvements proposed by other agencies, or addressing unforeseen problems with the City's wastewater system. Due to budgetary constraints, the construction of these projects may require that the proposed completion date for projects in the CIP be rescheduled. When new information becomes available, the City retains the flexibility to reschedule, add to, or delete proposed projects and to expand or reduce the scope of the projects, as best determined by the City's Public Works Department. Additionally, future planning efforts by the City or King County may affect land use zoning and service requirements within the City. Developments may create streets or provide alignments and locations of facilities that are different than shown on the Plan. Each capital improvement project will be reevaluated to consider the most recent planning efforts as the proposed completion date for the project approaches. PROPOSED SYSTEM IMPROVEMENTS The proposed system improvements in the CIP are based on projects identified in the collection system hydraulic model, problematic gravity mains and lift station issues identified by City operational staff, on-going programs intended to reduce infiltration and inflow, and projects previously scheduled by the City. Each project cost estimate includes 30 percent design and engineering, construction with a 20 percent contingency, and 10.0 percent sales tax. All project costs are based on 2018 dollars, with no adjustments made for inflation in future years. The recommended CIP projects are summarized below using the following abbreviations: GV — Gravity sewer main projects G — General system projects and planning projects LS — Lift Station improvement projects City of Bothell 8-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers All projects from 2019 through 2024 are listed and described. The year shown for each project is the anticipated year of construction. GRAVITY SYSTEM IMPROVEMENTS The gravity system improvements identified are designed to increase capacity, bypass problematic gravity mains to reduce the need for sewer system flushing, and to improve access to the mains for operational staff. For budgeting purposes, the cost estimates shown here assume open trench construction in existing right-of-way. The City may be able to realize cost savings by using trenchless technologies such as pipe bursting. The City should investigate these alternative construction methods during the design phase of these projects. GV -1: 1001h Avenue NE 10 -Inch Gravity Sewer Replacement (2019) The City plans to replace approximately 350 LF of 10 -inch gravity sewer main that will parallel the existing sewer installed along l 001h Avenue NE, between NE 202"a Street and NE 20151 Street. The existing sewer will be abandoned. This project will correct an existing condition deficiency. Estimated Project Cost: $241,000 GV -2: NE 190" Street, NE 189"' Place, NE 1871" Street, 88th Avenue NE, and 89th Avenue NE Gravity Sewer Installation (2022) The City plans to construct the following improvements: • Approximately 300 LF of 8 -inch sewer installed along NE 1901h Street from 881h Place NE to 891h Avenue NE. • Approximately 508 LF of 8 -inch sewer installed on 881h Avenue NE. • Approximately 220 LF of 8 -inch sewer installed on NE 189' Place. • Approximately 480 LF of 8 -inch sewer installed on 1871h Avenue NE. • Transfer 5 residential connections to the existing 8 -inch sewer on 891h Avenue NE. The existing mains are in easements that are difficult to access for maintenance. The new sewer lines will provide the City with better access to the system for maintenance. The City will be analyzing trenchless alternatives to potentially reduce costs for this project. Estimated Project Cost: $709,000 8-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers GV -3: Beardslee Place, Sunrise Drive and Valley View Street 8 -Inch Gravity Sewer Installation (2021) The City plans construct approximately 400 LF of 8 -inch sewer main on Beardslee Place, approximately 1,070 LF of 8 -inch sewer on Sunrise Drive, and approximately 470 LF of 8 -inch sewer on Valley View Street in order to provide better access for maintenance. The existing mains are in easements that are difficult to access for maintenance. Estimated Project Cost: $902,000 GV -4: NE 196" Street and SR 52710 -Inch Gravity Sewer Replacement (2019) The City plans to lower and replace approximately 250 LF of 10 -inch gravity sewer main along NE 196`" Street at the intersection of NE 196`" Street and SR 527 in order to increase the slope of the gravity main to increase the capacity. The project will correct an existing deficiency. Estimated Project Cost: $159,000 GV -5: NE 186" Street and 98`h Avenue NE Gravity 10 -Inch Gravity Sewer Replacement and Waynita Drive 12 -Inch Gravity Sewer Replacement (2018) The City plans to replace approximately 430 LF of gravity sewer main at the following locations: • Approximately 310 LF of 10 -inch gravity sewer main along 98th Avenue NE between NE 185`h Street and NE 188th Street in order to increase the slope of the gravity main to increase capacity. • Approximately 120 LF of existing 8 -inch gravity sewer main along 167th west of Waynita Drive with 12 -inch main in order to increase capacity and prevent surcharging. Estimated Project Cost: $287,000 GV -6: SR 522 18 -Inch Gravity Sewer Replacement (2021) The City plans to replace approximately 250 LF of 12 -inch gravity sewer along SR 522 near 102nd Avenue NE with 18 -inch gravity sewer. This project will correct an existing capacity deficiency. Estimated Project Cost: $200,000 City of Bothell 8-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers GV -7: Manhole Grade Adjustments (Overlay Program) and Small Works Improvements (2019-2038) The City has budgeted approximately $200,000 annually dedicated to adjusting manhole rings and covers do to grade changes and to address other small works sewer improvements. These projects will take place in conjunction with City-wide projects and street overlay projects. Estimated Annual Project Cost: $250,000 Total 6 -Year Project Cost: $1,500,000 Total 20 Year Project Cost: $5,000,000 GV -8: Annual 1/I Improvements (2019-2038) The City has budgeted approximately $100,000 annually dedicated to replacing pipelines and repairing manholes with 1/1 problems. The areas to be improved will be identified through smoke testing, flow monitoring and TV inspection (see project G-1) Estimated Annual Cost: $100,000 Total 6 -Year Project Cost: $600,000 Total 20 Year Project Cost: $2,000,000 GV -9: Canyon Creek 8 -Inch Bypass Sewer and 126" Avenue 10 -Inch Gravity Sewer Replacement (2023) The City plans to construct approximately 900 LF of 8 -inch gravity sewer at the following locations: • Installation of approximately 300 LF on 126`" Avenue NE from NE 187`" Street to approximately NE 188"' Street in order to bypass a problematic gravity main. Replace approximately 600 LF of 8 -inch gravity sewer along 126th Avenue NE between NE 180`" Street and NE 181 st Street with 10 -inch gravity sewer. This project will correct an existing capacity deficiency. Estimated Project Cost: $429,000 GV -10: NE 175" Street 21 -Inch Gravity Sewer Replacement (2022) The City plans to replace approximately 400 LF of 21 -inch gravity sewer on NE 175th Street from 113th Avenue NE to approximately 111 th Avenue NE in order to replace a sagging main. Estimated Project Cost: $325,000 8-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers GV -11: NE 101" Place NE 8 -Inch Gravity Sewer Replacement (2019) The City plans to replace approximately 650 LF of 8 -inch gravity sewer main at the following locations: Approximately 200 LF of 8 -inch sewer main on 1015 Place NE at NE 189" Approximately 250 LF of 8 -inch sewer main on NE 189" at 1015 Place NE. Approximately 200 LF of 8 -inch sewer main on 101St Place NE at NE 188`" Street. This project will correct existing condition deficiencies. Estimated Project Cost: $312,000 GV -12: 96" Avenue NE 8 -Inch Gravity Sewer Main Replacement (2019) The City plans to replace approximately 1,500 LF of 8 -inch gravity sewer main on 96th Avenue NE from NE 182nd Street to NE 185`" Street. This project will correct existing deficiencies in the main including, cracks, swells and roots in the main. This project may be a candidate for rehabilitation via cure -in-place pipe construction, which would provide a cost savings. Estimated Project Cost: $736,000 GV -13: 94" Avenue NE 8 -Inch Gravity Sewer Replacement (2019) The City plans to replace approximately 600 LF of 8 -inch gravity sewer on NE 94th Avenue from NE 184" Place to NE 183`d Street. This project will correct an existing condition deficiency. Estimated Project Cost: $290,000 GV -14: East Riverside Drive 8 -Inch Gravity Sewer Replacement (2023) The City plans to replace approximately 1,500 LF of 8 -inch gravity sewer adjacent to East Riverside Drive from 10516 East Riverside Drive to Lift Station 2. Estimated Project Cost: $697,000 City of Bothell 8-5 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers GV -15: Lift Station 4 Abandonment (2021) Built in 1984, Lift Station 4 serves approximately 23 homes in the Camden Crest Basin. The station has reached the end of its useful replacement parts have become difficult for City staff to obtain. The City is considering alternatives to address the problem. The first option is to replace the existing vacuum pumps with submersible pumps. The second option that the City is considering is to demolish the existing lift station and conveying the Camden Crest Basin flows by gravity to the North Creek Heights Basin. The estimated project cost will be adjusted depending on the alternative selected by the City. Estimated Project Cost: $907,000 GV -16: Downtown Revitalization NE 185M Street Reconstruction (2019) This project will replace 8 -inch gravity sewer along NE 185" Street from Bothell Way to Beardslee Boulevard. The sewer work is a part of the City's Transportation Improvement Project which will improve and widen NE 185`" Street. Estimated Project Cost: $416,000 GENERAL SYSTEM CAPITAL IMPROVEMENTS G-1: Infiltration and Inflow Studies (2019-2038) The City is budgeting $20,000 annually to identify areas of the system that have high 1/1 rates. This would include smoke testing, TV inspection and flow monitoring. Manholes and mains identified having high 1/1 rates through these studies would be replaced/rehabilitated as necessary through project G-8. Estimated Annual Project Cost: $20,000 Total 6 Year Project Cost: $120,000 Total 20 Year Project Cost: $400,000 G-2: Wastewater Comprehensive Plan (2024) The City plans to update its Wastewater Comprehensive Plan every 6 years. Estimated Project Cost: $80,000 8-6 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers G-3: Fats, Oils, and Grease (FOG) Study (2019) Fats, Oils, and Grease (FOG) is a major source of pipe blockages and sewage backups for the City. The City is budgeting $50,000 for a study that will determine the best approach to address the problem and the operation and maintenance costs associated with it. Estimated Project Cost: $50,000 LIFT STATION CAPITAL IMPROVEMENTS The following lift station projects are designed to improve operation of the existing lift station. LS -1: Lift Station 1 Improvements (2020) Lift Station 1 was originally built in 1990. In 2008, the two main pumps at the station were replaced and an additional bypass vault and pump was added. The station has limited wet well storage and no space at its current location to increase wet well capacity. The City is considering alternatives to alleviate the condition these options include: • Construct a siphon between the existing lift station and the King County Interceptor on the north side of the Sammamish River; abandon existing lift station. • Construct a tightline that allows a portion of the Waynita basin to be served by gravity and the remaining portion to be served by the existing lift station. • Relocate lift station to Wayne Golf Course to provide for more wet well storage. • Add storage capacity to the existing station. The estimated project cost will be adjusted depending on the alternative selected. Estimated Project Cost: $619,000 DEVELOPER EXTENSION PROJECTS The City is currently aware of a few projects that will be designed, constructed, and financed by developers. The map in the back sleeve of the Plan provides the locations and minimum sizes for these developer extension projects. Changes to the projects may occur in the future, such as land use and zoning changes that allow higher densities and may require larger sewer mains than those shown on the map. City of Bothell 8-7 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers The developer extension projects shown on the map are not intended to show the exact route for the gravity sewers, as these will be determined by the developer and the City through the developer review process. The map is only intended to illustrate the minimum required trunk sizes for these projects, and the manhole in the existing system that was modeled to accept flows from these projects. The modeled manhole used to represent future development was established as far upstream as possible to be as conservative as possible, but may not represent the best point of connection into the collection system based on The City reserves the right to reexamine and remodel specific developments as part of the developer extension review process. CAPITAL IMPROVEMENTS PLAN SCHEDULE Table 8-1 provides a summary of each capital improvement project and the proposed schedule for implementation. Table 8-2 provides a schedule recommending the amount each project should be financed each year. Several projects span multiple years. The District can reschedule its capital improvement projects as needed to accommodate unanticipated projects in the future. 8-8 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers TABLE 8-1 Capital Improvement Project Summary Project Year to be Total Estimated Number Project Title Completed Cose" GV -1 100'" Avenue NE 10 -inch Gravity Sewer Re lacement 2019 $241,000 GV -2 NE 190`" Street, NE 189`" Place, NE 187`" Street, 88`h Avenue NE, and 891" Avenue NE Gravity Sewer 2022 $709,000 Installation GV -3 Beardslee Place, Sunrise Drive and Valley View Street 8 -inch Gravity Sewer Installation 2021 $902,000 GV -4 NE 1915' Street and SR 527 10 -inch Gravity Sewer Replacement 2019 $159,000 GV -5 NE 186'" Street and 98'" Avenue NE Gravity 10 -Inch Gravity Sewer Replacement 2018 $287,000 GV -6 SR 522 18 -Inch Gravity Sewer Replacement 2021 $200,000 GV -7 Manhole Grade Adjustments (Overlay Program) and Small Works Improvements 2019-2038 $5,000,000 GV -8 Annual 1/1 Improvements 2019-2038 $2,000,000 GV -9 Canyon Creek 8 -Inch Bypass Sewer and 126'"Avenue 10 -Inch Gravity Sewer Replacement 2023 $429,000 GV -10 NE 175''' Street 21 -Inch Gravity Sewer Replacement 2022 $325,000 GV -11 NE 101' Place NE 8 -Inch Gravity Sewer Re lacement 2019 $312,000 GV -12 96'" Avenue NE 8 -Inch Gravity Sewer Main Replace ent 2019 $736,000 GV -13 94`" Avenue NE 8 -Inch Gravity Sewer Replacement 2019 $290,000 GV -14 East Riverside Drive to Lift Station 2 Gravity Sewer Replacement 2023 $697,000 GV -15 Lift Station 4 Abandonment 2021 $907,000 GV -16 Downtown Revitalization NE 185`" Street Reconstruction 2019 $416,000 G-1 Infiltration and Inflow Studies 2019-2038 $400,000 G-2 Wastewater Comprehensive Plan 2024 $80,000 G-3 Fats, Oils, and Grease FOG Study 2019 $50,000 LS -1 Lift Station 1 Improvements 2020 $619,000 Total $14,759,000 (1) rroject Costs are in 2018 dollars. Construction Cost Index = 5932 (ENR, February 2018). City of Bothell 8-9 Wastewater System Comprehensive Plan Update March 2018 �Yj O ^O U U 0 s. PLO � 00 O O � o O N F 00 N zo in w ff3 bmf? U U O O ti eS O O C N O O �Yj O O O c`1 O O O N 00 N in ff3 bmf? O O O O N O O N O N 00 kn N r,n N 6R ff3 ff3 kn Ff3 O O O O M O O O O O O O O `p NEn- b�A 6�F?- �1 •--� O O O O O N O O O O O O O O O O N O v� O N N an 0 0 0 0 0 0 o 0 0 0 o 0 O o CD o cam? o o r-- o � N O O n O a, N N fes? ffl sR Eiy � o 0 0 O 0 0 0 0 0 0 ago N H9 N V) by Ei3 O O O O O O O O O O O O O O O O O O O O C O O O O O O O O N � � oo ON NES-- rl ffi Go� Eoo� fig ff3 64 bra (A9 � O O O O O O D p 0 0 0 0 0 0 0 0 0 0 0 0 O 0 o s. O o O 0 O 0 O 0 O 0 O 0 O O O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O 0 O O O 0 0. 0 �a;cSo7�000C', ri�oo�t'-�o 0 CD 0 �� CJ O O Ln 00 O p N N CZ) -� N [� a, N N NES r4n Ef3 Ln b9 bH co ) H ff3 S9 bn 64 &,4 be 64 b9 ff3 � o »»>>>>> >>vc�C7 zz A L;~ CHAPTER 9 FINANCIAL PROGRAM INTRODUCTION This chapter presents the financial program for the City's wastewater utility. Through the financial program the City's Public Works Department is assured that the necessary elements (maintenance, operations, capital projects and inspection programs) are carried out to insure the continued viability of the utility and that an uninterrupted and desired level of service is maintained. This is key in establishing wastewater rates and other charges that reflect equitable and actual costs of providing wastewater service to the City. Rate studies are an important tool used to maintain rates at a level needed to fund the Utility. The City conducted a water and sewer rate study in 2016. Rate increases were recommended to cover increased operational costs due to cost of living, KCDNR treatment costs, a new maintenance and operations facility and a $400,000 annual Capital Improvement Program. Only a portion of the recommended rate increases were implemented. Just as other capital improvement projects may arise, be rescheduled or deleted, a City's financial plan needs to be flexible enough to accommodate changes in the anticipated program. The City's Wastewater Financial Plan will be reviewed annually to consider the most recent planning efforts, the current inflation/construction cost increases, and the KCDNR treatment rates. The analysis is based on a starting point beginning in 2018 and continuing through 2024. On the expense side, it includes the capital program as presented in the City-wide Capital Facilities Program (CFP), the reserves as identified during the development of the CFP, increases in the maintenance level of service (addition of one FTE), KCDNR treatment costs, and depreciation costs. On the revenue side, it includes utility billing revenues, depreciation, facility connection charges, revenue bonds, loans and grants. EXISTING SERVICE RATES AND CHARGES The existing service rates and charges were established by City Ordinance Nos. 2235 and 2248 and City Resolution No. 1370. The resolutions specify base rate, volume rate, and system development charge. The City ordinances and resolutions are provided in Appendix G. SEWER RATES Monthly base rates and volume rates were established by City Ordinance Nos. 2235 and 2248, passed in 2017 and 2018, respectively. Table 9-1 summarizes the bimonthly base rate, which is based on location and customer class. The volume rate for single family residences is based on the annualized winter -average water usage (AWWU) from the prior year which exceeds 200 cubic feet per month. The winter period for this purpose is City of Bothell 9-1 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers defined as November 1" through June 30". The volume rate for commercial, schools and multi -unit residences is based on water consumption which exceeds 750 cubic feet in any month. TABLE 9-1 Existing Sewer Base Rate (City Ordinances Nos. 2235 and 2248) (1) The volume rate is charged per 100 cubic feet of excess. (2) During months when school is not in session for the entire month, the bimonthly charge is $315.78 per school. (3) Calculated by applying a 25 percent discount to Single Family Residential rates (4) Calculated by applying a 25 percent surcharge to rates inside city limits per City Ordinance No. 2105, passed in 2012. SYSTEM DEVELOPMENT CHARGE System development charges were revised by City Resolution No. 1370, passed in 2017. The charge amount is based upon the use of the property for which the sewer service is applied, according to the schedule in Table 9-2. The charge is imposed on new customers requesting sewer service. TABLE 9-2 2018 System Development Charge (City Resolution No. 1370) Customer Classification Year 2018 Rates Sewer Main Connection Charge Inside City Limits Bimonthly Base Rate Volume Rate(t) Single -Family Residential $120.10 per dwelling unit $3.98 per CCF Senior Low Income Residential(3) $90.08 per dwelling unit $2.99 per CCF Multi -Family Residential $157.91 per dwelling unit $10.12 per CCF Schools $157.91(2) pperschool $10.12 per CCF per building Commercial $157.91 per occupancy $10.12 per CCF Outside City Limits Bimonthly Base Rate(t) Volume Rate (4) Single -Family Residential $150.13 per dwelling unit $4.98 per CCF Senior Low Income Residential $112.60 per dwelling unit $0 Multi -Family Residential $197.38 perdwellin unit $12.65 perCCF Schools $197.38 per school $12.65 per CCF per building Commercial $197.38 per occupancy $12.65 per CCF (1) The volume rate is charged per 100 cubic feet of excess. (2) During months when school is not in session for the entire month, the bimonthly charge is $315.78 per school. (3) Calculated by applying a 25 percent discount to Single Family Residential rates (4) Calculated by applying a 25 percent surcharge to rates inside city limits per City Ordinance No. 2105, passed in 2012. SYSTEM DEVELOPMENT CHARGE System development charges were revised by City Resolution No. 1370, passed in 2017. The charge amount is based upon the use of the property for which the sewer service is applied, according to the schedule in Table 9-2. The charge is imposed on new customers requesting sewer service. TABLE 9-2 2018 System Development Charge (City Resolution No. 1370) Customer Classification Unit Sewer Main Connection Charge Single -Family Residential dwelling unit $2,941.00 Multi -Family Residential per ERU $2,941.00 Commercial per ERU $2,941.00 School per ERU $2,941.00 All Other I per ERU $2,941.00 9-2 City of Bothell March 2018 Wastewater System Comprehensive Plan Update Gray & Osborne, Inc., Consulting Engineers FINANCIAL ANALYSIS The Sanitary Sewer Utility operates as a separate enterprise fund. The utility's revenues and expenditures are accounted for independent of other utilities and the general fund. The Financial Consulting Solutions Group (FCSG) performed a rate study update in 2016 for the City's sewer utility, which included an evaluation of appropriate reserve levels and the determination of an equitable breakdown of existing reserves between operating and capital funds. The utility should accumulate monies over time for planned capital improvement projects and also provide a contingency for unexpected capital funding needs. Recently the City in developing its Capital Facilities Plan (CFP) set forth (in accordance with the FCSG 2016 Rate Study) the following financial strategy was incorporated into this Plan for the sewer utility: 30 to 60 -day operating reserves shall be maintained in the Sewer Utility Fund. • Capital reserves of 2 percent of fixed assets shall be maintained in each utility fund. • Capital reserves of 10 percent of the average annual capital improvement projects shall be maintained in each utility fund. For the Sanitary Sewer Utility this means the following reserve values for 2018: Capital Emergency Reserve = $235,000 Operating Reserve = $519,439 Capital Reserve = $121,490 The projected beginning fund balance for January 2018 has had these reserves identified and accounted for. The following increases in expenses have been anticipated in future years: 5 percent cost of living increase in 2019 and 2021 for O&M Costs. Net growth in sewer service of 0.5 percent (1 percent growth rate minus 0.5 percent for water conservation). Known KCDNR Treatment increases: 2019-5.2% 2021-2023 — 2.6% City of Bothell 9-3 Wastewater System Comprehensive Plan Update March 2018 Gray & Osborne, Inc., Consulting Engineers The analysis assumes that the rates will be increased by 5 percent annually to accommodate the above increases. Table 9-3 provides the revenues and expenses for the planning period. It is important to note this analysis shows that in some years the City will have a negative net cash flow, the minimum end balance for the 6 -year planning period is $1.4 million. The City can mitigate this through a variety of options including increasing facility charges and pursuing alternative funding sources. Appendix H provides a description of several funding source alternatives that are available to the City for the financing of projects in the CIP. 9-4 City of Bothell March 2018 Wastewater System Comprehensive Plan Update i d O M O M D, oll M O 00 00 l� d N O� N M M O\ N 01 '00 '' • M O to 000 00 000^ N p O \o �p M O M 0 t � � O" N 040 r 'o O t^ V> d N r en "o N 0� '.y N M N 69 69 0 � 69 O p oNo m r- (` l� M N tr- N d� O Cn Cn 00 b9 69 69 69 G 69 69 69 69 � 69 69 69 606 64 69 � M O O oo M M oo O O tn t` M a1 M O O 00 00 l� d N O O� 00 N 00 O N �O O1 N to M 00 N N kn O cn N M CA "Zr kK N r- \,O kf) _ r j N M M N N t` 69 ,c 69 r- 69 �O N Ml� 6s t` r-� � N d' N 69 t` 69 00 O d� kA d� O^ 611) 669 66s 4 69 69 69 69 b09 69 46S � 46S64 6~6 O O 00 M00 O O O kn M ON O� O M O 00 000 N t` N O O O O 00 � d -- N O N O O �D 00 O O t` V^ N C) �o �,� O -� M M O; t� � O p 00 N O tn O v1 � N_ O� \0 N r1 O M O N in r -"o O O O in t` H N N M t- 'K00 t` n r- N_ � d N ,n N t` 00 d N p v^ fV d' �D M R O� — � " IT 696969 00 69��� �696969��bN96�9 _ � ;;641 rA 6- EA�69 b9 ^� 00 00 M 00 0o O O kn N '"� M ON O1 M O O 00 N O O 0 N O O� 00 N O O O� [� M 00 M O r- W)� N O " O O l^ N O �! N C) r- t/ t NO O N 00 M N M O p N v1 N O .� tn r, t- 0 M O1 m� ,t T " �o M � N r t.- d N' - t` o� N �n N rl O\ t` M O d' V) � to 69���� 000 696969 46969 ��6969 C460S (14 4 ..6N969 69 O O O kn '0n o^ O O O M d O kn O 00 to t` O O 00 �o �o N r M M kn H Rn M l^ Cn t` N p O O [� r O N Cn M d^ Cn N- to r -O O� l a, v j l ^ O O M" M H N 00 ^" en N " 'n N t- A 00 Cn d' t` M O_ N N r- �rsrs r- N r-�oq O N_ N 00 of _M t V i 6N9���� 6�9669r��6969 rs-1 6N96N4 rAy O N O M "!T O � kn r- �o N In kn �o V-.4 = r- 00w rl a O o kn O M W CA �p tn p N O t` kn 00 00 O O N M 00 0',N Cr, ,r r 00 N � Cn M k N tl- O N O d in kn N 00 �p ON (� Ittn m N 69��69 � b96969�6d9696H _O ��60S60 0Go� 61 � 69609 O 00 O �o H 00 M ij d O M .4 O'\ M M O C kn "o 00 O O N 01 O^ M \,O p N O V k ' �n O kn ON p d M to N ^ �p O O d N 00 v O O �p a1 O O N N N M M 00 N 00 N M M 66969�69� 6696696�969��69 69 69696�/969696�i966696696Mr9 � N a. a w U U o cz r UrA c o 3 o o cd °'ate° c o s a� o > 7i° > > W ° cz Q i C y cd co m C 3 0 V U _ y v� U U Q = 0 �, � bc R ., N o O `� _ �' i i i,3 a F" � .� 'A " waQQI o E- 4) C# �F C L vjun U)E"UZ1-0Fyz � h d 6� APPENDIX A WASTEWATER AGREEMENTS E ;acufed in .._/Q_ cour,.terpzrts of Which this is counterpart AGREEMENT FOR SEWAGE DISPOSAL THIS AGREEMENT made and executed this � % ��day of -----.co 2961, between the CITY of BOTHELL, a municipal corporation of the State of Washington, herein- after referred to as the "City" and the MUNICIPALITY OF METROPOLITAN SEATTLE, a municipal corporation of the State } i of Washington, hereinafter referred to as "Metro", W I T N E S S E T H WHEREAS, the public health, welfare and safety of the residents of the City and the residents of the metro- politan area require the elimination of existing sources of water pollutipn and the preservation of the fresh and salt water resources of the area; and WHEREAS, growth of population, topographic con- ditions and preservation of water resources require that certain major sewage disposal works be constructed and operated and that the cities and special districts within the metropolitan area dispose of their sewage in accordance with a comprehensive plan for the metropolitan area; and WHEREAS, Metro was established by vote of the people in the metropolitan area pursuant to Chapter 35.58 RCW for the purpose of performing the function of metropolitan sewage disposal, has adopted a comprehensive plan for the disposal of sewage from the metropolitan area and intends to develop the facilities needed to carry out such plan and to issue revenue bonds to finance such development; and r WHEREAS, to carry out the purposes of Metro and perform its authorized function and to provide for the disposal of sew- age from the City into the metropolitan sewage disposal system it is necessary that a contract be now entered into establishing certain rights and duties of the parties incident thereto; NOW, THEREFORE, in consideration of the mutual covenants contained herein, IT IS HEREBY AGREED as follows: Section 1, Definition of Terms. The following words and phrases used in this contract shall have the meanings here- inafter set forth in this sections (a) The words °,comprehensive Plan" shall mean the compre- hensive Sewage Disposal Plan for the metropolitan area adopted in Resolution No.. 23 of the Municipality of Metropolitan Seattle and as same may be hereafter amended from time to gime in the manner required by law. (b) The words "Metropolitan Sewerage System" shall mean all of the facilities to be constructed, acquired or used by Metro as a part of the Comprehensive Plan. The Metropolitan Sewerage system shall generally include sewage disposal facilities with capacity to receive sewage from natural drainage areas of approximately one thousand acres or more. The Metropolitan Sewerage system shall thus include trunk or interceptor sewer facilities extending to a point within each tributary, and natural drainage area, where not more than one thousand acres remain to be served beyond the upper terminus of such trunk or interceptor sewer. 2. (c) The words "Local Sewerage Facilities" shall mean all facilities owned or operated by the Participant for the local collection of sewage to be delivered to the Metropolitan Sewerage System. (d) The words "Metropolitan Area" shall mean the area con- tained within the boundaries of the Municipality of Metropolitan Seattle as now or hereafter constituted. (e) The word "Participant" shall mean each city, town, 1 county, sewer district, municipal corporation, person, firm or private corporation which shall dispose of any portion of its sanitary sewage into the Metropolitan Sewerage System and shall have entered into a contract with Metro providing for such disposal. (f) The words "Residential Customer" shall mean a single family residence billed by a Participant for sewerage charges. Section 2. Delivery and Acceptance of Sewage. From and after July 1, 1962, the City shall deliver to the Metropolitan Sewerage System all of the sewage and industrial wastes collected by it and Metro shall accept the sewage and wastes delivered for treatment subject to such reasonable rules and regulations as may be adopted from time to time by the Metropolitan Council. Metro shall not directly accept sewage or wastes from any person, firm, corporation or governmental agency which is located within the boundaries of or is delivering its sewage into the Local Sewerage Facilities of any Participant without the written consent of such Participant. Section 3. Construction of Facilities. Metro shall construct, acquire or otherwise secure the right to use all facili- ties required for the disposal of sewage delivered to Metro pur- suant to this Agreement and shall perform all services required for the maintenance, operation, repair, replacement or improvement 3. of the Metropolitan Sewerage System, including any additions and betterments thereto. Section 4. Connection of Local Sewerage Facilities to the Metropolitan Sewerage System. Local Sewerage Facilities of the City shall be connected to the Metropolitan Sewerage System at such time as any portion of the Metropolitan Sewerage System shall be available to receive sewage collected by such facilities. Metro shall, at its sole expense, connect those Local Sewerage Facilities of the City which are now in existence or which shall be constructed in accordance with the rules and regulations of Metro prior to the availability of the Metropolitan Sewerage System. Local Sewerage Facilities constructed after the Metropolitan Sewerage System shall have been made available to the area served by such Local Sewerage Facilities shall be connected to the Metropolitan Sewerage system at the expense of the Participant in accordance with the rules and regulations of Metro. Section 5. Payment for Sewage Disposal. For the disposal of sewage collected by the City and delivered to N_etro, the City shall pay to Metro on or before the last day of each month during the term of this agreement, commencing with the month of July, 1962, a sewage disposal charge determined as provided in this Section 5. 1. For the quarterly periods ending March 31, June 30, September 3D and December 31 of each year every Participant shall submit a written report to Metro setting forth (a) the number of Residential Customers billed by such Participant for local sewerage charges as of the last day of the quarter, 1.b) the total number of all customers billed by such Participant as of such day and (c) the total water consumption during such 4. { quarter for all customers billed by such Participant other than i Residential Customers. The quarterly water consumption report 4 shall be taken from water meter records and may be adjusted to exclude water which does not enter the sanitary facilities'of a customer. Where actual sewage flow from an individual customer is metered, the metered sewage flows shall be reported in lieu of adjusted water consumption. The total quarterly water con- sumption report in cubic feet shall be divided by 2,700 to determine the number of Residential Customer equivalents represented by each Participant's customers other than single family residences. The first report shall cover the quarterly period ending December 31, 1960 and shall be submitted on or before March 1, 1961. Succeeding reports shall be made for each quarterly period thereafter and shall be submitted within thirty (30) days following the end of the quarter. Metro shall maintain a permanent record of the quarterly customer reports from each Participant. 2. To form a basis for determining the monthly sewage disposal charge to be paid by each Participant during any parti- cular quarterly period Metro shall ascertain the number of Residential Customers and Residential Customer equivalents of each Participant for each such quarterly period beginning with the July -September quarter of the year 1962. This determination shall be made by taking the sum of the actual number of Residential Customers reported as of the last day of the next to the last preceding quarter and the average number of Resi- dential Customer equivalents per quarter reported for the four quarters ending with said next to the last preceding quarter, adjusted to eliminate any Residential Customers or Residential Customer equivalents whose sewage is delivered to a governmental 5. agency other than Metro or other than a Participant for -disposal outside of the Metropolitan Area. 3. For the period from July 1, 1962 to December 31, 1963, the monthly rate for each Residential Customer and Residential Customer equivalent of the City shall be Two dollars ($2.00) and the monthly sewage disposal charge to be paid by each Participant to Metro shall be obtained by multiplying the number of Residential Customers and Residential Customer equivalents of the Participant as determined in subparagraph 2 of this section by the monthly rate of Two dollars. 4. For each calendar year after the year 1963, the monthly sewage disposal charge payable to Metro shall be determined as follows: a) Prior to July 1st of each year Metro shall determine its total monetary requirements for the disposal of sewage during the next succeeding calendar year. Such requirements shall include the cost of administration, operation, maintenance, repair and replacement of the Metropolitan Sewerage System, establishment and maintenance of necessary working capital and reserves, the requirements of any resolution providing for the issuance of revenue bonds of Metro to finance the acquisition, construction or use of sewerage facilities, plus not to exceed 1% of the foregoing requirements for general administrative overhead costs. b) To determine the monthly rate per Residential Customer or Residential Customer equivalent to be used during said next succeeding calendar year, the total sone- tary requirements for disposal of sewage as determined in subparagraph 4(a) of this section shall be divided by twelve and the resulting quotient shall be divided by the 6. total number of Residential Customers and Residential Customer equivalents of all Participants ascertained in accordance with subparagraph 2 of this section for the October -December quarter preceding said July lst; provided, however, that the monthly rate shall not be less than Two i dollars ($2.00) per month per Residential Customer or Residential Customer equivalent at any time during the period ending July 31, 1972. i_ c) The monthly sewage disposal charge paid by each f Participant to Metro shall be obtained by multiplying the monthly rate by the number of Residential Customers and Residential Customer equivalents of the Participant deter- mined as provided in Paragraph 2 of thissection. An additional charge may be made for sewage or wastes of unusual quality or composition requiring special treatment, or Metro may require pretreatment of such sewage or wastes. An additional charge may be made for quantities of storm or ground waters entering those Local Sewerage Facilities which are constructed after January 1, 1961 in excess of the mini- mum standard established by the general rules and regulations of Metro. 5. A statement of the amount of the monthly sewage disposal charge shall be submitted by Metro to each Participant on or before the first day of each month during the term of this agreement commencing with the month of July 1962 and payment of such charge shall be due on the last day of such month. If any charge or portion thereof due to Metro shall remain unpaid for fifteen days following its due date, the Participant shall be charged with and pay to Metro interest on the amount unpaid from its due date until paid at the rate of 6% per annum, and Metro may, upon failure to pay such amount, enforce payment by any remedy available at law or equity. 7. 6. The Ci irrevocably obligates an( rinds itself to pay its sewage disposal charge out of the gross revenues of the combined water and sewerage system of the City. The City further binds itself to establish, maintain and collect rates and charges for water and for sewage disposal service which will at all times be sufficient to pay all costs of maintenance and operation of the combined water and sewerage system of the City, including the sew- age disposal charge payable to Metro hereunder, and sufficient to pay the principal of and interest on any revenue bonds of the City which shall constitute a charge upon such gross revenue. It is recognized by Metro and the City that the sewage disposal charge paid by the City to Metro shall constitute an expense of mainten- ance and operation of the combined water and sewerage system of the City. The City shall provide in the issuance of future water and sewer revenue bonds of the City that expenses of maintenance and operation of the combinE•d water and sewerage system of the City shall be paid before payment of principal and interest of such bonds. It is further recognized that the City shall have the right to fix its own schedule of water and sewerage rates and charges, provided that same shall produce revenue sufficient to meet the covenants contained in this agreement. Section 6. Responsibility of Participant. Each Partici- pant shall be responsible for the delivery to the Metropolitan sewerage System of sewage collected by such Participant, for the construction, maintenance and operation of Local Sewerage Facili- ties, and for the payment of all costs incident to the collection of such sewage and its delivery to the Metropolitan Sewerage System. Section 7. Records. Permanent books and records shall be kept by Metro of the rates established, the volumes of sewage delivered and discharged into the Metropolitan Sewerage System wherever such volumes are measured and the number of Residential Customers and Residential Customer a. Equivalents reported by each Participant, in addition to complete books of account shoving all costs incurred in connection with the Metropolitan Sewerage System. Such i records shall be maintained beginning with the commencement of operation of any part of the Metropolitan Sewerage System. I 3 Section 8. Oevelotsment of Metropolitan Sewerage S stem. It is contemplated that the Metropolitan Sewerage system will be developed in stages and the nature of facilities to be constructed, acquired or used and the time of such construction, acquisition or use shall be determined by Metro, it being contemplated that Metro shall ultimately provide sewage disposal service for the entire Metropolitan area. section_9. Use of Facilities Owned or Operated by the City. Effective July 1, 1962, or such earlier date as may be mutually agreed upon (hereinafter called "takeover date"), Metro shall have the exclusive right to use and the duty to maintain, operate, repair and replace the facilities owned by the City which are described in Exhibit "A" attached hereto and by this reference made a part hereof, subject to the continued availability of such facilities to receive, transport or treat sewage delivered by the City. From and after the takeover date Metro shall acquire, construct, maintain, operate, repair and replace all facilities now or hereafter required for the treatment and disposal of sewage delivered by the City and the City shall make payment for such treatment and disposal as provided in Section 5 of this Agreement. For the privilege of using the facilities described in Exhibit "A" Metro shall pay to the City the total amount of Ninety eight thousand seven hundred twenty seven and 53/100 Dollars ($98,727.53) (hereinafter called "amount of reimbursement") 9. If the City sh 1 construct improvements L additions to the facilities described in Exhibit "A" with the approval of Metro after the date of this Agreement and prior to the take— over date, the City shall be reimbursed for the actual cost thereof in cash within thirty (30) days following the said takeover date in addition to the amount of reimbursement set forth above. The right of Metr® to -use facilities designated as "temporary" shall expire six months following the date of completion as determined by Metro of permanent metropolitan facilities adequate to replace such temporary facilities. The City shall continue to own the facilities described in this Section 9 and shall continue to pay the principal of and interest on any bonds issued to pay in whole or in part the cost of acquisition and construction of such facilities, provided that facilities which are designated as "permanent" shall be conveyed by the City to Metro by quit claim deed upon payment of all presently outstanding revenue bonds or general obligation bonds of the City secured by or issued to acouire or construct said facilities. The City shall give written notice to Metro prior to June 1, 1961, setting forth the manner in which the amount of reimbursement shall be paid. ,The City may elect to receive all or any portion of said amount in cash within thirty (30) days following the date of delivery of revenue bonds issued by Metro for the purpose of providing funds therefor and, in any event, not later than July 1, 1962 (hereinafter called "cash payment date") and may elect to receive any portion which is not paid on said cash payment date together with interest thereon at the rate of 4% per annum from said date, in the form of a credit against the City s monthly sewage disposal charge in equal monthly amounts sufficient to amortize such unpaid amount of reimbursement and interest thereon prior MIA to July 1, 1977. The City may at any time after the cash payment date elect to receive any unpaid portion of the amount of reimbursement in cash with interest at the rate of 4% per annum to date of final payment by giving written notice to Metro at least one year prior to the date such final payment is to be made. Section 10. Insurance and Liability for Damages. Each Participant with a population of less than 100,000 shall secure and maintain with responsible insurers all such insurance as is customarily maintained with respect to sewerage systems of like character against loss of or damage to the respective sewerage facilities of each and against public and other liability to the extent that such insurance can be secured and maintained at reasonable cost. Any liability incurred by Metro as a result of the operation of the Metropolitan Sewerage System shall be the sole liability of Metro and any liability incurred by the City as a result of the operation of the Local Sewerage Facilities of the City shall be the sole liability of the City. Section 11. Assignment. Neither of the parties hereto shall have the right to assign this Agreement or any of its rights and obligations hereunder nor to terminate its obligations hereunder by dissolution or otherwise without first securing the written consent of the other party and this Agreement shall be binding upon and inure to the benefit of the respective successors and assigns of the parties hereto. In the event that the City should be dissolved, the local sewer facilities owned and operated by the City shall by such act of dissolution be assigned and transferred to Metro subject to any outstanding debts of the City incurred for the construction 11. or acquisition of such facilities and subject to the obli- gation of Metro to continue to provide sewer service to the residents served by such local facilities upon payment of the reasonable costs thereof. Section 12. Effective Date and Term of Contract. This Agreement shall be in full force and effect and binding upon the parties hereto upon the execution of the Agreement and shall continue in full force and effect for a period of fifty years unless prior to the takeover date Metro shall not have entered into a firm commitment for the sale of revenue bonds to finance any portion of the Comprehensive Plan, then ip such event only, this Agreement shall be terminated as of said date. Metro shall make every reasonable effort to secure such a commitment prior to said date. Section 13. Notice. Whenever in this Agreement notice is required to be given, the same shall be given by Registered Mail addressed to the respective parties at the following addresses Municipality of Metropolitan Seattle 152 Denny Way Seattle 9, Washington City of Bothell Bothell, Washington unless a different address shall be hereafter designated in 12. writing by either of the parties. The date of giving such notice shall be deemed to be the date of mailing thereof. Billings for and payments of sewage disposal costs may be made by regular mail. Section 14. Execution of documents. This Agreement shall be executed in ten counterparts, any of which shall be regarded for all purposes as one original. Each party agrees that it will execute any and all deeds, instruments, documents and resolutions or ordinances necessary to give effect to the terms of this Agreement. Section 15. Waiver. No waiver by either party of any term or condition of this Agreement shall be deemed or construed as a waiver of any other term or condition, nor shall a waiver of any breach be deemed to constitute a waiver of any subsequent breach whether of the same or a different provision of this Agreement. Section 16. Remedies. In addition to the remedies provided by law, this Agreement shall be specifically enforceable by either party. Section 17. Entirety. This Agreement merges and supersedes all prior negotiations, representations and agree- ments between the parties hereto relating to the subject matter hereof and constitutes the entire contract between the parties concerning the disposal of sewage by the City and acceptance of such sewage by Metro for disposal. IN WITNESS WHEREOF, the parties hereto have executed 13. 2 this Agreement as of the day and year first above written. ULA�a W. C. Caldwell Clerk ATTEST. Maralyn Sullivan Clerk of the Council CITY OF BOTHELL BY l_r�2 Charles H. Xay ner Mayor MUNICIPALITY OF METROPOLITAN SEATTLE C. lregvylo�nwor Chairman of the Council 14. STATE OF WASHINGTOK � ss. COUNTY OF KING o .1• On this 17 —day of fa t, , 1961 before me personally appeared CHARLES H. KAYSNER and W. C. s CALDWELL* to me ]mown to be the Mayor and City Clerk, r respectively, of the City of Bothell, a municipal corpora- tion, and acknowledged the within and foregoing instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath zstated that they were authorized to execute said instrument and that the seal affixed is the corporate seal of said corporation. 1- IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the day and year first above - written �Z[ i�;-9 l % 1. .•�[iidA-4 I �•�_s�.�( Notary Public in and fo the, tate of Washington, residing at Y STATE OF WASHINGTON ) ss. COUNTY OF KING ) On this of 1961, _L_day '4rll before me personally appeared C. CAREY DONWORTH and MARALYN SULLIVAN, to me known to be the Chairman of the Council and Clerk of the Council, respectively, of the Municipality of Metropolitan Seattle, a municipal corporation, and acknowledged the within and foregoing instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that they were "b authorized to execute said instrument and that the seal affixed is the corporate seal of said corporation. v IN WITNESS WHEREOF, I have hereunto set my hand ` and affixed my official seal the day and year first above # i. written. s_. No ary Public in and for a State of Washington, residing at Seattle :JUal. CTj l. AGREEMENT FOR SEWAGE D:CSPOSAL MUNICIPAIaITY OF METROPOLITAN SEAT' - CITY OF 1— HELL THIS AGREEMENT made as of this lst day of December, .1964, between the CITY OF SOTHELLg a municipal corporation of the State of Washington, hereinafter geferred to as the "City" and the MUNICIPALITY OF METROPOLITAN SEATTLE, municipal corporation of the State of Washington, hereinafter referred to as "Metro", W I T N E S S E T Ho wHERFAS, the public health, welfare and safety of the residents of the City and the residents aIf the Metroplitan Area B require the elimination of existing sources of eater pollution and the preservation of frnsh and salt water resources; and WHEREAS, growth of population, topographic conditions and preservation of waters resources require that certain major sewage disposal works be constructed and operated and haat the cities and special districts within the Fake Washington drainage basin dispose of their sewage in accordance with a comprehensive sewage disposal plan; and WHEREAS, Metro is engaged in developing and operating a metropolitan sewage disposal Gystsm and the City is engaged in developing and operating a local sewage collection system, and sewage has been delivered by the City to Metro for disposal pursuant to an Agreement for Sewage Disposal dated April 27, 1961; and WHEREAS, the City now desires to deliver 't®`metro sewage collected by the City from areas which are presently located outside of the boundaries of Metro and Metro is willing to accept such sewage for disposal under certain tez'ma and conditions; and WHEREAS, it is necessary that anew contract be now entere into establishing the rights and duties of the parties; NOW, THEREFORE, in consideration of the mutual covenants contained herein, it is hereby agreed as follows: Section 1. Definition of Terms. The following words and phrases used in this contract shall have the meanings hereinafter set forth in this section: (a) The words "Comprehensive Plan" shall mean the Comprehensive Sewage Disposal Plan adopted in Resolution No. 23 of the Municipality of Metropolitan Seattle and all amendments thereof heretofore or hereafter adopted. (b) The words "Metropolitan Sewerage System" shall mean all of the facilities to be constructed, acquired or used by Metro as a part of the Comprehensive Plan. The Metropolitan SewerageSystemshall generally include sewage disposal facilities with capacity to receive sewage from natural drainage areas of approximately ono thousand acres or more. The Metropolitan Sewerage System shall thus include trunk or interceptor sewer facilities extending to a point within each tributary., and natural drainage area, where not more than one thousand acres remain to be served beyond the upper terminus of ouch trunk or interceptor sewer. (c) The words "Local Sewerage Facilities" shall mean all facilities owned or operated by a Participant for the local collection of sewage to be delivered to the Metropolitan Sewerage System. (d) The words "Metropolitan Area" shall mean the area contained within the boundaries of the Municipality of Metropolitan Seattle as now or hereafter constituted. (e) The word "Participant" shall mean each city, town, county, sewer district, municipal corporation, person, 2 firm or private corporation which shall dispose of any portion of its sanitary sewage into the metropolitan Sewerage System and shall have entered into a contract with Metro providing for such disposal. if) The words "Residential Customer" shall mean a single family residence billed by a Participant for sewerage charges.. Section 2. Delivery and Acceptance of Sewage. From and after the date of this agreement, the City shall deliver to the Metropolitan Sewerage System all. of the sewage and industrial wastes collected by it and Metro shall accept the sewage and wastes delivered to the Metropolitan Sewerage System for treatment subject to such reasonable rules and regulations as may be adopted from time to time by the Metropolitan Council. Metro shall not directly accept sewage or wastes from any person, firm, corporation or governmental agency which is located within the boundaries of or is delivering its sewage into the Local Sewerage Facilities of the city without the written consent of the City. Section 3. Construction of Facilities. Metro shall construct, acquire or otherwise secure the right to use all facilities and shall perform all services required for the maintenance, operation, repair, replacement or improvement of the Metropolitan Sewerage System, including any additions and betterments thereto. Metro shall in its sole discretion determine the nature, location and time of construction Of facilities of the Metropolitan Sewerage System. Section 4. Connection of Local Sewerage Facilities to the Metropolitan Sewerage System. Local Sewerage Facilities of the city shall be connected'to the Metropolitan sewerage 3 i system at such time as any portion of the Metropolitan sewerage System shall be available to receive sewage collected by such facilities. Metro shall, at its sole expense, connect Local Sewerage Facilities of the City which are in existence on the date of this contract. Local Sewerage gad lities constructed after the date of this contract shall be connected to the Metropolitan Sewerage System at the expense of the City in accordance with the rules and regulations of Metro. Section S. PaMM ntfar Sewage Dislposai. For the disposal of sewage collected by the city and delivered to ^ Metro the City shall pay to Metro on or before the last day of each month during the term of this agreement a sewage disposal i.. charge determined as provided in this Section 5. 1. For the quarterly periods ending March 31, .Tune 30, September 30 and December 31 of each year every Participant shall s submit a written report to Metro setting forth (a) the number o Residential Customers. billed by such Participant for local sewerage charges as of the last day of the quarter, (b) the total number of all customers billed by such Participant as of such day and (c) the total water consumption during such quarter for all customers billed by such Participant other than Residential customers. The quarterly water consumption report shall be taken from water meter records and may be adjusted to exclude water which does not enter the sanitary facilities of a customer. Where actual sewage flow from an individual customer is metered, the metered sewage flows shall be reported in lieu of adjusted water consumption. The total quarterly water consumption report in cubic feet shall be divided by 2,700 to determine the number of Residential customer equivalents represented by each Participant's customers other than single family residences. Metro shall 4 maintain a permanent record of the quarterly customer reports from each Participant. The City shall. bill every customer receiving sewer service from the Citgo 2. To fore a basis for determining the monthly sewage disposal charge to be paid by each Participant during any particular quarterly period Metro shall ascertain the number of Residential Customers and Residential Customer equivalents of each Participant. This determination shall be made by taking the sum of the actual number of Residential Customers reported as of the last day of the next to the last preceding quarter and the average number Qf Residential Customer equivalents per quarter reported for the four quarters ending with said next to the last preceding quarter, adjusted to eliminate any Residential Customers or Residential Customer equivalents whose sewage is delivered to a governmental agency other than Metro or other than a Participant for disposal outside of the Metropolitan Area. The number thus determined .is hereafter called the "basic reported number." The basic reported number of Residential Customers and Residential Customer equivalents of the City shall be further adjusted by adding thereto twenty-five per cent (25%) of the, number of Residential Customers or Residential Customer equivalents of the City located outside the boundaries of Metro. The sum thus determined is hereinafter called the "adjusted reported number." If any portion of the area served by the City shall be annexed to Metro after the date of this agreement the twenty-five per cent additive adjustment shall be eliminated as to the number of Residential Customers or Residential customer equivalents lccated within such annexed area as of the first day of the month following the month in which such annexation shall have become effective. The adjusted reported number of Residential Customers and Residential Customer equivalents of the City shall be the number of Residential Customers and Residential customer equiva- lents reported by the City for the purpose of determining sewage disposal charges pursuant to Paragraph -3 of this section. 3. For each calendar year the monthly sewage disposal charge payable to Metro shall be determined as follows: a) Prior to July 1st of each year Metro shall determine its total monetary requirements for the disposal of sewage during the next succeeding calendar year. Such requirements shall include the cost of administration, operation, maintenance, repair and replacement of the Metropolitan Sewerage System, establishment and maintenance of necessary working capital and reserves, the requirements of any resolu- tion providing for the issuance of revenue bonds of Metro to finance the acquisition, construction or use of sewerage n facilities, plus not to exceed ly® of the foregoing require- ments for general administrative overhead costs. b) To determine the monthly rate per Residential Y Customer or Residential Customer equivalenttobe used during r.. said next succeeding calendar year, the total monetary require- ments for disposal of sewage as determined in subparagraph 3(a) of this section shall be divided by twelve and the resulting quotient shall be divided by the total number of Residential Customers and Residential Customer equivalents of all Participants ascertained in accordance with subparagraph 2 of this section for the October -December quarter preceding said r July 1st; provided, however, that the monthly rate shall not be less than Two Dollars ($2.00) per month per Residential Customer or Residential Customer equivalent at any time during the period ending July 31, 1972. c) The monthly sewage disposal charge paid by each Participant to Metro shall be obtained by multiplying the monthly rage by the number of ResidentiLl Customers and Residential Customer equivalents of the Participant determined as provided in paragraph 2 of this aectiona An additional charge may be made for @ewage or wastes of unusual quality or composition requiring special treatment-, or Metro may require pro—treatment of such sewage or wastes, An additional charge may be rade for quantities of storm or ground waters entering those Local Sewerage Facilities which are constructed after January 1, 1961 in excess of the minimum standard ®stablished by the general rules and regulations of Metro. 4. A statement of the amount of the monthly sewage disposal charge shall be submitted by Metro to each Participant on or before the first day of each month and payment of such charge shall be due on the last day of such month. If any charge or portion thereof due to Metro shall remain unpaid for fifteen days following its due date, the Participant shall be charged with and pay to Metro interest on the amount unpaid from its due date until paid at the rate of 6% per annum, and Metro ray, upon failure to pay such amount, enforce payment by any remedy available at law or equity, 5. The City irrevocably obligates and binds itself to pay its sewage disposal charge out cf the gross revenues of the sewer system of the City. The City further binds itself to - establish, maintain and collect chargesfor sewer service frem every customer receiving such servic® %ohich will in the aggnagate at all times be sufficient to pay all costs of maintenance and operation of the sewer system of the City, including the sewage disposal charge payable to Metro hereunder and sufficient to pay the principal of and interest on any revenue bonds of the city 7 which shall canotitute a charge upon ouch gross revenues. It is recognized by Metro and the City that the 2ewage disposal charge paid by the City to Metro shall constitute an expense of maintenance and operation of the sewer system of the City. The City shall provide in the issuance of future sewer revenue bonds of the City that expenses of maintenance and operation of the sewer system of the City shall be paid before payment of principal and interest of such bonds. The City shall have the right to fix its own schedule of rates and charges for sewer service provided that same shall produce revenue sufficient to meet the covenants contained in this Agreement and provided that the customer= of the City located within the r Metropolitan Area shall be separately classified from those located outside the Metropolitan Area for rate making purposes and the rates for sewer service to customers located within the Metropolitan Area shall fully reflect any lower Metro sewage disposal charge for sewage from customers within the Metropolitan Area. a Section 6. Responsibility of Participant. Each Parti- cipant shall be responsible for the delivery to the Metropolitan t _ Sewerage System of sewage collected by such Participant, for the construction, maintenance and operation of Local Sewerage Facilities, l- and for the payment of all costs incident to the collection of such sewage and its delivery to the Metropolitan Sewerage System. Section 7. Records. Permanent books and records shall be kept by Metro and the City of the rates established, the r volumes of sewage delivered and discharged into the Metropolitan Sewerage System wherever such volumes are measured and the number of Residential Customers and Residential customer equivalents reported. In addition, Metro shall keep complete books of account r showing all costs incurred in connection with the Metropolitan L Sewerage System. The records required by this paragraph shall be available for examination by either party at any reasonable time. 8 9 Section B. Aevelopment of Metropolitan sawerace Systam. It is contemplated that the Metropolitan Sewerage system will be developed in stages and the nature of facilities to be constructed, acquired or used and the time of such construction, acquisition or use shall be determined by Metro, it. being contemplated that Metro shall ultimately provide sewage 21isposal service for the entire Metropolitan Area and such adjacent areas as may feasibly be served into the Metropolitan sewerage System. Section 9. Use of City Facil:tties. Metro shall have the exclusive right to use and the duty to maintain, operate, repair and replace those facilities, the naturae and location of which are described in Exhibit "A" attached hereto. and by this reference made a part hereof, subject to the continued availability of such facilities or other facilities of Metro to receive, transport or treat sewage delivered at such location by the City. The right of Metro to use the facilities described in Exhibit "A" shall expire six months following the date of completion as determined by Metro of other metropolitan facilities adequate to replace such temporary facilities. The City shall continue to retain its existing rights of ownership in the facilities described in this Section 9 and shall continue I:o pay the principal of and interest on any bonds issued to pay ill whole or En part the cost of acquisition and construction of such :Facilities. Section 10. Insurance and Liability for Damages, The City shall secure and maintain with responsible insurers all such insurance as is customarily maintained with respect to sewage systems of like character against loss of or damage to the sewerage facilities of the city and against public and other liability to the extent that such insurance: can be! secured and maintained at reasonable cost. Any liability incurred by Metro as a result of the operation of the Metropolitan Sewerage System Or the above described temporary facilities shall be the 9 sole liability of Metro and any liability incurred by the City as a result of the operation of the Local Sewerage Facilities of the city shall be the sole liability of the City. Section 11, Assignment. Neither of the parties hereto shall have the right to assign this Agreement or any of its rights and obligations hereunder nor to terminate its obligations here- under by dissolution or otherwise without first securing the written consent of the other party and this Agreement shall be binding upon and inure to the benefit of the respective successors and assigns of the parties hereto. In the event that the City should be dissolved, the local sewer facilities owned and operated by the City within the Metropolitan Area shall by such act of dissolution be assigned and transferred to Metro subject to any outstanding debts of the City incurred for the construction or acquisition of such facilities and subject to the obligation of Metro to continue t to provide.sewer service to the residents served by such local facilities upon payment of the reasonable costs thereof by the users thereof. section 12. Effective Date an Term of Contract. This Agreement shall be in full force and effect and binding upon the paities hereto upon the execution of the Agreement and shall continue in full force and effect for a period of fifty years from the date hereof. Section Whenever in this Agreement notice i 13. Notice. required to be given, the same shall be given by Registered Mail addressed to the respective parties at the Jallowing addresses: Municipality of Metropolitan Seattle 410 west Harrison Street Seattle, Washington 98119 city of Bothell Bothell, Washington REG unless a different address shall be hereafter designated in ,wgiting by either of the parties. The date of diving such notice shall be deemed to be the date of mailing thereof. Billings for and payments of sewage disposal costs may be made by regular mail. Section 14. Execution of Docsments. This Agreement shall be executed in six counterparts, any of which shall be regarded for all purposes as one original. Each party agrees that it will execute any and all deeds, instruments, documents and resolutions,or ordinances necessary to give effect to the terms of this Agreement. section 15. Waiver. No waiver by either party of @ny term or condition of this Agreement shall be deemed or construed a, a waiver of any other term ®r conditlq)n, nor shall a waiver of any breads be deemed to constitute a waivovx of any subsequent breach whether of the same or a different priavision of this Agreement. Section 16. Remedies in addition.to the remedies provided by law, this Agreement shall be specifically enforceable by either party. Section 17. Entirety. This Agreement supersedes the Agreement for Sewage Disposal dated P,pril 27, 1961, effective as of December 1, 1964, provided that all =Pewage disposal charges payable thereunder for the period ending November 30, 1964, shall be paid by the City. This Agreement merges and supersedes all prior negotiations, representations and agreements between the parties hereto relating to the subject matter hexa®f and constitutes the entire contract between the parties concerning the disposal of sewage by the -city and acceptance of such sewage by Metro for disposal. IN WITNESS WHEREOF, the parties have executed this 11 i t t Agreement as of the day and year first above written. ATTEST: City Clerk ' n ATTEST: Maralyn p1livan Clerk of the Council CITY OF BOTHELL y Mayor MUNICIPALITY OF METROPOLITAN SEATTLE BY— C. Carey/Donworth Chairman of the Council 12 CITY OF BOTH:ELL MUNICIPALITY OF METROPOLITAN SEATTLE FIRST AMENDMENT TO AGREEMENT FOR SEWAGE DISPOSAL THIS AGREEMENT made as of this e& day of 1982 between the CITY OF SEATTLE, a municipal corporation of the State of Washington (hereinafter referred to as the "City") and the MUNICIPALITY,OF METROPOLITAN SEATTLE, a metropolitan muni- cipal corporation of the State of Washington (hereinafter referred to as "Metro"); W I T N E S S E T H WHEREAS, the parties have entered into a long term agree - meet for Sewage Disposal dated December 1, 1964 (hereinafter referred to as the "Basic Agreement"); and WHEREAS, the parties now desire to amend said Basic Agree- ment; NOW, THEREFORE, it is hereby agreed as follows: Section 1. Amendment of the Basic Agreement. Section 5 of the Basic Agreement is hereby amended to read as follows: "Section 5. Payment for Sewage Disposal. For the disposal of sewage collected by the City and delivered to Metro the City shall pay to Metro on or before the last day of each month during the term of this agreement a sewage disposal charge determined as provided in this Section 5. 7 -� I. For the quarterly periods ending March 31, --June 30, - September 30 and December 31 of each year every Participant Lshall submit a written report to Metro setting forth (a) the number of Residential Customers billed by such Participant for local sewerage charges as of the last day of the quarter, (b) the total number of all customers billed by such Parti- icipant as of such day and (c) the total water consumption during such quarter for all customers billed by such Partici- pant other than Residential Customers. The quarterly water consumption report shall be taken from water meter records and may be adjusted to exclude water which does not enter the sanitary facilities of a customer. Where actual sewage flow from an individual customer is metered, the metered sewage flows shall be reported in lieu of adjusted water consumption. The total quarterly water consumption report in cubic feet shall be divided by 2,700 to determine the number of Residential Customer equivalents represented by each Participant's customers other than single family residences. Metro shall maintain a permanent record of the quarterly customer reports -from each Participant. The City shall bill every customer receiving sewer service from the City. _ 2. To form a basis for determining the monthly sewage 3_ disposal charge to be paid by each Participant during any particular quarterly period Metro shall ascertain the number of Residential Customers and Residential Customer equivalents of each Participant. This determination shall be made by taking the sum of the actual number of Residential Customers reported as of the last day of the next to the last preceding quarter and the average number of Residential Customer equiva- lents per quarter reported for the four quarters ending with said next to the last preceding quarter, adjusted to eliminate any Residential Customers or Residential Customer equivalents whose sewage is delivered to a governmental agency other than Metro or other than a Participant for disposal outside of the Metropolitan Area. 2 3. For each calendar year -the monthly sewage disposal charge payable to Metro shall be determined as follows: a) Prior to July lst of each year Metro shall determine its total monetary requirements for the disposal of sewage during the next succeeding calendar year. Such requirements shall include the cost of administration, operation, maintenance, repair and replacement of the Metropolitan Sewerage System, estab- lishment and -maintenance of necessary working capital and reserves, the requirements of any resolution pro- viding for the issuance of revenue bonds of Metro to finance the acquisition, construction or use of sewerage facilities, plus not to exceed 1% of the foregoing requirements for general administrative overhead costs. , b) To determine the monthly rate per Residential Customer or Residential Customer equivalent to be used said next succeeding calendar year, the total monetary requirements for disposal of sewage as determined in subparagraph 3(a) of this section shall be divided by twelve and the resulting quotient shall be divided by the total number of Residential Customers and Residential Customer equivalents of all Participants ascertained in accordance with subparagraph 2 of this section for the October-Deceaber quarter preceding said July lst. c) The monthly sewage disposal charge paid by each Participant to Metro shall be obtained by multi- plying the monthly rate by the number of Residential Customers and Residential Customer equivalents of the Participant determined as provided in Paragraph 2 of this section. An additional charge may be made for sewage or wastes of unusual duality or composition requiring special treatment, or Metro may require 3 -pretreatment of -such sewage or wastes. An additional charge may be made for quantities of storm or ground waters entering those Local Sewerage Facilities which are constructed after January 1, 1961 in excess of the minimum standard established by the general rules and regulations of Metro. 4. A statement of the amount of the monthly sewage disposal charge shall be submitted by Metro to each Partici- pant on or before the first day of each month and payment of such charge shall be due on the last day of such month. If any charge or portion thereof due to Metro shall remain unpaid for fifteen days following its due date, the Partici- pant shall be charged with and pay to Metro interest on the amount unpaid from its due date until paid at the rate of 6% per annum, and Metro may, upon failure to pay such amount, enforce payment by any remedy available at law or equity. S. The City irrevocably obligates and binds itself to pay its sewage disposal charge out of the gross revenues of the sewer system of the City. The -City further binds itself to establish, maintain and collect charges for sewer service from every customer receiving such service.which will in the aggregate at all times be sufficient to pay all costs of maintenance and operation of the sewer system of the City, including the sewer disposal charge payable to Metro hereunder and sufficient to pay the principal of and interest on any revenue bonds of the City which shall constitute a charge upon such gross revenues. it is recognized by Metro and the City that the sewage disposal charge.paid by the City to Metro shall constitute an expense of maintenance and operation of the sewer system of the City. The City shall provide in the issuance of future sewer revenue bonds of the City that expenses of maintenance and operation of the sewer system of the City shall be paid before payment of principal 4 and interest of such bonds. The City shall have the right to fix its own schedule of rates and charges for sewer service provided that same shall produce revenue sufficient to meet the covenants contained in this Agreement. Section 2. Effective Date of Amendment.. This Amendment to the Basic Agreement shall be in full force and effect as of March 1., 1981. Section 3. Basic Agreement Unchanged. Except as otherwise provided in this Agreement, all provisions of the Basic Agree- ment shall remain in full force and effect. XN WITNESS WHEREOF, the parties herato have executed this First Amendment as of the day and year f:Lrst written above. 0 ATTEST: � Betty ECeeney, C y Cler ATTEST: Maureen Varni Clerk of the Council CITY 01? 'BOTHELL r f_ V Jerald L. Osterman, City Manager DiUNICIPALITY OF METROPOLITAN SEATTLE Neal Peterson Executive Director CITY OF BOTHELL MUNICIPALITY OF METROPOLITAN SEATTLE EXTENSION OF AGREEMENT FOR SEWAGE DISPOSAL WHEREAS, the City of Bothell (the "City") and the Municipality of Metropolitan Seattle (the "Municipality") are parties to a certain Agreement for Sewage Disposal (the "Agreement") dated December 1, 1964, as amended, pursuant to which the City delivers to the Municipality for treatment and disposal all the sewage and industrial wastes it collects from its service area; and WHEREAS, the Agreement expires by its terms on December 2014; and r WHEREAS, it is in the best interests of the City and the Municipality that the expiration date of the Agreement be extended in order to allow the Municipality to sell and issue its sewer revenue bonds with maturities extending beyond 2014; NOW, THEREFORE, in consideration of the mutual.covenant contained herein and in the Agreement, it is hereby agreed as follows: The Agreement for Sewage Disposal between the City of Bothell and the Municipality of Metropolitan Seattle dated December 1, 1964, as amended, is hereby extended for a period of twenty-two and one-half years and shall continue in full force and effect until July 1, 2036• �714 aO ,4 3 S�s �.� t i 1 1 I l 1 1 1 1 1 It is further agreed that all other provisions of said Agreement shall remain unchanged, and the Agreement dated December 1, 1964, as amended, as extended herein shall constitute the entire Agreement for Sewage Disposal between the parties. DATED: This day of 1985 CITY OF BOTHELL ATTEST: C y Cl rk 47 r ATTEST: Bonnie Mattson Clerk of the Council By L e7 MUNICIPALITY OF METROPOLITAN SEATTLE By Gary Zimmerman Chairman of the Council 1 2 3 4 5 6 7 8 9 i01, 11 12 13 14 -15 16 17. 18 19 20 21 22 23 24 25 26 27 28 .29 30 31 32 A G R E E X R R T k AGREEMENT made and entered into this / 7 _ day of March, 1969, by and between CITY OF BOTHELL, a municipal corpo- ration in King County, Washington, and ALDERWOOD WATER DISTRICT, a municipal corporation operating within the limits of Snohomish County, Washington, hereinafter called CITY and DISTRICT, respec- tively, WITNESSETH: WHEREAS, CITY has called for bids for the constructio of a sanitary sewer line known as the Hollyhills Sewer, specifying two alternates in its call; and, WHEREAS, alternate one of two alternates is based upon a design sufficient in size to accommodate anticipated futur: needs of DISTRICT for delivery of sewage within the limits of DISTRICT; and, IMERRAS, the lowest qualified bidder in the bid opening on said project was HAROLD KAESER-60,4PANY of Seattle, and CITY is desirous of awarding the bid to said company at its next regular meeting to be held March 17, 1969, and is willing to award a contract to said company based upon alternate one if DISTRICT is willing to pay to CITY the difference between alter- nate one and two, plus the usual contingency, which differential amounts to $31,000.00; and, WHEREAS, DISTRICT has indicated its willingness to pay CITY such differential if CITY will award the contract for tt construction of the first alternate, COOPER S LVDERSON 801 RCALT •WLOINO Ev R[ . WASHINGTON 98201 AL WE 9-1152 11 2 3 4 5 6 7 8 9 10 11 12 13 i 14 15 16 17 18 19 20 21 22 23 24 25 26 27I 28 .29 30 31 32 NOW, THEREFORE, IT IS AGREED AS FOLLOWS: X. The DISTRICT shall pay to the CITY the sum of Thirty one Thousand Dollars ($31,000.00) within sixty (60) days after the 17th day of NArch, 1969. II. The CITY will enter into a contract with HAROLD ) SAESER COMPANY of Seattle for the alternate design providing for the increased size of sewer pipe to accommodate the future needs of the DISTRICT, not to exceed two million gallons per day, and cause the same to be constructed within a reasonable period of time III. i The CITY agrees that it will accept from the DISTRIJ at a point approximateiLy one mile south of the King County boundary line all sewage developed by the DISTRICT from its sewer system not to eacceed two million gallons per day, and will deliver said sewage so accepted to the system of Municipality of Metropolitan Seattle, herein referred to as METRO. The DISTRICT shall pay to METRO all charges for ,acceptance of sewage developed and delivered to said line by the DISTRICT. I. I it . The DISTRICT shall pay to the CITY its fair prorated) share of the costs maintenance and operation of the sewer line herein based upon the number of dwelling units that the district shall be serving and delivery to said line in proportion to the number of dwelling units or equivalent units that the said sewer line shall be serving.. Duelling units shall be in accordance with I, the definition of units as set forth by METRO pursuant to its _, i contract with the CITY. COOPER b LYO ERSON 1 RCA LTY BUILOIN6 Etl[RaTY. W..NIN ETON 9®201 eZe AL -9 9.1159 E a r i r 1, a 1 IV. 2 It is necessary for the DISTRICT to construct a pump - 3 ing station to place its sewage in said line, and in the event the 4 CITY shall desire to use said pumping station, then in that event 5 the CITY will share with the DISTRICT the cost of maintenance and 6 7 operation of said pumping station in the same manner as the costs 8 are shared in operation of the sewer line as provided in Paragrap 9 III. The DISTRICT shall maintain said pumping station at all 10 times and the CITY said sewer line, all subject to the provisions 11 as herein set forth. 12 In the event the DISTRICT shall terminate delivery c 13 sewage to said sewer line, arrangements will be made between the 14 1 15 DISTRICT and the CITY for the acquisition of said pumping statior 16 by the CITY if the CITY shall so desire, based on depreciated 17. value. 18 IN WITNESS WHEREOF, the parties by and through thei: 19 duly elected officials have executed this Agreement after author 20 ty to'do so was given at a regular meeting of the respective 21 bodies. 22 23 CITY OF B Lf n 24 Attest:. B ' Y y or Ma 25 y 26 City Clerk 27 I I ALDERWOOD WATER DISTRICT 28 .29Attest By P Vl' esident 30 32 -3- COOPER 6 LYDERSON 301 9[ALYY 9U=MG EKK[ . WAIKINGT H 90201 ALs1Nt 9-1139 or s- t— i C AGREEMENT AGREEMENT made this % day of April , 1969, by and between CITY OF BOTHELL, a municipal corporation of the third class located in King County, Washington, and ALDERWOOD WATER DISTRICT, a municipal corporation located and operating within the limits of Snohomish County, Washington, witnesseth: WHEREAS the City of Bothell heretofore caused to be constructed certain sanitary sewer facilities in Snohomish County, Washington shown on the drawing attached hereto prepared by Gray E Osborne, Consulting Engineers, dated January 30, 1968, as "existing" sewer; and WHEREAS subsequent to the construction of such facilities within Snohomish County by the City of Bothell, Alderwood Water District has acquired jurisdiction to serve said areas with sani- tary sewer facilities; and WHEREAS said district is not now and will not in the near future be able to provide sanitary sewer facilities to serve the areas presently served by the City of Bothell, nor those areas in- cluded within the gray hatched lines shown on the attached drawing, and the parties hereto. have reached agreement relative to providing sanitary sewer facilities to the areas within said gray hatched lines, which area is particularly described in Appendix A attached hereto, therefore IN CONSIDERATION of the mutual benefits accruing herefrom, the above named parties do agree as follows: 1. The City of Bothell may construct and maintain sanitary sewer facilities consisting of trunks, laterals, manholes and pumping stations required to serve the area described in Appendix A attached hereto, and depicted by the drawing attached hereto, with sanitary sewer facilities. 2. Upon the construction and placing in service of. the pro- posed "North Creek Trunk Line" by Alderwood Water District, and when service lines are constructed by saicl district therefrom to serve the area described in Appendix A attached, then after written i, notice by the district to the City that such lines are in service, given at least Lr o days prior to the proposed cut-off date, then service to the area described in Appendix A attached by the City shall cease, and the right to serve such s�rea by the district shall commence; PROVIDED that the District shall not have the right to serve such area sooner than :Five (5) year: after the date of this agreement. 3. Nothing herein contained shall be construed to impair any obligation of the City under that certain contract dated June 1966 between the City and Northshore School District No. 417, entered into pursuant to the Muncipal Water and Sewer Facilities i Act providing for reimbursement to said school district of charges collected by the City for tapping onto the existing sewer facilities depicted on the attached drawing; and the district specifically agrees to undertake the obligations imposed by said contract on the City in the event the district should take over and provide service to the area described on Appendix A within the term of said contract. 4. This contract is not intended by the parties to cover the acquisition from the City by the district of any" sanitary sewer facilities presently existing or which may be constructed in the area described in Appendix A by the City Drior to the date the district starts to furnish service to such area; and any such acquisition of facilities owned by the City therein is expressly reserved for subsequent agreement of the parties. 5. Subject to the limitations provided in Paragraph 2 hereof, it is agreed that when the district is in a position to serve the area cescribed on Appendix A, the district will take over the facilities located within said area including all of the lateral lines, but will be bound to perform as though it were an original -2- party, all contracts theretofore entered into by the City under ATTEST: City Clerk L ALDERWOOD WATER DISTRICT F 11 -3- the Municipal Water and Sewer Facilities Act (R.C.W. 35.91.010, et seq.) which are then in force, and which in any manner affect the area described on Appendix A; and in addition will pay to the City such sum as represents the cost to City of all lateral lines taken over by the district, which were theretofore installed by the City at its expense, less normal depreciation. The district further agrees that the area described in Appendix A where sewer lines are installed will not be assessed for the cost of such lateral lines theretofore installed, and will only be assessed for that portion of the major trunk system, which assessment may be spread over the whole drainage area, including the property herein described, and then only to the extent that the property is specially benefited by such improvements. IN WITNESS WHEREOF, the parties by and through their duly elected officials, have executed this agreement after authority to do so given at a regular meeting of the respective bodies. CITY OF BOTHELL BY/ ATTEST: City Clerk L ALDERWOOD WATER DISTRICT F 11 -3- CITY OF BOTHELL OEPARTWIMT OF PUBLIC Worms ' ROUTE TO: RECEIVED COPY TO DIA. N6R ENT,R. FEB 2 8 1990 MOW- S. FILE NO. C MNIM rr CITY OF BOTHELL �yp�! L.' MUNICIPALITY OF METROPOLITAN SEATTLE DUPUCATEO i Ci�slf�, AMENDMENT TO AGREEMENT FOR SEWAGE DISPOSAL THIS AMENDMENT made as of the v -2-Qt3T day of iso v JAe& between the City of Bothell, a municipal corporation of the State of Washington (hereinafter referred to as the "City") and the Municipality of Metropolitan Seattle, a metropolitan municipal corporation of the State of Washington (hereinafter referred to as "Metro"); WITNESSETH: WHEREAS, the parties have entered into a long term Agreement for Sewage Disposal dated December 1, 1964 , as amended (hereinafter referred to as the "Basic Agreement"); and WHEREAS, an advisory committee composed of elected and appointed officials in the metropolitan area was appointed by the Metropolitan Council to examine the structure of Metro's charges to its participants; and WHEREAS, said advisory committee, following extensive research, study and deliberations, has recommended certain changes in the structure of Metro's charges to its participants and implementation of said changes requires amendment of the Basic Agreement; and WHEREAS, the parties have determined that the recommendations are in the best public interest and therefore desire to amend said Basic Agreement to implement said recommendations; NOW, THEREFORE, it is hereby agreed as follows: 1 Section 1. Amendment of Section 5 (-.1 the Basic Agreement. Section 5 of the Basic Agreement is hereby amended to read as follows: "Section 5. Payment for Sewage Disposal. For the disposal of sewage hereafter collected by the City and delivered to Metro the City shall pay to Metro on or before the last day of each mon--h during the term of this Agreement, a sewage disposal charge determined as provided in this Section 5. 1. For the quarterly periods ending March 31, Jure 30, September 30 and December 31 of each year every Participant shall submit a written report to Metro setting forth: (a) the number of Residential Customers billed by such Participant for local sewerage charges as of the last day of the quarter, (b) the total number of all customers billed for local sewerage charges by such Participant as of such day, and (c) the total water consumption during such quarter for all customers billed for local sewerage charges by such Participant other than Residential Customers. The quarterly water consumption report shall be taken from water meter records and may be adjusted to excluda water which does not enter the sanitary facilities of the customer. Where actual sewage flow from an individual customer is metered, the metered sewage flows shall be reported in lieu of adjusted water consumption. The total quarterly water consumption report in cubic feet shall be divided by 2,250 to determine the number of Residential Customer equivalents represented by each Participant's customers other than single family residences. Metro shall maintain a permanent record of the quarterly customer report:, from each Participant. 2 The City's first quarterly report shall cover the first quarterly period following the date when sewage is first delivered to Metro and shall be submitted within thirty days following the end of the quarter. Succeeding reports shall be made for each quarterly period thereafter and shall be submitted within thirty (30) days following the end of the quarter. 2. (a) To form a basis for determining the monthly sewage disposal charge to be paid by each Participant during any particular quarterly period, Metro shall ascertain the number of Residential Customers and Residential Customer equivalents of each Participant. This determination shall be made by taking the sum of the actual number of Residential customers reported as of the last day of the next to the last preceding quarter and the average number of Residential Customer Equivalents per quarter reported for the four quarters ending with said next to the last preceding quarter, adjusted for each Participant to eliminate any Residential Customers or Residential Customer equivalents whose sewage is delivered to a governmental agency other than Metro or other than a Participant for disposal outside of the Metropolitan Area. (b) For the initial period until the City shall have submitted six consecutive quarterly reports, the reported number of Residential Customers and Residential Customer equivalents of the City shall be determined as provided in this subparagraph (b). On or before the tenth day of each month beginning with the month prior to the month in which sewage from the City is first delivered to Metro, the City shall submit a written statement of the number of Residential Customers and Residential Customer equivalents estimated to be billed by the City during the next succeeding month. For the purpose of determining the basic reported number of Residential Customers and Residential Customer equivalents of 3 the City for such next succeeding month, Metro may at its discretion adopt either such estimate or the actual number of Residential Customers and Residential Customer equivalents reported by the City as of the last day of the next to the last preceding reported quarter. After the City shall have furnished six consecutive quarterly reports the reported number of Residential Customers and Residential Customer equivalents of the City shall be determined as provided in the immediately preceding subparagraph (a). (c) If the City shall fail to submit the required monthly and/or quarterly reports when due, Metro may make its own estimate of the number of Residential Customers and Residential Customer equivalents of the City and such estimete shall constitute the reported znamber for the purpose of determining sewage disposal charges. 3. The monthly sewage disposal charge payable to Metro shall be determined as follows: (a) Prior to July 1st of each year Metro shall determine its total monetary requirements for the disposal of sewage during the next succeeding calendar year. Such requirements shall include the cost of administration, operation, maintenance, repair and replacement of the Metropolitan Sewerage System, establishment and maintenance Df necessary working capital and reserves, the requirements of any resolution providing for the issuance of revenue bonds of Metro to finance the acquisition, construction or use of sewerage facilities, plus not to exceed 1% of the foregoing requirements for general administrative overhead costs. (b) To determine the monthly rate per Residential Customer or Residential Customer equivalent to :be used during said next succeeding calendar year, the total monetary requirements for disposal of sewage as determined in subparagraph 3(a) of this section shall be divided by twelve and the resulting quotient shall be divided by 'the total 4 number of Residential Customers and Residential Customer equivalents of all Participants for the October -December quarter preceding said July 1st; provided, however, that the monthly rate shall not be less than Two Dollars ($2.00) per month per Residential Customer or Residential Customer equivalent at any time during the period ending July 31, 1972. (c) The monthly sewage disposal charge paid by each Participant to Metro shall be obtained by multiplying the monthly rate by the number of Residential Customers and Residential Customer equivalents of the Participant. An additional charge may be made for sewage or wastes of unusual quality or composition requiring special treatment, or Metro may require pretreatment of such sewage or wastes. 4. The parties acknowledge that, by resolution of the Metropolitan Council, Metro may impose a charge or charges directly on the future customers of a Participant for purposes of paying for capacity in Metropolitan sewage Facilities and that such charges shall not constitute a breach of this agreement or any part thereof. The proceeds of said charge or charges, if imposed, shall be used only for capital expenditures or defeasance of outstanding revenue bonds prior to maturity. In the event such a charge or charges are imposed, the City shall, at Metro's request, provide such information regarding new residential customers and residential customer equivalents as may be reasonable and appropriate for purposes of implementing such a charge or charges, 5. A statement of the amount of the monthly sewage disposal charge shall be submitted by Metro to each Participant on or before the first day of each month and payment of such charge shall be due on the last day of such month. If any charge or portion thereof due to Metro shall remain unpaid for fifteen days following its due date, the Participant shall be charged with and pay to Metro interest on 5 the amount unpaid from its due date until paid. at the rate of 6% per annum, and Metro may, upon failure to pay such amount, enforce payment by any remedy available at law or equity. 6. The City irrevocably obligates and binds itself to pay its sewage disposal charge out of the gross revenues of the sewer system of the City. The City further binds itself to establish, maintain and collect charges for sewer service which will at all times be sufficient to pay all costs of maintenance and operation of the sewer system of the City, including the sewage disposal charge payable to Metro hereunder and sufficient to pay the principal of and interest on any revenue bonds of the City which shall constitute a charge upon such gross revenues_ It is recognized by Metro and the City that the sewage disposal charge paid by the City to Metro shall constitute an expense of the maintenance and operation of the sewer system of the City. The City shall provide in the issuance of future sewer revenue bonds of the City that expenses of maintenance and operations of the sewer system of the City shall be paid before payment of principal and interest of such bonds. The City shall have the right to fix its own schedule of rates and charges for sewer service provided that same shall produce revenue sufficient to meet the covenants contained in this Agreement. Section 2. Amendment of Section 6 of the Basic Agreement. Section 6 of the Basic Agreement is hereby amended to read as follows: "Section 6. Res onsibility of the Citv_ The City shall be responsible for the delivery to the Metropolitan Sewerage System of sewage collected by the City, for construction, maintenance and operation of Local Sewerage Facilities, and for the payment of all costs incident to the collection of such sewage and its delivery to the Metropolitan Sewerage System. 6 In addition, the City will undertake continual rehabilitation and replacement of its local sewage facilities for purposes of preventing, reducing and eliminating the entry of extraneous water into such facilities and will expend annually, averaged over five (5) years, an amount equal to two (2) cents per inch of diameter per foot of its local sewage facilities, excluding combined sewers and force mains, for said rehabilitation and replacement. The amount of this expenditure requirement may be increased from time to time by the Metropolitan Council to reflect general inflation. Rehabilitation and replacement projects undertaken pursuant to this section shall be constructed in accordance with criteria adopted by the Metropolitan Council and included in Metro's Rules and Regulations. In the event the City fails to comply with the rehabilitation and replacement expenditure requirements described in this section, the City shall pay such charge as may be determined by Metro for quantities of storm or ground water entering its Local Sewage Facilities in excess of the minimum standard established by the general Rules and Regulations of Metro. Section 3. Amendment of Basic Agreement to Add a New Section. A new Section 18 shall be added to the Basic Agreement to read as follows: "Section 18. Future Amendments. The City agrees to amend and hereby concurs in any amendment to this agreement which incorporates any changes in the terms for sewage disposal and/or payment therefor as may be proposed by Metro and agreed to by those Participants that shall represent, in total, not less than 90% of the Residential Customers and Residential Customer Equivalents then served by the Metropolitan Sewerage System." Section 4. Effective Date of Amendment. This amendment shall take effect at the beginning of the first 7 quarter following the date first Written above with quarter:; beginning January 1, April 1, July 1, and October 1. Section 5. Basic Agreement Unghangec1. Except as otherwise provided in this amendment, all provisions of the basic agreement shall remain in full force and effect as written therein. IN WITNESS WHEREOF; the parties have executed thi Agreement as of the day and year first written above. CITY OF BOTHELL Anne Pflug, City Pia ger ATTEST: Donna Sommerfeld, De tg7,City Clerk PSUNYCIPAL%TY OF METROPOL%TAPE SEATTLE Chair of the Council ATTEST: h"Ak t; Z' ",; "' 8 WOODCREST AGREEMENT E3_- i AGREEMENT 1 MUTUAL AGREEMENT between WOODCP.EST PLANNERS, a Partnership, { in the County of King, State of Washington, hereinafter refer- red to as "Woodcrest"; CITY OF BOTHELL, a municipal corpor- ation, located in King County, State of Washington, herein- after referred to as "The City", and PUGET SOUND MUTUAL SAVINGS ? BANK, a banking corporation organized under the laws of the State of Washington, hereinafter referred to as "The Bank". IN CONSIDERATION of the mutual covenants herein contained, the abovenamed parties agree to the following conditions of this Agreement which is hereby established to fulfill the requirements of the Bothell PUD ordinance and the conditions on the Woodcrest PUD as established by The City Council of The City of Bothell. A. Woodcrest agrees: 1. To establish three (3) escrow accounts in Puget Sound Mutual Savings Bank, downtown branch. The first account will cover storm drainage and retention as indicated on the plans on file with The City in the amount of One Hundred Fifty- eight Thousand Twenty Eight Dollars ($158,028). The second escrow account will cover public improvements and utilities and landscaping as defined by the plans on file with The City in the amount of Two Hundred Thirty-eight Thousand Four Hundred Eighty-six Dollars ($238,486). The third escrow account will cover the offsite sewer as indicated in the conditions established by The City Council of the City of Bothell and in the amount of One Hundred Twenty Thousand ($120,000) . 2. If, after final review by The City Engineer, these cost estimates are deemed low, then Woodcrest agrees to add funds to the different accounts, if The City is not /1 y/7Y arbitrary and capricious in its figures. Said final review is estimated to be days from the date of this Agreement. 3. In addition, the amounts in e. -;crow shall be raised or lowered as determined by the bids received from reputable contractors if accepted and used by Woodcrest and approved by The City. 4. That a maximum of tea (104 ) per cent of: the escrow account established to cover the cost of physical improvements shall remain in the account until the last payment is requested, and said percentage shall be disbursed with the last payment. other payments shall be made on the basis of the percentage of work satisfactorily completed, as sta-:ed in paragraph B-3 of this Agreement. v B. The Bank agrees: 1. That the sum of $158,028 has been established in an escrow account for the purpose of installing storm drainage and retention system, as indicated on the plans on file with The City and shall only be used to install said improvements. That the sum of $238,486 has been established in an escrow account for the purpose of installing all public improvements, utilities, and all landscaping portions of the final develop- ment plan as indicated on the plans ca file with The City, and shall only be used to install said improvements. That the sum of $120,000 has been established in an escrow account for the purpose of installing the offsite sewer improve- ments, as indicated in the conditions set by the City Council of The City of Bothell and shall only be used to install the said improvements. 2. To withhold a maximum of ten (10%) per cent of the escrow account established to cover the costs of the required improvements which shall be disburses. with the final payment. 3. To disburse frown funds in the said three accounts on -2- a basis of percentage of improvements satisfactorily completed, but, no more frequently than monthly. This percentage shall be determined based upon the itemized cost figures dated above and shall be the lesser of the per- centages estimated by The Bank and the Bothell City Engineer and/or its appointee. SEE ADDENDUM - Page 3a. 4. Not to disburse any money from said account until The Bank has received written notice from The City Engineer or its appointee that a specified percentage of the required improvements has been satisfactorily completed and approved by The Bothell City Engineer, or its appointee. C. The City agrees: 1. To accept this Agreement in lieu of a performance bond or in lieu of the completed improvements required in The PUD Ordinance and conditions established by The City Council. 2. To have the City Engineer or its appointee period- ically inspect said improvements while under construction and inspect completed improvements within five (5) days after receiving written notice that the improvement item has been completed_. The City Engineer or its appointee shall notify the Bank and Woodcrest within ten (10) days after recei?'� •J notice, as stated above, and as to the percentage of improve- ments completed. SEE ADDENDUM - Page 3a. THE CITY OF BOTHELL WOODCREST PLANNERS BY: ,,� WARREN O E N, Aut orize BY: ` Partner Date Date PUGET SOUND MUTUAL SAVINGS BANK Date 11-4 t! Zf /� -3- ADDENDUM B. 3(a) If Woodcrest or My of its retained subcontractors fails and refuses to correct construction deficiencies in relation to the plans as now submitted, or will be submitted in the future, then the Bank will pay to the City of Bothell so mucin of those funds as are -necessary (up to the limit of the Escrow accounts) to correct these deficiencies, by the most economical method. This paragraph is to insure to The City that the storm drainage and retention system, the public improvements, utilities, landscaping and oeL�sewlq.re ,completed according to plans submitted tc,4 he ity of "B-o`Tthtll. C. 3• As between the flank and the City, at such time as the City Engineer certifies that any given phase of the ired improvements is 100% complete, this Agreement shall a 'L "o —as to such phase of the improvements. rs —3a— E 1 CONTRACT WHEREAS, the CITY OF BOTHELL (hereinafter referred to as "Bothell"), and WOODCREST PLANNERS, a Washington } partnership, (hereinafter referred to as "Woodcrest"), are desirous of settling all potential differences in one of two alternative manners, as selected by the City, as set forth below; NOW, THEREFORE, in consideration of the mutual covenants herein contained, the parties agree as follows: ALTERNATIVE NO. 1 If the City of Bothell and Woodcrest can agree with Water District No. 104 on a sewer connection into Water District No. 104's facilities, at the City's option, then: (1) Woodcrest will construct an 8" sewer line from Chausee Lumber sewer connection on East Riverside Drive to manhole 75 in Water District No. 104's sewer facilities. (2) Said construction to be to the specifications of Bothell and Water District No. 104, and shall be completed within 120 days of the City's acceptance of this agreement and selection of this alternative. (3) Bothell will refund to Woodcrest the sewer facility charges Woodcrest has paid to Bothell and accept the above described improvements in lieu thereof. ALTERNATIVE NO. 2 (1) Woodcrest will purchase, regardless of cost, in accordance and compliance and pursuant to the terms of Reid, Middleton & Associates, Inc., letter addressed to tor. Ted Uomoto, dated. -August 31, 1978, a copy of which is attached hereto and hereby incorporated by g1717S' --C,� ��7 / this reference, a package lift station, and install into present lift station No. 3. Specifications of said lift station are to be agreed upon by Bothell's City Engineer, and Woodcrest's Engineer, John Phillips. Said package lift station to be installed to Bothell standards and dedicated to Bothell when accepted by it. (2) Woodcrest, at its own cost, will construct an 8" sewer line across the Sammamish River, underneath the pedestrian bridge, and to the Bothell manhole and sewerline approximately 70' from the north end of the pedestrian bridge. Said sewer line to be installed to Bothell's standards and in accordance with the provisions of the Reid, Middleton & Associates, Inc., letter of August 31® 1978, and dedicated to Bothell when accepted by it. Said construction shall be completed within 120 days of the City's acceptance of this agreement and selection of this alternative. Woodcrest agrees to obtain all necessary easements for the installation of said sewer lines and shall bear all costs necessary to obtain the same. (3) Bothell will credit Wcodcrest the amount Woodcrest paid to the City of Bcthell for sanitary sewer facility charges and accept the above described improvements in lieu thereof. (4) The Shorelines Managerrent Permit contains permission for the sewer line to cross the Sammamish River. (5) The following agreemer.ts shall be in effect whether Alternative No. 1 or Alternative No. 2 is followed: a. Woodcrest will construct the following additional'.water facilities: -2- 1. Water Meter Station - North end of project. This station is not required by the City. Woodcrest is to install, at their own expense, to prevent future digups and incumbent inconvenient problems to the widened portion i of 120th Avenue Northeast, the estimated value of which is determined as follows: Contractor's bid price for vault $ 6,500.00 8" water main - 100' at $12.00/foot 1,200.00 Sub total $ 7,700.00 Sales tax 415.80 Total $ 8,115.80 2. PRV Station - In conformance with Bothell's comprehensive water plan, Woodcrest is installing a PRV Station at the intersection of Woodcrest Land and 118th Avenue Northeast. The alternative design is to install individual PRVs at 26 mobile home units. The only reason for PRV is to enable Bothell to utilize this water source for emergency purposes so it will match Bothell's pressure zones, the estimated value of which is determined as follows: Contractor's bid for PRV Station $ 7,000.00 Credit for individual PRV 25 at $35.00 910.00 Sub total $ 6,090.00 Sales tax + 328.00 Total $ 6,418.86 -3- The above items will be or have been installed at Woodcrest's expense regardless of cost and shall be completed within 90 days of execution of this aqreement by the City. b. Woodcrest will con•mract with the City of Bothell to purchase water from the City at a rate charged by Water District No. 79, plus a reasonable markup for administrative charges. C. In said Contract w:Lth the City of Bothell, Woodcrest will agree to indi:mnify, defend and hold the City of Bothell harmless as follows: Woodcrest agrees to indemnify, defend and hold the City of Bothell harmless from claims against Water District a No. 79 and from any and all of the following claims and from any and all expenses, attorneys fees and costs incurred by the City of Bothell or Water District No. 79: 1. Arising out of any action (other than the actions indicated in paragraph c of this paragraph) taken by the City of Bothell which relates in any way to supplying water under this Agreement; 2. Made by or on behalf of customers residing within the geographical limits of Woodcrest. Estates against Water District No. 79 which relate in any way to supplying water under this Agreement; and, 3. The hold harmless agreement shall not hold the City of Bothell harmless for claims ar.ising'out of any use, including emergency use for fire purposes, of this line a,C 1 by the City of Bothell beyond the use by the 158 hookups anticipated in the Woodcrest Estates mobile home park. d. Bothell will credit the sum of $10,000.00 of water facilities charges to Woodcrest for the additions above referred to in the Bothell Water System. e. Bothell will grant to Woodcrest the right to receive a latecomer's charge in proportion to Bothell's reimbursement of sewer facilities charges and construction costs. (i.e., if Bothell, in Alternative No. 1, contributes $20,000.00 in sewer facilities charges and Woodcrest contributed $65,000.00 in construction costs, Bothell will receive 23.538 of latercomer's charges. The actual percentage is to depend on the actual construction cost.) In the case of Alternative No. 2, Woodcrest would be allowed the same formula for reimbursement. The wording of the reimbursement for the latecomer's charge shall be in a separate document. f. The City of Bothell will. -not require building permits of Woodcrest for each individual mobile home which has met State of Washington standards, nor for each individual pit for the mobile homes. A building permit is required for the clubhouse installation. The City of Bothell has not adopted standards or chosen to regulate or set standards for mobile home sites at this time, and will not inspect any of the mobile home pits or the mobile homes.. In addition, Woodcrest will not require the City of Bothell to inspect any of the mobile home pits.or mobile homes. Woodcrest -5- will execute a hold harmless; and indemnity agreement to the City of Bothell agaisest any and all claims by it or by third parties acrainst the City of Bothell for failure to inspect the mobile home pits or mobile homes. g. Whether Alternatives No. 1 or Alternative No. 2 is used, Bothell will allow not more than 35 units to be hooked up to the: present sewer system until the alternate accepteel is operable and accepted by the City. Woodcrest shall proceed with all due diligence immeeliately upon one of the Alternatives having been selected by the City_ Woodcrest agrees to pay for the additional maintenance for the seweraeie and pump stations if such occurs as a result of the permission granted herein to connect up to 35 units on to the present sewer system prior to the selected alternative being constructed, operable and accepted by the City from November 1, 1978, forwiLrd until the alternate has been constructed as operable and accepted by the City. The City of Bothe'..1 will use every effort to facilitate Woodcrest's construction of the offsite sewer facility. h. Woodcrest covenant:; and agrees that it will proceed to dismiss its lawsuit against the City of Bothell on Ordinance=_ 858, with prejudice, and without cost to either party, and pay the sum of $200.00 per unit in lieu of park fees. The procedure for payment of said fee will be to use the $5,000.00 cash bond tha= is presently posted and Woodcrest agrees to submit a weekly report to -6- the City of Bothell as to the number of homes and pay any difference at the time the report is submitted. DATED this lst day of September, 1978. Warren Otteson, authorized to sign as Partner for WOODCREST PLANNERS s " DATED this day of �+�-t 1978_ CITY OF BOTHELL i By 1�C'«� r STATE OF WASHINGTON ) j ) ss: COUNTY OF KING' ) On this X day of September, 1978, before me, the undersigned, a7 -Notary Public in and for the State of Washington, duly commissioned and sworn, personally appeared WARREN OTTESON, to me known to be the authorized partner to sign the foregoing agreement, of WOODCREST PLANNERS, who executed the foregoing instrument; and acknowledged the said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that they were authorized to execute the said instrument and that the seal affixed is the corporate seal of said corporation. WITNESS my hand and official seal hereto affixed the day and year first above written. Notary Public in and for the StateWas in n, residing at j> >O =r i SUPPLEMENT TO AGREEMENT l WHEREAS, the CITY OF BOTHELL (hereinafter referred J! to as BOTHELL) and WOODCREST PLANNERS (hereinafter referred to } as WOODCREST) entered into an Agreement on September 7, 1975, allowing WOODCREST to hookup 35 mobile home units to the present Bothell Sewer System, and WHEREAS, WOODCREST is unable to install the offsite sewer system at the present time with one of the reasons being the need for the CITY OF BOTHELL to obtain permission from King County to cross the Sammamish River, and WHEREAS, the consulting engineer for the CITY of BOTHELL has investigated the system and has concluded that it should not jeopardize the city sewer system nor cause extra expense for maintenance if WOODCREST agrees to conditions expressed in'this contract; THEREFORE, in consideration of the mutual covenants herein contained, the parties agree as follows: (1) WOODCREST shall be allowed to connect 20 additional occupied mobile home units to the present BOTHELL sewer system upon the following terms and conditions: (2) WOODCREST shall contract with a septic tank pumping company that can provide for emergency pumping of the three pump stations or manholes as required. Said pumping to be at WOODCREST'S cost. In addition, WOODCREST hereby authorizes the CITY OF BOTHELL to order emergency pumping service from said company as it deems necessary up to a limit of $2,000.00 without further authorization from WOODCREST. The pumping service shall be available on a 24 hour basis, seven days a week, with a response time of two hours or less. If the designated pumping service is not available, BOTHELL may order another septic sertrice at WOODCREST'S costs to -1- perform emergency pumping, (not to exceed $2,000.00). (3) WOODCREST will agree to pay for the extra monitoring and inspection by the coidsulting engineers or City staff as required by the CITY. The additional monitoring by City staff is estimated to be three-fourths of a staff day per week. If the WOODCREST system adds unusual loads or othrewise causes an overload, the additional staff hours required to correct the system will be paid by WOODCREST at the above rate. WOODCREST will pay for the engineering costs related to the supervision of maintenance crews, monitoring flow, and cleaning lines. WOODCREST will pay all costs incurred by the City including staff time, consulting I engineer's time and attorneys® fees directly related to the obtaining of this agreement through December 31, 1978. WOODCREST will pay all costs incurred by the CITY OF BOTHELL v including staff time, consulting engineer's time, attorneys' fees relating to this Agreement, after December 31, 1978, not to exceed $2,000.00. (4) WOODCREST agrees to pay one-half the cost of replacing the 8" sewer line between manhole #3 and manhole #4 (Sheet L-10). This 160° of 8" line is a major problem area and has caused frequent stoppage. The estiMELted cost of re- placing this 8" line is $3,200.00. The CITY shall pay one- half of the actual construction and material costs not to exceed $1,600.00, including plans. The rest of the cost shall be born by WOODCREST. CITY is to p::ovide permits at no cost to WOODCREST. CITY is to provide the easements necessary for replacing the line. WOODCREST will install the line to City standards and specifications and the line must be inspected by the City. In the event CITY is unaole to provide easements necessary by the time the offsite utility system e is ready to be constructed,'this provision shall not be appli- cable. -2- (5) WOODCREST will pay for the cost of cleaning and flushing the lines that have silted up due to the stormwater infiltration allowed by WOODCREST over the past couple of months and supervision of the same. Cleaning, rodding and flushing will be under the supervision of Giaudrone & Strong. (6) WOODCREST will apply ahead of time to the CITY OF BOTHELL to acquire approval to allow occupancy of each mobile home to be connected to the system above 35. Lot location for the individual unit must receive prior approval by the City. (7) In the event there are any enforcement problems with this Agreement, WOODCREST will pay the CITY OF BOTHELL attorneys' fees and costs in obtaining enforcement, including the necessary court orders. v (8) This Agreement is to be considered an Addendum to that certain Contract entered into between the parties on September 7, 1978 dealing with offsite sewer facilities and does not release the parties of the obligations described therein. However, once the installation of the offsite sewer facilities contemplated in the September 7, 1978, agreement is completed and accepted by the CITY, WOODCREST'S duty under this Supplemental Agreement shall cease. (9) In addition, WOODCREST shall hold the CITY OF BOTHELL harmless from any and all damages, costs or liabilities, caused by the additional inflow of WOODCREST units on the present sewer system. ,� DATED this 9 day of January, 1979. / WQOD ST P WARREN OTTtSON, authorized to sign as Partner for WOODCREST PLANNERS, a Washington PartnerE CITY OF BOTHELL: DATED: -3- APPENDIX B SEPA CHECKLIST SEPA ENVIRONMENTAL CHECKLIST Purpose of checklist. Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for applicants: This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use "not applicable" or "does not apply" only whenoy u can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision-making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies. Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of checklist for nonproject proposals:h� elp] For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FORNONPROJECT ACTIONS (part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non - projects) questions in Part B - Environmental Elements —that do not contribute meaningfully to the analysis of the proposal. A. Backgroundhjhel 1 1. Name of proposed project, if applicable: theipl City of Bothell Wastewater Comprehensive Plan Update SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 1 of 15 2. Name of applicant: f help] City of Bothell 3. Address and phone number of applicant and contact person:h[ 6121 Don Fiene 18415 101'Ave NE Bothell, WA 4. Date checklist prepared:hj. 6121 March 9, 2018. 5. Agency requesting checklist: Lhelpj Washington State Department of Ecology 6. Proposed timing or schedule (including phasing, if applicable):hj elpJ, The Plan provides a schedule of improvements identified for construction for the 6 year and 20 year planning periods 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain.hf elpl No- This proposal is the result of a Sewer Comprehensive Plan. Recommendations for capital improvements are included in the Plan. Future plan updates or developments unknown to the City at this time may identify wastewater system needs that are not identified in the present plan. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal.hel Projects scheduled for construction will have a SEPA review by the City of Bothell at the time of construction, unless it is determined that they are exempt. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. jLjeIPj No. 10. List any government approvals or permits that will be needed for your proposal, if known.hI elpl The Plan requires the approval of Ecology. The Plan will also be distributed to the King County Department of Natural Resources, Woodinville Water District, Northshore Utility District and Alderwood Water and Wastewater District. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 2 of 15 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.)h[ el The City of Bothell Wastewater Comprehensive Plan is a planning document describing the location and type of facilities needed to provide wastewater service through 2036. It is used as a resource for public works staff, public officials and state regulatory agencies The Plan describes management, standard, policies, service area, geography, quality, infrastructure, operations, finance and other aspects of the City of Bothell wastewater management system The Plan will be used to plan and finance capital improvements needed to provide sewer service into the future. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. Lhelpj The project area includes the City's sewer service Area. B. ENVIRONMENTAL ELEMENTShI elpJ 1. Earthhj eA a. General description of the site:h[ eAl (circle one): Flat, rolling, hilly, steep slopes, mountainous, other b. What is the steepest slope on the site (approximate percent slope)?hj elnl Slopes within the Bothell service area as steep as 70 %, however, the areas being served are the developed urban areas c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. Lhe1Pj Soils will be considered on a project specific basis d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe.hL elpl The steep slopes in some areas are subject to instability during seismic activity. Slope stability will be determined on a project specific basis SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 3 of 15 e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill.h[ elnl No filling or grading will occur at this time. Grading and fill quantities will be developed along with permits and approvals for specific projects f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe.hL_do This will be determined on a project specific basis.. The construction specifications will address erosion control measures to minimize potential impact to surface waters and will follow best management practices. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)?hL elpl This will be determined on a project specific basis h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any:hI elpl Stormwater BMPs will be employed for each project. An erosion control plan will be developed for each project and approved by the City. 2. Airhj elpl a. What types of emissions to the air would result from the proposal during constructionLoperation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known.h[ elpl Exhaust from equipment and dust will be the primary sources of emissions during the construction of proposed projects. Construction impacts will be localized and temporary. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. jhelDI Not applicable. c. Proposed measures to reduce or control emissions or other impacts to air, if any:hj elpl Dust suppression measures and minimization of vehicle idling will be implemented during construction projects 3. Water thelpj a. Surface Water: 1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into.hl elpl The Sammamish River, North Creek, Little Bear Creek, Swamp Creek and Perry Creek are all within the border of the sewer service area. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 4 of 15 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans.hj elpl This will be determined on a project specific basis 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. jbielp Not applicable. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known.hI LIO Not applicable. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan.hel This will be determined on a project specific basis 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge.hj elp] No discharge of waste materials into surface waters will occur as a result of the Plan. b. Ground Water: 1) Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. JLelp Not applicable. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals... ; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the systems) are expected to serve.hj elPl Not applicable. c. Water runoff (including stormwater): 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. jhelpj This will be determined on a project specific basis 2) Could waste materials enter ground or surface waters? If so, generally describe.hj elIw This will be determined on a project specific basis SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 5 of 15 3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, describe.h[ elpl This will be determined on a project specific basis d. Proposed measures to reduce or control surface, ground, and runoff water, and drainage pattern impacts, if any: [help] Construction specifications for proposed projects will require the implementation of measures to control or eliminate surface, ground, and runoff water impacts, as per regulations 4. Plantshel j a. Check the types of vegetation found on the site: Ihel x_deciduous tree: alder, maple, aspen, other _x evergreen tree: fir, cedar, pine, other —x—shrubs _x_grass _pasture crop or grain Orchards, vineyards or other permanent crops. _x_ wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other _x_water plants: water lily, eelgrass, milfoil, other —x—other types of vegetation b. What kind and amount of vegetation will be removed or altered? theIw This will be determined on a project specific basis c. List threatened and endangered species known to be on or near the site. [help] None known. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any:hf elal Revegetation will be required for each project to meet City approval. e. List all noxious weeds and invasive species known to be on or near the site.h[ elp] This will be determined on a project specific basis SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 6 of 15 5. Animalshj elp] a. List any birds and other animals which have been observed on or near the site or are known to be on or near the site.hL elpl Examples include: birds: hawk, heron, eagle, songbirds, other:crows mammals: deer, bear, elk, beaver, other: fish: bass, salmon, trout, herring, shellfish, other b. List any threatened and endangered species known to be on or near the site.hj elp] Bull Trout and Puget Sound Chinook. c. Is the site part of a migration route? If so, explain.hI elpl The sewer service area is located within the Pacific Flyway; a regional migratory bird route that includes much of Western Washington. d. Proposed measures to preserve or enhance wildlife, if any:hel This will be determined on a project specific basis. Individual SEPA review will be performed on each project, as required e. List any invasive animal species known to be on or near the site.hj elo This will be determined on a project specific basis Individual SEPA review will be performed on each project, as required 6. Energy and Natural ResourceshI elpl a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc.hj eip] Fuel and lubricant will be consumed by machinery during construction. Lift stations run on electric power with diesel and propane standby generators b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. hj elp]. No. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: LLeipl Not applicable. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 7 of 15 7. Environmental Health jhelpl a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. tLiejpl None anticipated but will be determined on a project specific basis. 1) Describe any known or possible contamination at the site from present or past uses.h[ elp� This will be determined on a project specific basis 2) Describe existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. [hel�j This will be determined on a project specific basis 3) Describe any toxic or hazardous chemicals that might be stored, used, or produced during the project's development or construction, or at any time during the operating life of the project. hL elJ This will be determined on a project specific basis 4) Describe special emergency services that might be required. jhelpj None required. 5) Proposed measures to reduce or control environmental health hazards, if any: LheW Compliance with industrial safety standards in design, construction on operation offacilities. b. Noise Vielpl 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? jheW Ambient noise is primarily from traffic and will not affect the projects proposed in the Plan. 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indi- cate what hours noise would come from the site. LLelpi To be determined on a project specific basis 3) Proposed measures to reduce or control noise impacts, if any: jhel Construction equipment will be limited to daylight hours Mufflers and other soundproofing equipment on construction machinery will be properly operated and maintained. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 8 of 15 8. Land and Shoreline Use hj elp� a. What is the current use of the site and adjacent properties? Will the proposal affect current land uses on nearby or adjacent properties? If so, describe.hi eld Land use in the area is a mixture of residential, commercial, industrial, and public facilities Pipeline work will be located within public rights-of-way and easements b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to other uses as a result of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or nonforest use?hj_elpl No, the project site has not been used as working farmlands or working forest lands 1) Will the proposal affect or be affected by surrounding working farm or forest land normal business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how:hj e11 No. c. Describe any structures on the site.h[ elp] This will be determined on a project specific basis d. Will any structures be demolished? If so, what?hj_elpl This will be determined on a project specific basis e. What is the current zoning classification of the site?[heIVI Zoning classifications are established by the City of Bothell and are a mixture of single family, multi- family, commercial, industrial and public use. f. What is the current comprehensive plan designation of the site?hI eIp] The current comprehensive plan designations are consistent with the zoning classifications in the area g. If applicable, what is the current shoreline master program designation of the site?hI elp] Not applicable. h. Has any part of the site been classified as a critical area by the city or county? If so, specify.hI elp1 No. i. Approximately how many people would reside or work in the completed project?hj ello Not applicable. j. Approximately how many people would the completed project displace?hj elpl Not applicable. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 9 of 15 k. Proposed measures to avoid or reduce displacement impacts, if any:h[ elpl Not applicable. L. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: ILiejpJ All projects must comply with the City of Bothell's land use plans m. Proposed measures to reduce or control impacts to agricultural and forest lands of long-term commercial significance, if any:hel Not applicable. 9. Housing hel a. Approximately how many units would be provided, if any? Indicate whether high, mid- dle, or low-income housing. hel Not applicable. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. ihelpl Not applicable. c. Proposed measures to reduce or control housing impacts, if any: JLielpl Not applicable. 10. Aestheticshj elal a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? hel This will be determined on a project specific basis b. What views in the immediate vicinity would be altered or obstructed? the None. b. Proposed measures to reduce or control aesthetic impacts, if any: [helpl This will be determined on a project specific basis IL Light and Glare[Lielpi a. What type of light or glare will the proposal produce? What time of day would it mainly occur?"el Not applicable. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 10 of 15 b. Could light or glare from the finished project be a safety hazard or interfere with views?hI elp] Not applicable. c. What existing off-site sources of light or glare may affect your proposal?hj elpj Not applicable. d. Proposed measures to reduce or control light and glare impacts, if any:hI elp] Not applicable. 12. Recreationhj elp] a. What designated and informal recreational opportunities are in the immediate vicinity? jheW This will be determined on a project specific basis b. Would the proposed project displace any existing recreational uses? If so, describe.hj el This will be determined on a project specific basis c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any:hj 6 This will be determined on a project specific basis 13. Historic and cultural preservation hel a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers ? If so, specifically describe. eel This will be determined on a project specific basis. b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources.hj elpJ This will be determined on a project specific basis c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc.hf h"11 Not applicable. d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that may be required. theAl This will be determined on a project specific basis SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 11 of 15 14. Transportation jhelpl a. Identify public streets and highways serving the site or affected geographic area and describe proposed access to the existing street system. Show on site plans, if any. thel This will be determined on a project specific basis b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop?hL d This will be determined on a project specific basis c. How many additional parking spaces would the completed project or non -project proposal have? How many would the project or proposal eliminate? [helpl Not applicable. d. Will the proposal require any new or improvements to existing roads, streets, pedestrian, bicycle or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private).heellp] This will be determined on a project specific basis e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe.hel This will be determined on a project specific basis. f Flow many vehicular trips per day would be generated by the completed project or proposal? If known, indicate when peak volumes would occur and what percentage of the volume would be trucks (such as commercial and nonpassenger vehicles). What data or transportation models were used to make these estimates? hel This will be determined on a project specific basis g. Will the proposal interfere with, affect or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe.h[ elpl Not applicable. h. Proposed measures to reduce or control transportation impacts, if any: thglpl Titis will be determined on a project specific basis 15. Public Services 1hee1 4 a. Would the project result in an increased need for public services (for example: fire protection, police protection, public transit, health care, schools, other)? If so, generally describe.h.[ elp1 No. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 12 of 15 b. Proposed measures to reduce or control direct impacts on public services, if any.hl el�j This will be determined on a project specific basis 16. Utilitieshj elp1 a. Circle utilities currently available at the site:h[ elp� electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other phone, cable television b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed.Diel-pi This will be determined on a project specific basis C. Signaturehl�el 1 The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature: Name of signee Position and Agency/Organization Date Submitted: D. supplemental sheet for nonproject actionshf elp� (IT IS NOT NECESSARY to use this sheet for project actions) Because these questions are very general, it may be helpful to read them in conjunction with the list of the elements of the environment. When answering these questions, be aware of the extent the proposal, or the types of activities likely to result from the proposal, would affect the item at a greater intensity or at a faster rate than if the proposal were not implemented. Respond briefly and in general terms. 1. How would the proposal be likely to increase discharge to water; emissions to air; pro- duction, storage, or release of toxic or hazardous substances; or production of noise? Plan sewer projects and sewer system maintenance is intended to prevent environmental and property damage resulting from sanitary sewer overflows SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 13 of 15 Proposed measures to avoid or reduce such increases are: Maintenance of existing sewer facilities and capacity improvements for lift stations and sewer mains should reduce the possibility of this occurrence. 2. How would the proposal be likely to affect plants, animals, fish, or marine life? Proposed projects should prevent environmental impacts of sewer spills, which could harm plants and animals. Proposed measures to protect or conserve plants, animals, fish, or marine life are: Planning the sewer system is intended to protect the environment and public health. 3. How would the proposal be likely to deplete energy or natural resources? Not applicable. Proposed measures to protect or conserve energy and natural resources are: The City plans to construct a gravity main to abandon Lift Station No. 4, which will reduce pumping requirements and conserve energy. 4. How would the proposal be likely to use or affect environmentally sensitive areas or areas designated (or eligible or under study) for governmental protection; such as parks, wilderness, wild and scenic rivers, threatened or endangered species habitat, historic or cultural sites, wetlands, floodplains, or prime farmlands? Not applicable. Proposed measures to protect such resources or to avoid or reduce impacts are: Not applicable. 5. How would the proposal be likely to affect land and shoreline use, including whether it would allow or encourage land or shoreline uses incompatible with existing plans? Not applicable. Proposed measures to avoid or reduce shoreline and land use impacts are: Not applicable. 6. How would the proposal be likely to increase demands on transportation or public services and utilities? Not applicable. Proposed measures to reduce or respond to such demand(s) are: Not applicable. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 14 of 15 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. Not applicable. SEPA Environmental checklist (WAC 197-11-960) July 2016 Page 15 of 15 APPENDIX C DESIGN STANDARDS Chapter 6 SANITARY SEWERS City of Bothell - DESIGN AND CONSTRUCTION STANDARDS AND SPECIFICATIONS 2018 2018 Bothell Design and Construction Standards Sections 6-1 General 6-1.1 Performance Bonds 6-1.2 Maintenance Bonds 6-2 Permits 6-3 Easements 6-4 Alignment Tolerance 6-5 Construction Plans 6-5.1 Required Notes On Plans 6-5.2 As-Builts 6-6 Manholes 6-6.1 Section Description 6-6.2 Materials 6-6.3 Construction Requirements 6-7 Sewer Main 6-7.1 Materials 6-7.2 General Requirements 6-7.3 Underground Utilities 6-7.4 Pipe Bedding 6-7.5 Laying Sewer Pipe 6-7.6 Plugs And Connections 6-7.7 Jointing 6-7.8 Jacking, Auguring or Tunneling 6-7.9 Size 6-7.10 Slope 6-7.11 Pavement Patching 6-7.12 Cleaning And Testing Of Sanitary Sewers 6-7.13 Exfiltration Test 6-7.14 Television Inspection 6-8 Acceptance Of Sanitary Sewer Systems 6-9 Sanitary Side Sewers 6-9.1 Description 6-9.2 Materials 6-9.3 General 6-9.4 Side Sewer Construction 6-9.5 Sizing Side Sewers 6-9.6 Slope Of Side Sewers 6-9.7 Fittings and Cleanouts For Side Sewer Updated January 2018 6-9.8 Tracer Tape 6-9.9 Testing Of Side Sewers 6-9.10 Side Sewer As-Builts 6-10 Septic Tanks 6-11 Lift (Pump) Stations 6-12 Grease Traps and Interceptors 2018 Bothell Design and Construction Standards 6-2 Updated January 2018 2018 Bothell Design and Construction Standards 6-1 GENERAL The City of Bothell provides sewer service to approximately 50 percent of the city. This section of the Bothell Standards pertains to the City's sewer service area only. For information on sewer requirements outside the City's sewer service area, please contact the appropriate sewer utility district. All sanitary sewer mains, side sewers, sanitary sewer manholes, and sanitary sewer facilities shall be designed and constructed in accordance with the latest issue or revision of the Criteria for Sewage Works Design (Orange Book) published by the Washington State Department of Ecology, the WSDOT/APWA Standard Specifications and WSDOT Standard Plans, and the Bothell Standards and Details for sanitary sewers. All connections to King County Wastewater Treatment Division facilities shall conform to King County Wastewater Treatment Division standards. A sanitary sewer main extension shall be constructed when the property does not front on a sewer main. The extension shall be to a point at least 5 feet beyond the farthest edge of the property, or as directed by the Public Works Director. Sewer main improvements shall be constructed when the existing sewer main is not adequate for the proposed increased use (criteria used to determine adequacy include, but are not limited to, age, pipe diameter, type, and conditions of existing sewer mains). The City's sewer system comprehensive plan, found in the Capital Facilities Element of the Imagine Bothell... Comprehensive Plan, and TV inspection results shall be the primary resources utilized to determine adequacy. The improvements shall extend from the project to a point where the system is deemed reliable. The improvements shall be consistent with the Bothell Standards for new construction and must be approved by the Public Works Director. All sanitary sewer pipe to be installed shall be structurally sound for the design depth. All requests for inspections and for witnessing tests shall be scheduled with the City construction inspector by calling the inspection request line at least 24 hours in advance, and no more than 7 days in advance. Failure to give adequate notice may result in delays to the work for required inspections. All oils, grease, and contaminants from underground parking facilities shall drain into the sanitary sewer systems, through a grease interceptor. 6-1.1 PERFORMANCE BONDS Before any permit is issued, the developer shall comply with all provisions of Section 1-5 GUARANTEES, BONDS, AND INSURANCE. 6-1.2 MAINTENANCE BONDS Before any permit is issued, the developer shall comply with all provisions of Section 1-5 GUARANTEES, BONDS, AND INSURANCE. 6-3 Updated January 2018 2018 Bothell Design and Construction Standards 6-2 PERMITS In addition to the appropriate permits listed in Section 1-6, additional permits may be required by the City, Washington Department of Fish & Wildlife, Department of Ecology, King County Wastewater Treatment Division, Snohomish County, etc. The developer shall submit copies of these approved permits to the City of Bothell before the City will issue a right-of-way invasion permit. Before any permit is issued to allow working the public right-of-way, the developer shall provide proof of insurance to the City as described in Section 1-5.3. 6-4 Updated January 2018 2018 Bothell Design and Construction Standards 6-3 EASEMENTS All sewer mains not located in the public right-of-way, that are to be maintained by the City, shall be located within a tract. When creation of a tract is not possible, the sewer main shall be centered within easements granted to the City. All easements shall meet the requirements of Section 1-9.3. If the sewer is placed deeper than 7.5 feet, the easement width shall be at least 2 times the burial depth of the sanitary sewer. Carsonite markers shall be installed every 50 feet and at all structures when the sewer main is not installed in the roadway. Easements shall be fenced, with paved access to manholes. 6-5 Updated January 2018 2018 Bothell Design and Construction Standards 6-4 ALIGNMENT TOLERANCE 1. Maximum deviation from established line and grade shall be 1/32 inch per inch of pipe diameter, and '/2 inch per pipe length. 2. No adverse grade in any pipe length will be permitted. 3. The maximum deviation from established line and grade between two successive joints shall be 1/3 of the amounts specified above. 6-6 Updated January 2018 2018 Bothell Design and Construction Standards 6-5 CONSTRUCTION PLANS See Section 1-9 for construction plans requirements. 6-5.1 REQUIRED NOTES ON PLANS The following standard notes are required on all sanitary sewer plans: 1. All sewer lines, side sewers, sanitary sewer manholes, and sanitary sewer facilities shall be designed and constructed in accordance with the latest issue or revision of the Criteria for Sewage Work Design (Orange Book) published by the Washington State Department of Ecology, the WSDOT/APWA Standards Specifications and WSDOT Standard Plans and the Bothell Standards for sanitary sewers. All connections to King County Wastewater Treatement facilities shall conform to the standards established by King County Wastewater Treatment Division. 2. A preconstruction meeting shall have been conducted and a 24-hour notice provided to the City prior to starting new construction. The developer shall arrange the preconstruction meeting with all concerned parties and obtain any and all required permits from the City and other agencies, prior to starting construction. The developer shall also notify the City construction inspector at least 24 hours in advance of backfilling all construction. 3. The developer must have a set of City -approved plans on site at all times during the course of construction. 4. Before any construction may occur, the developer shall have City -approved signed plans, all City, county, state, federal, and other required permits, and shall have posted all required bonds. 5. All existing structures shall remain accessible at all times. 6. Sanitary sewers are to be centered in easements with a minimum width of 15 feet. 7. Minimum cover over sanitary sewer pipe is to be 5 feet, unless otherwise shown and approved by the Public Works Director. 8. Tests shall be observed and inspected by the City construction inspector. 9. All damages to public or private property, incurred by the developer during the course of construction shall be promptly repaired to the satisfaction of the City construction inspector before project approval or release of the performance bond. 10. No part of the sanitary sewer system shall be put into use until it has been tested, inspected, videoed, and approved by the City construction inspector. A copy of pipe inspection video shall submitted to the City. 11. The developer shall call the Utility Notification Center at 1-800-424-5555 at least 48 hours before digging or grading operations occur. 12. The developer shall verify existing utility locations, whether or not these utilities are shown on the plans. The developer shall exercise all care to avoid damage to any utilities. If conflicts with existing utilities arise during construction, the developer shall notify the City construction inspector and any changes required shall be approved by the Public Works Director prior to commencement of related construction on the project. 13. All requests for inspections and for witnessing tests shall be scheduled with the City construction inspector at least 24 hours in advance, and no more than 7 days in 6-7 Updated January 2018 2018 Bothell Design and Construction Standards advance. Failure to give adequate notice may result in delays to the work for required inspections. 14. All sewer main extensions within the public right-of-way or in easements must be staked for line and grade prior to starting construction. 15. As part of a sewer main extension, the ladder and cone shall be rotated, if the ladder is over the channel of manhole. 16. Whenever a new sewer main/side sewer replaces an existing sewer main/side sewer, the developer shall abandon the existing at the sewer main, and shall cap or plug the abandoned sewer main. The plans shall show the size and location of all existing sewer facilities with respect to the new connection and abatement points. Whenever a replacement side sewer is constructed and connected to an existing sewermain, the side sewer shall be constructed as new, according to Bothell Standards. 17. Before the City accepts sanitary sewer improvements, the developer shall supply the City construction inspector with mylar as-builts of the sanitary sewer system bearing the stamp and signature of a registered professional engineer, or a registered land surveyor in a format approved by the City. The developer shall supply digital file of the construction plans in addition to mylar as-builts. The City construction inspector must review and approve all as-builts. The developer shall make all changes to the as-builts as directed by the City construction inspector before the City will approve and accept the as-builts. 6-5.2 AS-BUILTS See Section 1-14 for as -built requirements. 6-8 Updated January 2018 2018 Bothell Design and Construction Standards 6-6 MANHOLES 6-6.1 SECTION DESCRIPTION This work shall consist of constructing manholes in accordance with the Bothell Standards and with Section 7-05 of the WSDOT/APWA Standard Specifications. Where conflicts occur, the Bothell Standards shall have precedence over Section 7-05 of the WSDOT/APWA Standard Specifications. 6-6.2 MATERIALS Manholes shall be constructed of precast units in accordance with Standard Detail 621. Any request to deviate from this detail must be reviewed by the Public Works Director. Manholes shall be constructed in accordance with AASHTO M-199 (ASTM C 478), unless otherwise shown on plans or noted in WSDOT/APWA Standard Specifications. All reinforced cast -in-place concrete shall be Class 4000. Non -reinforced concrete in the channel and shelf shall be Class 3000. All precast concrete shall be Class 4000. Manhole channels shall be Class 3000 concrete. When using adjustment rings on top of the cone or flat top, one single 12 inch precast concrete (masonry) ring or a maximum of three 4 inch precast concrete rings may be used for adjustment of the casting to final street grade. Refer to Detail 621. Use no bricks or wood to raise iron. Precast bases shall be furnished with cutouts, or may be core drilled in the field. All base reinforcing steel shall have a minimum yield strength of 60,000 psi and be placed in the upper half of the base with 1 inch minimum clearance. Cutout hole size is equal to pipe outer diameter plus manhole wall thickness. Maximum hole size is 36 inches for a 48 -inch manhole and 42 inches for a 54 -inch manhole. Minimum distance between holes is 8 inches (measured on the inside of the manhole). A 1 foot precast section is required below the cone or flat top. Manhole size depends on sizes, location, and numbers of holes for pipes. Manhole design and size shall be approved and warranted by the manhole supplier. Joints between manhole sections shall be rubber gasket and mortared inside and out. Standard precast cones shall provide reduction from 48 inches to 24 inches with a height not less than 18 inches and from 54 to 24 inches with a height not less than 24 inches. Standard flat slab covers shall be at least 8 inches thick and shall conform to the outer dimension of the standard sections upon which they are to be placed. For heights over 25 feet, the manhole base slab design shall be designed by a structural engineer. 6-9 Updated January 2018 2018 Bothell Design and Construction Standards 6-6.3 CONSTRUCTION REQUIREMENTS 6-6.3.1 Bedding Unless otherwise directed by the Public Works Director, manholes constructed with precast base sections or cast -in-place sections shall be placed to grade upon 6 inches minimum depth of crushed surfacing base course meeting the requirements of Section 9-03.9(3) of the WSDOT/APWA Standard Specifications. The crushed surfacing base course must be compacted to 95 percent maximum density. 6-6.3.2 Joints Joints between precast manhole elements shall be rubber gasketed in a manner similar to pipe joints conforming to ASTM C-443 and they shall be grouted inside and out. Shop drawings of the joint design shall be submitted to the Public Works Director for approval prior to manufacture. Completed joints shall show no visible leakage and shall conform to the dimensional requirements of ASTM 478. 6-6.3.3 Manhole Channels All manholes shall be channeled, unless otherwise approved by the Public Works Director. Channels shall match existing sewer grades. Channels shall converge with smooth transitions rounded into well -finished junctions. Channel sides shall be carried up vertically to the crown elevation of the various pipes. Channel width shall be wide enough to accept a vactor tube for maintenance. Concrete shelves between channels shall be smoothly finished, warped evenly, and sloped to drain. All manholes shall have a minimum drop of 0.10 feet to a maximum drop of 1.0 foot between the invert in and the invert out. 6-6.3.4 Manhole Pipe Connections All pipes entering or leaving the manhole shall be core drilled to the size of the Kor-N-Seal boot (or approved equal) manufacturer's specifications for the pipe size being used. Flexible pipe joint shall be placed within 2 feet of the outside face of the manhole. The flexible joint shall be placed on firmly compacted bedding, particularly within the area of the manhole excavation, which normally is deeper than that of the sewer trench. Pipe connected to manholes shall be provided with a Kor-N-Seal boot (or approved equal) manhole adapter, complete with gasket, and shall be approved by the Public Works Director. 6-10 Updated January 2018 2018 Bothell Design and Construction Standards 6-6.3.5 Steps Manholes 3 feet and deeper shall have steps as per Standard Detail 643, and shall be installed on sides of manholes, opposite of pipe and channels where possible. First step shall be 18 to 24 inches from top of casting. 6-6.3.6 Connections to Existing Manholes The developer shall verify invert elevations prior to construction. The crown elevation of laterals shall be the same as the crown elevation of the incoming pipe, unless specified. The existing base shall be reshaped to provide a channel equivalent to that specified for a new manhole. The developer shall excavate completely around the manhole to prevent unbalanced loading. The manhole shall be kept in operation at all times and the necessary precautions shall be taken to prevent debris or other material from entering the sewer, including a tight pipeline bypass through the existing channel, if required. The developer shall core drill to the size of the Kor-N-Seal boot (or approved equal), according to the manufacturer's specifications for the size of pipe used. Jackhammers shall not be used. The developer shall provide protective clothing and equipment (coveralls, gloves, boots, head covering, goggles, respirators) to crews working with asbestos cement pipe in order to ensure the workers' exposure to asbestos material is at or below the limit prescribed in WAC 296-62-07705. Asbestos cement pipe shall be cut with a reed wheel cutter with controlled, flowing water. Contaminated clothing shall be transported in sealed, impermeable bags and labeled. Asbestos cement pipe shall be left and buried in the trench. 6-6.3.7 Spacing Maximum spacing of manholes shall be 300 feet, unless approved by the Public Works Director. All manholes are to be accessible to maintenance vehicles. A manhole is required at any change in pipe slope, alignment, or size. Manholes are not allowed in a fill section, unless base is on a cut section. A manhole is required at the ends of all sewer mains, unless a cleanout is specifically approved by the Public Works Director. Prefer manhole for camera access. Manholes not set in the roadway must have paved asphalt access, at least 12 feet wide, to and including the manhole pad. 6-11 Updated January 2018 2018 Bothell Design and Construction Standards 6-7 SEWER MAIN 6-7.1 MATERIALS Sanitary sewer pipe shall meet the following requirements: 1. PVC Sewer Pipe: Polyvinyl Chloride (PVC) sanitary sewer pipe shall conform to the requirements of ASTM D-3034 SDR -35. 2. Ductile Iron Sewer Pipe: Ductile iron sanitary sewer pipe shall conform to ANSI A- 21.51 or AWWA C-151 and shall be cement mortar lined, push -on joint or mechanical joint. The ductile iron pipe shall be Class 50, unless otherwise approved. 6-7.2 GENERAL REQUIREMENTS No broken or defective sewer pipe or related materials shall be used. The maximum trench width (from the foundation to 12 inches above the pipe) shall be 40 inches for pipe with an inside diameter of 15 inches or less. For pipe with an inside diameter of 18 inches or more, the maximum trench width shall be 1.5 times the inside diameter plus 18 inches. (see Standard Details 470 and 471). If the maximum trench width is exceeded without authorization from the City construction inspector, the developer shall provide, at the discretion of the construction inspector, pipe with a higher strength classification, or a higher class of bedding. During excavation, installation of sewer lines, and placement of trench backfill, excavations shall be kept free of water. The developer shall control surface runoff to prevent entry or collection of water in excavations. The static water level shall be drawn down at least 1 foot below the bottom of the excavation to maintain the undisturbed state of the foundation soils and to maintain the required density of any fill or backfill. The dewatering system shall be installed and operated so that the groundwater level outside the excavation area is not reduced to an extent that would damage or endanger adjacent structures or property. 6-7.3 UNDERGROUND UTILITIES Activities such as trench excavation, tunneling or boring, pipe embankment, backfilling, compaction, safety and pavement patching, whether for public or private utilities, shall conform to the requirements set forth in other sections of the Bothell Standards. 6-7.4 PIPE BEDDING See Standard Details 470 and 471. Pipe bedding shall be at least 6 inches deep beneath the pipe. Bedding shall be installed and spread smoothly so that the pipe is uniformly supported. Subsequent lifts are not to exceed 6 inches in thickness and shall be installed to the crown of the pipe. All lifts shall be individually compacted to 90 percent density as determined by ASTM D-698. An 18 -inch lift shall be placed and compacted over the crown of the pipe, prior to backfilling the trench. The developer may use controlled density fill (CDF) for pipe backfill above the pipe's invert level, with approval of Public Works Director. 6-12 Updated January 2018 2018 Bothell Design and Construction Standards 6-7.5 LAYING SEWER PIPE All sewer main installations shall have the line and grade set by survey, prior to construction. Staking shall show each manhole and cuts to all inverts. All mains are to be laid straight between manholes at a minimum depth of 8 feet, measured at the invert, unless the approved plans show otherwise or unless specifically approved otherwise in writing by the Public Works Director. The developer may use any method, such as swede line and batter board or laser beam etc., to accurately transfer the surveyor -provided control points to the designated alignment and grade. When using the swede line and batter board method, the developer shall transfer line and grade into the trench where they shall be carried by means of a taut grade line supported on firmly set batter boards at intervals of not more than 30 feet. Not less than three batter boards shall be in use at one time. Grades shall be constantly checked and in event the batter boards do not line up, the work shall be immediately stopped and the cause remedied before proceeding with the work. When using a laser beam to set pipe alignment and grade, the developer shall constantly check the position of laser beam from surface hubs provided by the surveyor to ensure the laser beam is still on alignment and grade. In the event the laser beam is found out of position, the developer shall stop work and make the necessary corrections to the laser beam equipment and pipe installed. There shall be a minimum horizontal clearance between sewer and water main pipe of 10 feet, unless another design alternative has been specifically approved by the Public Works Director. Sanitary sewers shall always be installed lower than water mains. Where sanitary sewers and water mains cross, there shall be a minimum vertical separation of 18 inches from the crown of the sanitary line to the invert of the water main, unless an alternative design has been specifically approved by the Public Works Director. Sanitary sewers laid 18 feet and deeper must be cement lined, ductile iron pipe, Class 50. Trenches shall be excavated to the depth and grade required. Pipe bedding shall be placed to provide a uniform and continuous bearing and support for the pipe on solid, undisturbed or compacted ground. Sewer lines shall be laid upgrade from the starting point of connection on the existing sewer, or from a designated starting point, as approved by the City construction inspector. Sewer pipe shall be installed with the bell end forward or upgrade. After placing a length of pipe in the trench, the spigot shall be centered in the bell and the pipe forced home and brought to correct line and grade. During joining, the pipe shall be partially supported to minimize unequal lateral pressure and to maintain concentricity. Pipe handling after the gasket has been affixed shall be carefully controlled to avoid disturbing and dislocating the gasket. Any disturbed or dislocated gaskets shall be removed, cleaned, replaced, and lubricated before joining the sections. 6-13 Updated January 2018 2018 Bothell Design and Construction Standards The maximum length of open trench on streets and roadway shoulders shall not exceed 300 feet at any time, unless specifically approved by the City construction inspector. The developer shall ensure that the project site is a safe environment at all times. At the end of each day, all open trenches must either be backfilled or covered with steel plates and barricaded with attached flashing yellow lights to prevent vehicles, people, and animals from falling into the trench. The developer shall provide a competent person on-site to oversee the construction process during all shoring operations. Where conditions exist which require shoring, the developer shall adequately shore trenches to protect existing property, utilities, pavement, etc. and to provide safe working conditions inside and above the trench. The method of shoring shall be according to the developer's design. The developer may elect to use a combination of shoring and overbreak, tunneling, boring, sliding trench shields, or other methods to accomplish the work, provided the methods meet all applicable local, state, and federal safety codes. Damages resulting from improper cribbing or from failure to crib shall be the sole responsibility of the developer. Compaction tests shall be required for all backfilled trenches in paved public roadways and in roadway shoulders. A minimum of one test location shall be chosen by the City construction inspector for every 200 linear feet of sewer main installed. The City construction inspector has the discretion to require additional tests, and to specify test locations. All testing shall be at the developer's expense. The developer shall remove from the project site, at his/her expense, all excavated trench material deemed by the City construction inspector to be unsuitable for trench backfill. No construction materials, soil, debris, etc. shall be stockpiled in the public right-of-way unless specific permission is granted in writing by the City construction inspector. Under no circumstances shall pipe materials be dropped or dumped into the trench. Broken or otherwise defective pipe shall be removed from the job site and replaced. Every precaution shall be taken to ensure foreign material does not enter the pipe. When pipe laying is not in progress, the open ends of the pipe shall be closed by a watertight plug or other means approved by the City construction inspector. If water is in the trench when work resumes, the seal on the pipe shall remain in place until the trench is completely pumped dry. No pipe shall be laid in water, or when, in the opinion of the City construction inspector, trench conditions are unsuitable. No willows, poplars, cottonwoods, birches, soft maple, gum, or any other tree or shrub whose roots are likely to obstruct public sewers are allowed within 30 feet of any public sewer. Any of these trees found to be located within 30 feet of a proposed sewer main shall be removed at the developer's expense. 6-7.6 PLUGS AND CONNECTIONS All fittings shall be capped or plugged with a plug of an approved material and gasketed with the same gasket material as the pipe unit, or the pipe shall be fitted with an approved 6-14 Updated January 2018 2018 Bothell Design and Construction Standards mechanical stopper, or the pipe shall have an integrally cast knock -out plug. The plug shall be able to withstand all test pressures without leaking. 6-7.7 JOINTING Where it is necessary to break out or connect to an existing sewer during construction, only new pipe having the same inside diameter shall be used in reconnecting the sewer. Where joints must be made between pipes with a mismatched wall thickness, the developer shall use flexible gasketed coupling, adapter, or coupling -adapter to make a watertight joint. Couplings shall be those manufactured by Romac, Smith Blair, or approved equal, for reinforced pipes and Fernco, or approved equal, as approved by the City construction inspector for non- reinforced pipes. 6-7.8 JACKING, AUGURING, OR TUNNELING RESERVED 6-7.9 SIZE The minimum pipe size for sanitary sewer mains shall be 8 inches in diameter. The Public Works Director shall determine the pipe size required to serve the surrounding area. 6-7.10 SLOPE All sewers shall be designed and constructed to give mean velocities of not less than 2.0 feet per second when flowing full. The following minimum slopes shall be provided, however greater slopes are desired. Sewer Size Minimum Slope inches (feet per 100 feet) 6" 1.0% 8 0.40 10 0.28 12 0.22 15 0.15 18 0.12 21 0.10 24 0.08 If the current Criteria for Sewage Work Design manual requires different slopes, those slopes in Criteria for Sewage Work Design shall apply. 6-7.11 PAVEMENT PATCHING For pavement patching see Section 3-10. 6-15 Updated January 2018 2018 Bothell Design and Construction Standards 67.12 CLEANING AND TESTING OF SANITARY SEWERS All sanitary sewer pipe shall be cleaned and tested after backfilling. Testing shall be by either exfiltration or low pressure air method. The developer has the option to select the method of testing, unless the groundwater table is such that the City construction inspector may require the infiltration test. The developer shall clean and flush all sewer lines with clean water and use an approved cleaning ball prior to testing. The cleaning ball shall be an inflatable, diagonally ribbed rubber ball of a size that will inflate to fit snugly into the pipe to be tested. A rope or chord shall be fastened to the ball to enable total control of the ball at all times. All testing shall be under the direction and in the presence of the City construction inspector. The developer shall contact the City construction inspector at least three working days before testing is to occur. Cleaning and testing of sewer lines shall be completed within 15 working days of backfilling, unless otherwise approved in writing by the City construction inspector. The developer shall furnish all labor, materials, tools, and equipment necessary to make clean and test the sewer lines. Any damage resulting from testing shall be repaired by the developer to the satisfaction of the City construction inspector. All wyes, tees, and stubs shall be plugged with flexible jointed caps, or acceptable alternate, securely fastened to withstand the internal test pressure. These plugs or caps shall be readily removable and their removal shall provide a socket suitable for making a flexible, jointed, lateral connection or extension. If the developer elects to test large diameter pipe one joint at a time, leakage allowances shall be converted from GPI I per 100 feet to GPH per joint by dividing by the number of joints occurring in 100 feet. If leakage exceeds the allowable amount, corrective measures shall be taken and the line shall be re -tested to the satisfaction of the City construction inspector. If any sewer installation fails to meet the requirements of the test method used, the developer shall determine the source or sources of leakage and shall replace all defective pipe. The complete pipe installation shall meet the requirements of the test method used before being considered acceptable. Replacement of defective pipe shall not commence until the developer has received approval of his/her plan from the City construction inspector. 6-7.13 EXFILTRATION TEST Prior to exfiltration leakage testing, the developer may fill the pipe with clear water to permit normal absorption into the pipe walls. The developer shall complete the leakage test within 24 hours after filling the pipe. When under test, the allowable leakage shall be limited according to the following provisions. Specified allowances assume pre -wetted pipe. Leakage shall be no more than 0.28 GPH per inch diameter per 100 feet of sewer, with a hydrostatic head of 6 feet above the crown at the upper end of the test section, or above the natural groundwater table at the time of test, whichever is higher. The length of pipe 6-16 Updated January 2018 2018 Bothell Design and Construction Standards tested shall be limited so that the pressure at the lower end of the section tested does not exceed 16 feet of head above the invert; and in no case shall the length of pipe being tested be greater than 700 feet or the distance between manholes, whichever is shorter. Where the test head is other than 6 feet, the maximum leakage shall be 0.28 GPH per inch of diameter per 100 feet of pipe length times the square root of the test head. The leakage can be determined from the equation: Maximum leakage (in gallons per hour) = 0.28x -�H xDx L J6 100 Where: D = diameter (inches) L = length of pipe (feet) H = test head (feet) When the test is to be made one joint at a time, the leakage per joint shall not exceed the computed allowable leakage per length of pipe. 6-7.14 SANITARY SEWER CLOSED CIRCUIT TELEVISION INSPECTION WITH AUDIO ASSESSMENT Before the City will issue final acceptance of the project, the interior of all mainline Sanitary Sewer pipes, and all manhole connection pipes larger than 6 inches in diameter must be inspected by Closed Circuit Television (CCTV) camera and footage provided to the City in DVD format. Personnel performing television inspection must have completed the Pipeline Assessment and Certification Program (PACP) and submit to the Engineer at least 3 working days in advance of the first television inspection. The City does not accept VHS tapes. The CCTV camera must have zoom capability as well as a 360 degree radial view color television camera (also known as a pan and tilt) with a mechanical footage counter calibrated to indicate video footage consistent with distance traveled in the pipe. Footage must be zeroed at the centerline of the manhole where the video starts and footage increases as it travels forward, and decreases when backward camera movement is required. Display footage must be shown on the video. The camera must have a light source providing adequate illumination to clearly identify pipe invert, crown, joints, sides, connections, and infiltration/exfiltration. Provide adequate illumination to record images at least 15 feet in front of the camera. Audio commentary must be objective and based on PACP defined assessment conditions. Audio must be intelligible and as free from interference and background noise as can reasonably be done. Do not use subjective comments such as: the fault of, caused by, and opinion. Comments must include the footage counter reading, each connection, the starting and ending structure, indicated flaws, areas of infiltration/exfiltration, open joints, outfall, and other features as may be necessary. 6-17 Updated January 2018 2018 Bothell Design and Construction Standards Submit television inspections on DVD -R discs. All inspections must be in a PACP format, with uploadable capability to the City Of Bothell GraniteNet database. Contact City Of Bothell for specific database requirements. Each individual sanitary sewer main inspection, from manhole to manhole, must be recorded on one digital file. The City will accept multiple digital files for a single pipe only when the pipe reach cannot be recorded to one digital file due to extreme pipe length or obstructions in the pipe. The City will not accept multiple sewer main inspections recorded on a single digital file. The City will not accept dirty, blurry, foggy, submerged, or otherwise non -viewable inspections. Prior to inspection, the Contractor must have completed the manhole channeling, grouting, trench backfill, compaction, and final restoration of the street or easement. The City must have accepted the invert elevations and record drawings. All sewer mains and laterals must be cleaned. All lines not clean must be re -flushed, cleaned, and re -inspected. At least two days prior to the inspection, the Contractor must contact the City to inform the Inspector when and which lines will be inspected. Immediately preceding the CCTV inspection, water with dye must be poured into the system and must be visible on the DVD recording. At the beginning of each sewer main inspection, the information listed below must be electronically generated and displayed on the CCTV footage. This data must be continuously updated, and displayed on the CCTV footage, during the inspection. 1. Date of inspection 2. Contractor Company Name 3. Operator Name 4. Upstream Manhole number to downstream manhole number 5. Direction of inspection (upstream or downstream) 6. Pipe material and size A 1 -inch ball must be placed immediately in front of the camera, mounted such that the ball contacts the pipe bottom at all times. CCTV inspection cannot be paused once it begins. Only continuous inspections are acceptable. Pipe joints, manholes, and connections into manholes must be thoroughly inspected by panning the entire connection, including manhole risers. Zooming inspection of all lateral connections is required. The Contractor must bear all costs incurred in correcting any deficiencies found during the CCTV inspection, including the cost of any additional CCTV inspections that may be required by the City to verify that deficiencies have been corrected. 6-18 Updated January 2018 2018 Bothell Design and Construction Standards 6-8 ACCEPTANCE OF SANITARY SEWER SYSTEMS The following steps shall be completed before the City will accept the improvements and release the performance bond. 1. All easements must be reviewed, approved, and recorded, as per Section 1-9.3. 2. The sewer system shall have been tested, inspected, approved, and accepted by the City construction inspector. 3. The City construction inspector shall have received, reviewed, and approved the as-builts as per Section 1-14. 4. The City must receive a satisfactory maintenance bond per Section 1-5.2. G-19 Updated January 2018 2018 Bothell Design and Construction Standards 6-9 SANITARY SIDE SEWERS Side sewers shall be connected to the sewer main only, not into the manholes, unless otherwise approved by the Public Works Director. 6-9.1 DESCRIPTION The sanitary side sewer is that portion of a sewer line constructed between a public sewer line and the building from which the waste originates. 6-9.2 MATERIALS Materials shall meet the requirements of Section 6-7.1. All pipe shall be clearly marked with type, class, and thickness, as applicable. Lettering shall be legible and permanent under normal conditions of handling and storage. Jointing shall be with approved, flexible gasketing. Flexible gasketing shall include rubber, synthetic rubber -like, and plastic materials specially manufactured for the joint, pipe size, and use intended, and shall be furnished by the manufacturer of the pipe to be used. 6-9.3 GENERAL Side sewer construction shall conform to Standard Details 601, 602 and 607. The applicant shall obtain a side sewer permit and all other required permits before connection to the sanitary sewer main shall be allowed. Side sewer locations shown on the drawings shall be subject to relocation in the field. Regardless of the location shown on the drawing, the developer shall place the tee branch in the sewer main at the location designated by the City construction inspector. Four or more buildings shall not be connected to a side sewer unless approved by the Public Works Director. Side sewers shall not cross a public right-of-way or run parallel to the right-of-way centerline. 6-9.4 SIDE SEWER CONSTRUCTION Excavation, bedding, backfill, and compaction for side sewers shall conform to the requirements of the Bothell Standards, and to Standard Details 470 and 471. Side sewers shall have a minimum cover of 5 feet in the public right-of-way and 2 feet inside the property line, unless otherwise approved by the Public Works Director. 6-20 Updated January 2018 2018 Bothell Design and Construction Standards 6-9.5 SIZING SIDE SEWERS That portion of a side sewer located within the public right-of-way shall have a minimum diameter of 6 inches. That portion of a side sewer located on private property shall have a minimum diameter of 4 inches for single family residences, and 6 inches for all other uses, except for high - consumption uses, which are determined by the Public Works Director on a case-by-case basis. 6-9.6 SLOPE OF SIDE SEWERS Side sewers shall have a minimum slope of 2 percent, unless otherwise approved by the Public Works Director. A flapper, swing valve, or other approved device shall be installed when, in the opinion of the Public Works Director, there exists a reasonable possibility of sanitary sewer backup from the sewer main into the residence or business. 6-9.7 FITTINGS AND CLEANOUTS FOR SIDE SEWERS All fittings shall be factory produced and shall be designed for installation on the pipe to be used. Fittings shall be of the same quality and material as the pipe used, except when installing a PVC insert on existing pipe. Side sewers shall be connected to the tee, wye, or riser provided in the sewer main, where such is available, utilizing approved fittings or adapters. Where no tee, wye, or riser is provided or available, connection shall be made by core drilling and installing an approved tee. Tees shall be Romac Industries, Style CG or approved equal. All side sewers shall have a 6 -inch cleanout at the property line as shown on Standard Detail 602. The riser portion of the cleanout shall be PVC, unless otherwise approved by the City construction inspector. Cleanouts shall be spaced no more than 100 feet apart. 6-9.8 TRACER TAPE Tracer tape shall be installed over non-metallic sewer mains and side sewer pipes and stubs. The tracer tape shall be placed approximately 1 foot above the top of the pipe along its entire length. Tracer tape shall be 6 inches wide Lineguard Type II Detectable, or approved equal, and shall be marked, "sewer." 6-9.9 TESTING OF SIDE SEWERS All side sewers shall be tested after backfill. Side sewers that are reconstructed or repaired to a length of 10 feet or more shall be tested for watertightness. Testing will not be required for newly reconstructed sections of side sewers consisting of a single length of pipe. Testing shall be performed in the presence of the City construction inspector in accordance with Section 6-7.12. 6-21 Updated January 2018 2018 Bothell Design and Construction Standards When a new side sewer is installed, the entire length of new pipe shall be tested. In cases where a new tap is made on the main, the first joint of pipe off the main shall be installed with a test tee, so that an inflatable rubber ball can be inserted for sealing off the side sewer installation for testing. In cases where the side sewer stub is existing to the property line, the test ball may be inserted through the cleanout wye to test the new portion of the side sewer installation. 6-9.10 SIDE SEWER AS-BUILTS The developer shall submit a side sewer as -built drawing to the construction inspector at the time of the side sewer inspection. The side sewer as -built drawing shall show the following: 1. Property boundaries, with dimensions, north arrow, and abutting streets. 2. Location and size of existing buildings. 3. Location of the side sewer, its connection with the building, and the pipe material and diameter. 4. The depth and point of connection of the side sewer to the sanitary sewer main. 5. Any additional information the construction inspector deems pertinent. 6-22 Updated January 2018 2018 Bothell Design and Construction Standards 6-10 SEPTIC TANKS Septic systems are generally not allowed within the City. If the Public Works Director determines that public sanitary sewer service is not available or that it is not practical , a septic tank system may be installed upon approval by the Public Works Director and issuance of a septic permit by the Snohomish Health District or King County Public Health, depending on the property location. 6-23 Updated January 2018 2018 Bothell Design and Construction Standards 6-11 LIFT (PUMP) STATIONS All side sewers must gravity flow into the City's sanitary sewer system. Bothell does not promote construction of individual side sewer pumps or public lift stations. The City will only consider these methods if a gravity system cannot be constructed. Private pressure side sewer lines are not permitted within the public right-of-way. If a gravity system cannot reasonably be constructed and a non -gravity system has been approved by the Public Works Director, the private pressure lines must enter a manhole on private property and gravity flow into the public system with a standard side sewer connection. The minimum manhole size permitted for this application is 30 inches in diameter. The manhole shall be installed with a locking lid frame and cover as per Standard Detail 621. Construction plans for lift stations must be reviewed and approved by the Public Works Director. The following items shall be considered for each application: 1. Lift stations are to use submersible pumps. 2. Public lift stations must be set up with auxiliary power, including an automatic transfer switch. 3. Provisions for telemetry and/or alarms shall be required. 6 -24 Updated January 2018 2018 Bothell Design and Construction Standards 6-12 GREASE TRAPS AND INTERCEPTORS Grease traps and interceptors shall be installed and sized according to the criteria in the Uniform Plumbing Code (UPC). Grease traps and interceptors shall be located on private property, and shall remain privately owned and maintained at the owner's or occupant's expense. 'These facilities shall be available for inspection by the Public Works department with a 24 hour verbal notification to the occupant or property owners. Grease interceptors shall be designed using standard engineering principles for sedimentation and flotation in gravity separators. The grease interceptor will have a minimum of two compartments with fittings designed for grease retention. The grease interceptor shall be installed so that it is easily accessible for sample collection, inspection, and cleaning and removal of retained grease. The grease interceptor shall not be installed in any part of the building and the location shall meet the approval of the City. Grease interceptors shall be located in the food service establishment's lateral line between all fixtures that may introduce grease into the sanitary sewer and the connection to the sanitary sewer collection system. Such fixtures shall include, but not be limited to, sinks, dishwashers, floor drains in food preparation and storage areas, mop sinks, and any other fixture that is determined to be a potential source of grease. Grease interceptors must be vented. (Check venting requirements with Plumbing). Flushing the grease interceptor or grease trap with water hotter than 140 degrees Fahrenheit is prohibited (UPC 1014.1B). Grease traps shall be equipped with a device to control the rate of flow through the unit. The rate of flow in gallons per minute shall not exceed the manufacturer's recommendation for the unit. 6-25 Updated January 2018 APPENDIX D SEWER OVERFLOW RESPONSE PLAN CITY OF BOTHELL Sewer Overflow Response Plan (SORP) City of Bothell TM TABLE OF CONTENTS SECTION PAGE NO. I. Authority............................................................................................................. l Il. General................................................................................................................1 A. Objectives................................................................................................ l B. Organization of Plan.................................................................................1 III. Overflow Response Procedure.............................................................................2 A. Receipt of Information Regarding an SSO................................................2 B. Dispatch of Sewer Maintenance Personnel to Site of Sewer Overflow ...... 3 C. Overflow Correction, Containment, and Cleanup.....................................5 D. Sewage Overflow Report..........................................................................8 E. Customer Satisfaction...............................................................................9 IV. Public Advisory Procedure...................................................................................9 A. Temporary Signage..................................................................................9 B. Other Public Notification........................................................................10 V. Regulatory Agency Notification Plan.................................................................10 A. Immediate Notification........................................................................... 10 B. Secondary Notification........................................................................... l I VI. Maintenance of SORP........................................................................................ I I VII. Appendices........................................................................................................ I 1 City of Bothell — Sewer Oveiflow Response Plan i I. AUTHORITY This Sewer Overflow Response Plan (SORP) is prepared pursuant to SPDES, to facilitate proper incident reporting procedures outlined in Operating in Accordance with a SPDES Permit, specifically incident Reporting. II. GENERAL The Sewer Overflow Response Plan (SORP) is designed to ensure that every report of a sewage overflow incident is immediately dispatched to the appropriate the City of Bothell Sewer Department personnel for confirmation. Quick response will minimize the effects of the overflow with respect to impacts on public health, beneficial uses and water quality of surface waters and on customer service. The SORP further includes provisions to ensure safety pursuant to the directions provided by the Department of Ecology (DOE) and that notification and reporting is made to the DOE and Washington State Department of Health (WADOH) when applicable. For purposes of this SORP, "confirmed sewage spill" is also sometimes referred to as "sewer overflow," "overflow," or "SSO." A. Objectives The primary objective of the SORP is to protect public health and the environment, satisfy regulatory agencies and waste discharge permit conditions which address procedures for managing sewer overflows, and minimize risk of enforcement actions against the City of Bothell, sewer system owner. Additional objectives of the SORP are as follows: Protect collection system personnel; Protect the collection system, wastewater treatment facilities, and all appurtenances; and Protect private and public property beyond the collection and treatment facilities. B. Organization of Plan The key elements of the SORP are addressed individually as follows: Section III — Overflow Response Procedure Section IV — Public Advisory Procedure Section V — Regulatory Agency Notification Procedure Section VI — Maintenance of SORP Section VII — Appendices City of Bothell — Sewer Overflow Response Plan I III. OVERFLOW RESPONSE PROCEDURE The Overflow Response Procedure presents a strategy for the City of Bothell Sewer Department to mobilize labor, materials, tools and equipment to correct or repair any condition, which may cause or contribute to an unpermitted discharge. The plan considers a wide range of potential system failures that could create an overflow to surface waters, land or buildings. A. Receipt of Information Regarding an SSO An overflow may be detected by City employees or by others. The City of Bothell employees is responsible to act based on received phone calls or reports on possible sewage overflow from the wastewater disposal system, and to provide immediate response to investigate and/or correct reported sewer overflow. Generally, telephone calls from the public reporting possible sewer overflows are received at the public offices identified in Appendix D. 1. The telephone operator obtains all relevant information available regarding the overflow including: a. Time and date call was received; b. Specific location; C. Description of problem; d. Time possible overflow was noticed by the caller; e. Caller's name and phone number; f. Observations of the caller; and g. Other relevant information that will enable the City of Bothell Water and Sewer Department, to quickly locate, assess and stop the overflow. The telephone operator records initial information in the Sewage Overflow Report (Ref. Appendix A) and notifies the City of Bothell Sewer Department. 2. The City of Bothell Sewer Department dispatches sewer maintenance personnel to confirm the overflow. Until verified, the report of a possible spill will not be referred to as a "sewer overflow." The City of Bothell Sewer Department completes the Sewage Overflow Report (Ref. Appendix A) within 24 hours of the sewer overflow confirmation and provides the information orally to the DOE. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the City shall notify the DOE contact person and the DOH contact person orally, within two hours of becoming aware of the discharge. City of Bothell — Sewer Overflow Response Plan 2 If the overflow results in a fish kill, notify the DOE contact person within two hours of becoming aware of the discharge. The City of Bothell Sewer Department Supervisor is responsible for reviewing, updating and signing the final Sewage Overflow Report. Sewage overflow response tracking protocol is summarized in Appendix C. B. Dispatch of Sewer Maintenance Personnel to Site of Sewer Overflow Failure of any element within the wastewater disposal system that threatens to cause or causes a SSO must trigger an immediate response to isolate and correct the problem. Personnel and equipment must be available to respond to any SSO locations. Additional maintenance personnel shall be "on call" in the event extra manpower is needed. Summary of Sewer Overflow Action Plan is included in Appendix C. 1. Dispatching Maintenance Personnel When the City of Bothell receives notification of a potential sewer overflow outlined in Section A, the City of Bothell Sewer Department dispatches maintenance personnel with appropriate resources as required. 2. Maintenance Personnel Instructions Dispatch maintenance personnel by telephone or radio. Assign and appropriate personnel, materials, supplies and equipment needed. The telephone operator must verify that the entire message has been received and acknowledged by the maintenance personnel who were dispatched. All personnel being dispatched to the site of an SSO proceed immediately to the site of the overflow. Report any delays or conflicts in assignments immediately for resolution. In all cases response maintenance personnel report their findings, including possible damage to private and public property, to the City of Bothell Sewer Department Supervisor immediately upon making their investigation. If the City of Bothell Sewer Department Supervisor has not received findings from the field crew within 1 hour the City of Bothell Sewer Department Supervisor contacts the response maintenance personnel to determine the status of the investigation. City of Bothell — Sewer Overflow Response Plan 3 3. Additional Resources The City of Bothell Sewer Department Supervisor receives and conveys to appropriate parties requests for additional personnel, material, supplies, and equipment for maintenance personnel working at the site of a sewer overflow. 4. Preliminary Assessment of Damage to Private and Public Property The City of Bothell maintenance personnel shall use discretion in their actions as reasonably as they can. They must be aware that the customer could face increased liability for any further damages inflicted to private property during such assistance. The City of Bothell maintenance personnel shall not enter private property for purposes of assessing damage unless authorized by the City of Bothell Sewer Department Supervisor. The City of Bothell maintenance personnel shall take appropriate still photographs and/or video footage; if possible, of the sewer overflow impacted area in order to thoroughly document the nature and extent of impacts. Retain photographs for filing with the Overflow Report. 5. Field Supervision and Inspection The City of Bothell Sewer Department Supervisor visits the site of the sewer overflow to ensure that provisions of this Overflow Response Plan and other directives are met. The City of Bothell Sewer Department Supervisor is responsible for verbally notifying DOE and WADOH within the specified time and submitting the Overflow Report to DOE. 6. Coordination with Hazardous Material Response Upon arrival at the scene of a sewer overflow, should a suspicious substance (e.g., oil sheen, foamy residue) be found on the ground surface, or should a suspicious odor (e.g., gasoline) not common to the sewer system be detected, the City of Bothell sewer maintenance crew shall immediately contact the City of Bothell Sewer Department Supervisor for guidance before taking further action. Should the City of Bothell Sewer Department Supervisor determine the need to alert the hazardous material response team, the maintenance personnel awaits the contracted hazardous waste team response. City of Bothell — Sewer Overflow Response Plan 4 Contact the DOE 24-hour Spill Hotline at 1-425-649-7000. Upon arrival of the hazardous material response team, the City of Bothell Sewer maintenance personnel take direction from the person with the lead authority of that team. Only when that authority determines it is safe and appropriate for the City of Bothell sewer maintenance personnel to proceed under the SORP with the containment, clean-up activities and correction. C. Overflow Correction, Containment, and Cleanup This section describes specific actions to be performed by the City of Bothell sewer maintenance personnel during a SSO. The objectives of these actions are: • To protect public health, environment and property from sewage overflows and restore surrounding area back to normal as soon as possible; • To establish perimeters and control zones with appropriate traffic cones and barricades, vehicles or use of natural topography (e.g., hills, berms); • To promptly notify the regulatory agency with preliminary overflow information and potential impacts; • To contain the sewer overflow to the maximum extent possible including preventing the discharge of sewage into surface waters; and • To minimize the customer's exposure to any regulatory agency penalties and fines. Under most circumstances, the City of Bothell can handle all response actions with its own maintenance forces. They have the skills and experience to respond rapidly and in the most appropriate manner. An important issue with respect to an emergency response is to ensure that the temporary actions necessary to divert flows and repair the problem do not produce a problem elsewhere in the system. Circumstances may arise when the City of Bothell could benefit from the support of private -sector construction assistance. This may be true in the case of large diameter pipes buried to depths requiring sheet piling and dewatering should excavation be required. The City of Bothell may also choose to use private contractors for open excavation operations that might exceed one day to complete. City of Bothell — Sewer Overflow Response Plan 5 Responsibilities of the City of Bothell sewer maintenance personnel upon arrival: It is the responsibility of the first personnel who arrive at the site of a sewer overflow to protect the health and safety of the public by mitigating the impact of the overflow to the maximum extent possible. Should the overflow not be the responsibility of the City of Bothell but there is imminent danger to public health, public or private property or to the quality of waters of the state, then the City of Bothell Sewer Department Supervisor takes prudent emergency action until the responsible party assumes responsibility and provides actions. Upon arrival at a SSO, the City of Bothell sewer maintenance personnel perform the following: • Determines the cause of the overflow, e.g. sewer line blockage, pump station mechanical or electrical failure, sewer line break, etc. • Identifies and requests assistance or additional resources to correct the overflow or to assist in determination of its cause; • Takes immediate steps to stop the overflow, e.g. relieves pipeline blockage, manually operates pump station controls, repairs pipe, etc. Extraordinary steps may be considered where overflows from private property threaten public health and safety (e.g., an overflow running off of private property into the public right-of-way); and • Requests additional personnel, materials, supplies, or equipment that will expedite and minimize the impact of the overflow. 2. Initial Measures for Containment • Initiate measures to contain the overflowing sewage and recover where possible sewage, which has already been discharged, minimizing impact to public health or the environment. • Determine the immediate destination of the overflow, e.g., storm drain, street curb gutter, body of water, stream bed, etc. • Identify and request the necessary materials and equipment to contain or isolate the overflow, if not readily available; and • Take immediate steps to contain the overflow, e.g., block or bag storm drains, recover through vacuum truck, divert into downstream manhole, etc. City of Bothell — Sewer Overflow Response Plan 6 3. Additional Measures under Potentially Prolonged Overflow Conditions In the event of a prolonged sewer line blockage or a sewer line collapse, set up a portable by-pass pumping operation around the obstruction. Take appropriate measures to determine the proper size and number of pumps required to effectively handle the sewage flow. Implement continuous or periodic monitoring of the bypass pumping operation as required. Address regulatory agency issues in conjunction with emergency repairs. 4. Cleanup Clean sewer overflow sites thoroughly after an overflow. No readily identified residue (e.g., sewage solids, papers, rags, plastics, and rubber products) is to remain. • Whenever possible digital photos should be taken of the area before and after cleanup. • Where practical, thoroughly flush the area and clean of any sewage or wash -down water. Solids and debris are to be flushed, swept, raked, picked -up, and transported for proper disposal. • Secure the overflow area to prevent contact by members of the public until the site has been thoroughly cleaned. • Where appropriate, disinfect and deodorize the overflow site. • Where sewage has resulted in ponding, pump the pond dry and dispose of the residue in accordance with applicable regulations and policies. • If a ponded area contains sewage, which cannot be pumped dry, it may be treated with bleach. If sewage has discharged into a body of water that may contain fish or other aquatic life, do not use bleach. Contact the DOE for specific instructions. City of Bothell — Sewer Overflow Response Plan 7 D. Sewage Overflow Report The Sewer Overflow Report in Appendix A contains information which is required to be reported to DOE and possibly to WADOH depending upon the nature of the spill. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the City of Bothell shall notify the DOE contact person and the WADOH contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the DOE contact person within two hours of becoming aware of the discharge. The City of Bothell Sewer Department Supervisor completes a Sewer Overflow Report (Ref. Appendix A). The City of Bothell Sewer Department Supervisor promptly notifies the City of Bothell Office and DOE when the overflow is eliminated. Information regarding the sewer overflow includes the following: Determination if the sewage overflow had reached surface waters, i.e., all overflows where sewage was observed running to surface waters, or there was obvious indication (e.g., sewage residue) that sewage flowed to surface waters; and Determination that the sewage overflow had not reached surface waters by describing conditions at the sewage overflow, which support this determination. Determination of the start time of the sewer overflow by one of the following methods: a. Date and time information received and/or reported to have begun and later substantiated by the City of Bothell sewer maintenance personnel; b. Visual observation. Determination of the stop time of the sewer overflow by one of the following methods: a. When the blockage is cleared or flow is controlled or contained; or b. The arrival time of the City of Bothell sewer maintenance personnel, if the overflow stopped between the time it was reported and the time of arrival. City of Bothell — Sewer Overflow Response Plan 8 Visual observations An estimation of the rate of sewer overflow in gallons per minute (gpm) by one of the following criteria: a. Direct observations of the overflow; or b. Measurement of actual overflow rate from the sewer main. Determination of the volume of the sewer overflow. Photographs of the event, when possible. Assessment of any damage to the exterior areas of public/private property. The City of Bothell sewer maintenance personnel shall not enter private property for purposes of estimating damage to structures, floor and wall coverings, and other personal property without authorization from the City of Bothell Sewer Department Supervisor. E. Customer Satisfaction The City of Bothell Sewer Department Supervisor follows up in person or by telephone with the entity who was reporting the overflow. The cause of the overflow and its resolution will be disclosed. IV. PUBLIC ADVISORY PROCEDURE This section describes the actions the City of Bothell will take, in cooperation with the DOE and/or WADOH, to limit public access to areas potentially impacted by unpermitted discharges of pollutants to surface water bodies from the wastewater collection system. A. Temporary Signage The City of Bothell has primary responsibility for determining when to post notices of polluted surface water bodies or ground surfaces that result from uncontrolled wastewater discharges from its facilities. The postings do not necessarily prohibit use of recreational areas, unless posted otherwise, but provide a warning of potential public health risks due to sewage contamination. The City of Bothell Sewer Department Supervisor and City elected official determine if posting of a confirmed overflow is necessary. City of Bothell — Sewer Overflow Response Plan 9 B. Other Public Notification Should the posting of surface water bodies or ground surfaces subjected to a sewer overflow be deemed necessary by the City of Bothell Sewer Department, the City of Bothell Sewer Department Supervisor will determine the need for further public notification. V. REGULATORY AGENCY NOTIFICATION PLAN The Regulatory Agency Notification Plan establishes procedures, which the City of Bothell follows to provide formal notice to the WADOH as necessary in the event of a SSO. Agency notifications will be performed in parallel with other internal notifications. Internal notification and mobilization of the City of Bothell sewer maintenance personnel are established in Section III — Overflow Response Procedure. Using data supplied during the verification process and updates from the maintenance personnel, the City of Bothell Sewer Department Supervisor prepares initial and final Overflow Reports. Initial report will be provided orally to the DOE and if necessary the local health department within either 2 hours or 24 hours from the time the City became aware of the SSO. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the City shall notify the DOE contact person and the WADOH contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the DOE contact person within two hours of becoming aware of the discharge. Prepare and provide final report to the regulatory agency within 5 days after the City of Bothell becomes aware of the overflow. Submit by mail. The City of Bothell Sewer Department Supervisor is responsible for meeting the notification requirement. The City of Bothell Sewer Department Supervisor prepares written notification to the appropriate regulatory agency of any confirmed overflows. The City of Bothell Water and Sewer Department Supervisor signs these notifications. The DOE contact person may waive the written report requirement on a case-by-case basis if the oral report was received within the required time frame. Regardless of other notifications, a Report of Noncompliance form is required to be submitted with the monthly Discharge Monitoring Report. A. Immediate Notification If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the City of Bothell shall notify the DOE contact person and the WADOH contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the DOE contact person within two hours of becoming aware of the discharge. Fax the initial and any updated Sewer Overflow Report to: City of Bothell — Sewer Overflow Response Plan 10 DOE, Your Regional Water Manager or inspector and Address, Attn: Your Regional Water Manager or inspector Address Telephone: Fax: B. Secondary Notification The City of Bothell Sewer Department Supervisor may contact other agencies, as necessary, as well as other interested and possibly impacted parties. VI. MAINTENANCE OF SORP The SORP will be reviewed on an annual basis. Possible amendments can include: Change in procedures Change in contact personnel Changes due to regulatory requirements VII. APPENDICES Appendix A — Sanitary Sewer Overflow Report Form Appendix B — Sewer Overflow Notice Plan Flow Chart Appendix C — Sewer Overflow Response Tracking Protocol Appendix D — List of Public Offices to Report Overflow Appendix E — Suggested Criteria for Demonstrating How a Sewer Overflow was Unavoidable Appendix F — Measures to Avoid Sewer Overflow Appendix G — Overflow Descriptions and Required Notifications City of Bothell — Sewer Overflow Response Plan 11 APPENDIX A SANITARY SEWER OVERFLOW REPORT FORM 1. General Information a. SPDES # : b. Name of collection system: C. Authorized representative filing this form: Name: Title: e-mail Address: d. Type of filing report: ,0' Initial ,ol' Final e. Date of filing report: Initial ,0' Final 2. Oral Reporting of Overflow, Bypass or Upset All releases of untreated or partially treated sewage require 24-hour oral notification except those that require 2 -hour oral notification. a. Overflow requiring 2 -hour notification. ,o�' Impact or closure of bathing area ,0' Impact or closure of public drinking water intake ,00' Results in fish kills Other: City of Bothell — Sewer Overflow Response Plan 12 0 b. Overflow requiring 24-hour notification. Gravity sewer manhole Pump station .0"' Treatment plant bypass Other C. Oral report to DOE contact person. Name: Phone Number: e-mail Address: DOE Office: Date of phone notification: d. Oral report to local Health Department contact person. Name: Phone Number: e-mail Address: Health Department Office: Date of phone notification: Overflow Location and Description a. Location City/Town: Address or Landmark: b. Discharge Location: Directly to receiving ground water .o"' Ground Receiving water via storm drain ,,,* Building City of Bothell — Sewer Overflow Response Plan 13 4. 5. C. Type of overflow ,0' Gravity sewer manhole or' Pump station Bypass at treatment plan Other Time of Overflow/Bypass Incident - When did the incident begin? Date: - Was the overflow/bypass event ongoing at the time of report: # Yes # No If yes, how long is the incident expected to continue? If no, when did event end? Date: / / Time: General Information about Overflow at this Location a. Estimated volume of overflow released at time of report: b. Method of estimating volume: C. Estimated total volume of overflow released at end of incident: d. Were digital photos taken: # Yes # No e. Corrective measures taken: O No action Removed blockage Repair pump station ,01' Other: f. Cause of overflow/bypass (select all those that apply): .o* Rain Snow melt ,o' High ground water ,�O' Other excessive flow City of Bothell — Sewer Overflow Response Plan 14 Sewer system blockage or collapse ,09 Pump /lift station failure ,oO' Other: g. Additional comment: FIVE DAY WRITTEN INCIDENT REPORT Complete the first five sections of this notification form and use the space below to include any additional information regarding the overflow. Include any steps taken or planned to prevent a recurrence. Submit this form to the regional DOE office within five days of becoming aware of the incident. City of Bothell — Sewer Overflow Response Plan 15 APPENDIX B SEWER OVERFLOW NOTICE PLAN FLOW CHART WASTEWATER DISPOSAL SYSTEM POSSIBLE SEWER OVERFLOW REPORTED CITY OF BOTHELL WASTEWATER AND SEWER DEPARTMENTS NOTIFIED, MAINTENANCE PERSONNEL MOBILIZED SEWER OVERFLOW CONFIRMED NO SEWER OVERFLOW CONFIRMED FILE REPORT, NOTIFY CALLER MAKING REPORT PERFORM EVALUATION, DETERMINE CAUSE AND CORRECTIVE ACTION COMPLETE INITIAL REPORT NOTIFY DOE/WADOH 2 Hour Criteria 24 Hour Criteria (See Appendix G) CORRECT CAUSE OF OVERFLOW CLEAN IMPACTED AREA COMPLETE FINAL REPORT SEND REPORT TO DOE Within 5 Days NOTIFY PERSONS IMPACTED BY THE OVERFLOW City of Bothell—Seiver Overflow Response Plan 16 APPENDIX C SEWER OVERFLOW (SSO) RESPONSE TRACKING PROTOCOL WASTEWATER DISPOSAL SYSTEM STEP EVENT 1. Report of possible SSO received by a telephone operator. 2. Telephone Operator enters received information into Sewer Overflow Report. Telephone Operator contacts the City Sewer Department, which then deploys maintenance personnel to confirm, reported SSO. 4. Maintenance personnel reports back to the City of Bothell Sewer Department Supervisor reporting significance of the overflow. 5. The City of Bothell Sewer Department Supervisor completes initial Overflow Report. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the City shall notify the DOE contact person and the WADOH contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the DOE contact person within 2 hours of becoming aware of the discharge. 6. Within 5 days the City of Bothell Sewer Department Supervisor prepares final Overflow Report. Report is mailed to DOE. 7. Data from Overflow Report are entered into a permanent record on file at the City of Bothell Water and Sewer Department. 8. Attach Report of Noncompliance to Discharge Monitoring Report. City of Bothell — Sewer Overflow Response Plan 17 APPENDIX D LIST OF PUBLIC OFFICES TO REPORT SSO WASTEWATER DISPOSAL SYSTEM Contact Telephone Main Office.............................................................425.488.2768 City of Bothell Public Works Superintendent ..........425.488.0118 x 6852 City of Bothell Sewer Supervisor ............................ 425.488.0118 x 6855 Fire Department - Station#42.................................. 425.486.1678 Bothell Police..........................................................425.486.1254 Department of Ecology Spill Response .................... 425.649.7000 Washington State Department of Health .................. 877.481.4901 City of Bothell — Sewer Overflow Response Plan 18 APPENDIX E SUGGESTED CRITERIA FOR DEMONSTRATING HOW A SEWER OVERFLOW WAS UNAVOIDABLE SSO's can be demonstrated as unavoidable by showing the discharge meets each of the criteria 1 through 5. 1. The discharge resulted from a temporary, exceptional incident that was either: A. Necessary to prevent loss of life, personal injury, or severe property damage. B. Beyond the reasonable control of the operator. Incidents beyond the reasonable control of the operator would include: • Exceptional acts of nature; • Third party actions that could not be reasonably prevented, including vandalism that could not be avoided by reasonable measures; • Blockages that could not be avoided by reasonable measures; • Unforeseeable sudden structural, mechanical, or electrical failure that could not be avoided by reasonable measures. 2. The discharge had no feasible alternative. 3. The discharge was not caused by any of the following: A. Operational error; B. Improperly designed or constructed collection system facilities; C. Inadequate collection system facilities or components; D. The lack of appropriate preventive maintenance; or E. Careless or improper oversight. 4. Steps to stop the discharge, address the source of the problem, and mitigate potential impacts from the discharge were taken as soon as possible after becoming aware of the release. City of Bothell — Sewer Overflow Response Plan 19 APPENDIX F MEASURES TO AVOID SEWER OVERFLOW A. Proper Collection System Maintenance and Operations Program • Cleaning of pipes (grease, roots deposits). • Sealing or maintenance for deteriorating sewers. • Remediation of poor/substandard construction (short term). • Sewer replacement or rehabilitation program (long term). • Proper maintenance and operations of pump stations. • Inspection of private laterals. B. New Wastewater Disposal System Construction • Use latest technology and standards in constructing new wastewater disposal system improvements. • Perform proper construction inspection/quality assurance procedures. City of Bothell — Sewer Overflow Response Plan 20 APPENDIX G OVERFLOW DESCRIPTIONS AND REQUIRED NOTIFICATION Overflows requiring 2 -Hour Verbal Notification Impact or closure of bathing area during bathing season (DOE & WADOH) - Impact of closure of public drinking water intake (DOE & WADOH) Results in a fish kill (DOE) Overflows Requiring 24 -Hour Notification (DOE only) Gravity sewer manhole - Pump station Sewer siphon - Treatment plant bypass Department of Ecology Regional Water Manager Address Street Phone: 360.407.6300 Fax: Email After Hours: City of Bothell — Sewer Overflow Response Plan 21 APPENDIX E MODELING DATA AND RESULTS a o E m m m to m o0 00 0o et o v n o m m n a m O N rn 'i � .1 o n m oo ui n a m m 'i 00 a a 1\ m r4 n n n N N w M M m m N W M O N V N cq M O C N N )-1 1� N V m R W V a m hA .mi •--i V N M V1 111 0o w m m O N O N m 0 OC N a-1 m 1, O LD m Lo N ri Ln m lD m M co r1 V m m- h $ V V V N O W N h m W _1 N C, 1- OC O O n- 0o h m rl H M O lfl Ct m O Nm tD M of m M N W N- a-1 rl 1- m ti Vl IliW Oo 1- � V n tD '-I m ll) r-1 N Oo N N N N a-1 N r, o1 W M U .-1 t\ a to c -I V W O .-i N Dl O m m Dt Ifl ry ry M N Ill M Vl m N �T m In N N N - m N 00 V rl tD LD 1, OO N .-1 .� rl ci a-1 � N In a-1 N a -i rl N N lD eti N E LD cT �T of m N m N Q1 O o1 tO 1l1 N 00 N .-1 w m oo N w N w 0o T W V' O N to O m M to N 1l co V L7. 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- m M m m M m m M m m m M m M M M M M M M m m m m M m m M M M m m d oo DO DO W SO oo oo oO Do oo oo W oo m DO DO oo Do W OO oo oo oc oo oo oo oo oo oo DO D0 W F) $ E rp N r� n f� N lD r� t\ W � Ol t\ N N M N �' N M m Q0 m M r, m m m N 'ct m m m 01 X w LD LD lD Ln c -I LD LD O N o m N N m O 00 I' N M M 'z4 -M ri lD N N rl LD N m m Ln cD L0 p lD Un p lD LD p p Ln 1p lD Ln m W LD 00 n lD m M v M O n r� Ln Ct Ln V1 Ln +, o o 0 o o O o o o O o o 0 c ..0 U i -I o 0 0 0 0 Ln Y_ U 0 O O O c1 n O O M O M M lD lD r- m m 00 m N ri lD LD to M m 00 n M N V X v cr6 G LD ri N c-1 N M r -i r -I LD Ol M n r -I N LD N M m O O O Ln 00 00 CO LD c O O O O O O o 0 0 0 0 N 0 It N N N N rV N d' O ri O o 0 rT O O O O O O O O O O O O O O O O O O O O O O O O O O O X r0 O c -I M m m m m Ln m LD M m m to O m Ln N l0 M n In Ln N N N Ln m r r -I M LD > N m m O N .--Ix 00 00 ri o m M 00 t Lnr-im M ri lD N N N M Ol MY) Ol r -i O Ln }' c -i Ol Ol m r, Ln '7 r, Ln 00 00 M M ri O Ol Ct 1,0 It 00 r -i N N N 'zt V Cr' lD t ri i-1 to M UCL r -I c -I r-1 c -I ri c -I i -i N N o (o Ln Ln LD LD lD Ol Ol Ql ri c -I ri c -I Q c U 3 o O M M M ';t N N N O o O o M Ln Ln r- a --I M LD ri r1 Cl O o O 0 0 N N r -i r -i r -i N r -I rl ri Ol Dl LD LD �t 00 lD M r -I ri M m - Dl Ol Ol C;)Dl E LD w 00 N M M Cr m 00 00 X a m r-; r ra ri ri m m r9 v � OJ N m m Mri Ol c -i Ln M N ri s1 c -i M ri ci N M qt z ri ri r-1 Ct 00 N ri N Q't m rn 0 0 0 n N 00 N N LD lD o O m N in O M O O O O O O O 01 0't It 00 0 0 0 0 0 ri O O O O O O O O O O O O M O r -I O O O O O O O O O O O O V1 O O O O O O O O O O O O O O O O O c -I O O O O O O O O O O O o O O W � m ri � LD N .-i lD rj N O N Ql M lD N N N � Ln Cn M t LD • O � ri M Ol O ri LD m M O 0 O W �t t\ W r-1 n ,� Ol Ol Ln 00 00 N N ri M W r -I M ,� M m m Ir-, Ln Ln LD 00 E lD N ^ i� M M Ln N N Ol 00 t\ d' ^ ri (rV N N 00 N ri ri .1 N N M ri r -i c -I M N N ri m Ln N J Q1 m Cl 0 N 0 N r, 00 N 00 ri m lD N r, NI�T NLll 't O Wrl N > N00 N � Ln N0 N Ln rl M C0 lD to N lD O N N O r- LD N ill lD M N 00 n m O N Ol O M O LD d' N Ol lD N^ Ln o^ l0 LD ri N M rj O o t\ LIl n ri 0 M M N In to lD r� lD W N N N C, ri 1-1ri M � M I'D E$ ON V LD O r- o ri ri M 00 N rl N N N It N Ln It O 00 N^ �- N N ri N N Ln ri i� r� O O N M LD 00 � LD Ln O d' ill N Ql 3 M Ln O r -I M LD N N c1 YO OM m rl M N �, > Ct M � n LO r� 00 V lD 00 00 a1 O N N N `� O ri .1 o Ct Ct In L0 r- mr -I N':I' Ln LD r' ri N M Gt N 00 M O N M Ln n 00 M O ri N M M LD r, M M O r-1 N='T Cf ';t 't'zT 'ct o 0 0 0 0 0 0 ri ri r-1 ri r -I r -I ri N N N N N N N N N N M M O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O m m m m m m 'j- IZI- v �t I;t lzr lz�- It It 't lzr qt It �t I;T �t lzzr V 'T �t 'T Iz V v Q 00 00 00 00 00 00 00 00 00 0o 00 oD 00 00 CC) 00 00 00 00 00 00 00 0o 00 00 00 00 00 0o 0o CX) 00 v Y 00 W W 00 00 W W 00 W 00 CO W 00 00 N N N N LD N j' -;I �t LD LD LD 00 00 00 00 00 .0 ri M r -i N N N N m M m O ri Ln LD OlD N M r- 00 M M 'Z n 00 U) M M O ri N 00 LD 1.0 N n 00 M O 't 't �� ri .-I m M O O M Cl O O ri ri i1 1-1N ri ri N N N -i N CO r -i N N NM 0 0 0 0 0 ri 0 0 0 0 ri 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 m M m m N LDr-1 O '7 'll O 't � qT �' 't 'tqT Ct �t � -:I-ri qt d' � V CY 00 00 co W 00 ri n m 00 00 N 00 00 00 m 00 W 00 W W 00 00 00 00 W 00 r, m m 00 00 w 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N m N W 0 N m N W 0 N m M M M c~ -i � m 0 N M M O r~i �' O O O o 0 0 0 r -I ri ri ri a1 ri N N N N N N N N N N M M Q O o O o o O O o O O O O O O O O O O o O O O O O O O O O o O O O M MM MM M It � �tCt It It It It Ct 't It � Ct It It I �t It �t �tIt't't 0_ .0 00 00 DO CO 00 W 00 00 00 W 00 W W W o0 W 00 W 00 D0 W W W 00 Do W W 00 W 00 00 O N m N M N r-1 Ln LD r� n n r- n 00 1� r r, I\ Ln LD I� I\ W W I� r� N N N n 00 r-1 l0 M Q1 X W M M n lD lD lD LD LD N lD LD tD LD W LD lD W M O M lD 1.0 t O M LD LD t Ln LD Lfl m M M LD tD lD lD Lq Ln lD LD Lp lD Ln m m Ln LD Ln LD l0 -j: V M lD lD Ln d' r-+ Q U O O O o O O O O O o O O O O O O, O O O o O O O O O O O O o O O O Ln U O L11 Ln LD o 0 0 o m o LD 0 0 0 0 1, rn m co � m oo D o m .-1 m D o m �+ m m vL; r1 c -I r� 0 0 0 0 r--1 N N 0 0 0 0 r-1 N r --I .� .-1 N e-1 O O 00 Ln 4 O O N N N x m Ln Ln co 0 0 M r1 Ln m m N m m LD Il m 0 0 O m m r -i N r --I O 0 0 0 0 0 0 0 N M M O N N N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x a-1 1, N 00 r Ol O M N M r-1 O 1l M N 1T N m O Ln lD -1 O m LD m m O m N O m > Ln Ln M � m ZY Ln Ln m 4 In � r- O co 111 00 r-1 N LD m I- m LD co 1-1 It N m r -i I- to N N M 1, n N N N n N It N n m N m LO lO lD r1 n In 00 00 00 r--1 M '� T U [0 a-1 r -I r -I r-/ c -I r--1 r,4 r-1 p_ D_ U 3 0 O rn U) 0 O O1 O1 Cl) M Cr) O1 D1 m 0 o M m M M p Q1 Ol Ln ct Ln Ln r-1 r-1 -1 -1 00 m O1 Q1 <T Ql O1 0 M N N X I? 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O Ln r - r0 lD 1100 lD m Ln m zt Ln L/l m In lD LD m In lD 00 M lz� m m 1100 lD M LD U) o N t 0 0 0, O O O O O O O O O o 0 0 0 �, O O N O O N O O �, 0 0 0, 0 O C Q u Ln T Y_ u O J N O O m O m N Ln Ln C -i Ln O1 Ln 1-1 LD Lfl m Ct O N O N O 1- d' 0 > 0 0 N o � H In t m't 4 m m .-1 M m m N N � c-1 N m -1 O N m V O Ln 1- n ci X v f0 ci 1, o o � m LD LD Ln -1 O Ln M Ln -1 Dl M M 00 t � � m M M 't m C1 m Ln .-i r-+ -1 0 0 0 O o 0 0 0 0 0 0 o Ln o o m LD m N -1 1-1 m CD o O O O o o o 0 0 0 0 0 o 0 o o 0 o o O o 0 o O o O 6 X m m M't m lD m Ln m m M 1- 't 't O N N m M N't m N m O O lD Ln 1-1 m tT > m It 1-1 M N Ln m 1- r r- m 1- m O O m m � Ln m O r- m m � m c -i M d' m d' 1- N N O r, ri r1 m c -I n O r1 O LD N m d' Ol -1 � 1\ 00 lD t M Il, lD M U r0 i-1 ci c -I �--I c -I c -I e-1 N .-I a -i i -I N Dl N Ol ri a -i p_ Q 0A U 3 O O O r1 r1 O 1\ o O m m fV m m Ln Ln d' m -i LD O O O 1, n n N p m m M ci c -I M LD L,D lD Ln N N r-1 O d' 1� n 1100 1\ n� N N N m ri ci r-1 1-1 -1 N co 'T -1 m N N N N N N N Ll X Q m 0A Q1 m d' lD N N M N n n M n m lD r1 O1 't Ln N �l M r1 -1 N m n LD 1100 M M -1 Q O N 0 0 0 Ln m't c-1 M d' m _I Ln N O O Lfl O cV O o" O m 0 m p .-1 O O -4 O O o o�'T O O O O O -i 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r1 0 0 Ln O O O O O O O o O O O O O O O O O O O O O O O O O O O O O O O w m ^ m M � m m lD M LT 1100 N m m Ln LD "-' N N rl lO N 1100 Ln M Ol r LD LD Lr) M N 0 m m m m^ O I� n M m pp I� N I� O N 1100 N Ql M O LO N O O N M m N O Ln In 00 N -1 m -1 M r1 M M r LD Lfl t O 111 Ln 1100 O N O m -1 m 1100 C O ^ m CY LD to c-1 -1 N d' -1 m m m N d' LD n Ln 00 -1 m m N N .-1 N ^ M O N 4J N rl I -i a-1 rl ci r1 r1 M a --I M m J r- n N N LD IT 00 1100 O lD m N N 1100 N N N m M m N m m N N m > O M M I �}' ri O M M Ql Ln Ql 1100 c-. �-i m LD N m � � cr � .-1 m m .-1 � rn C .� m r- N m M . m N LT lD o . H N -4 m -i f o �"1 m Cl r1 ci .l .l N N m LO LD LD 1� n i\ m Ol m ^ m al m 001 m m m c -I lD - lD m m m O N M N N N N N N N N N N N N N N N N c-1 M M M t � Ln 11O M F I� � 1\ 1\ N N N 1\ m lD Ln lD 1� N m lD Ol O m .--1 E IZT m N N lD M O LD m N Ol d' m Ln 11D .-I .-1 LD r1 V .-1 r m , l r-1 H Ln 0 i f� LT M m M N Ol .-1 Ln rl N �-4 m Ol CY O O m m 1\ Ol lD 1� M M LD O O I N ci N N M C 1100 LD n n 001 m Ql Ol r1 m m Ql Ln Dl c1 -4 > rn M N N N N N N N N N N N N N N N M `� .--I Iz M d' m 110 m M C E O Q r6 4J = I� Ln m Ln M Ln O LD rH LD N LD M LD LD Ln LD lD ID n LD m ID 001 ID O n N n rn r- T i\ Ln n M 001 M O d- O m m O LD O m O Ol O O -1 N M m 1\ 0 0 0 0 0 0 0 Cl 0 0 0 0 0 0 0 0 0 0= 0 0 0 0 0 0 0 0 0 0 0 0 0 N m m m m m m m m m m m m m m m m m m v 0 � �r �r d a m rn rn rn rn m rn rn rn rn rn rn rn rn rn rn rn rn N rn rn C rn m m m m m m m m m v Y E c m m m m m m m m m m m m m m m m m 0. 1-1 m-1 m m m m m m m m m m _ 0 0 O n Ln M M -i N MLD 1' m m m fV M m 4 M m m m 0 0 Nm m Ln Ln N Ln m LD LD lD M O LD LD LO 1100 lD 1\ n n m O O O O C;.)O O .-I -4 -1 .-I H 0 0 0 0 0 0 0 0 h 0 0 0 0 0 0 0 0 r1 O N O O Ln 0 0 0 0 0 0 0 M M M M M M M M M O M M M M M M M m 1, d' '3- C-) 't d' 'T d' C d' V m m m m m m m M rH N m m m m m m m m M c CD Q 01 Ol N m m m m m m m O O O O O O O O O O O O O O O O O O N O O F0 0 0 0 0 0 0 0 0 0 1 F F f- F F F F F F F F F F F I- F F- F F Q F F F F F F F F- - 1" r" m m O r1 Nm � m L001, m M O N M;t Ln O m d' Ln Ln LO m m O -1 fV m Ln 1\ m Ln m lD LD LD LD LD 110 LD LD LD LD i- n i` r- � F 0 O O 0 0 O O a--1 r1 , " c -I ci N o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Q - m M M m m M rn M m m m m m m m M rn m m 't It d- 't 't ''t �' O_ m Ql Ol M. m m m T O1 m m cn Ql LT Dl LT 01 Ol m al LT Ol m m m m m 01 Ol M. m 01 i $ E v m r\ n Lo n N N v x w m to m IH o m n N Y M Ln 1p 1p rl n Cl rl ''i Q1 N M Q t U O O O O O O O O O O Oi V1 Y 0 , an O O T N N O c -I 00 Ln -i > m 4 W V O N m M �--I x v cro G lD O 00 Ol -q 00 O O m cr m N i c1 O r -I O r\ Lll O 0-0 0 0 0 0 0 -1 0 0 0 x m 2t m to LD i\ -1 a' -1 m m a' t\ C1 00 W M O OO N O V Ct 'CY �T+ n M M Ln Cl N O m Ln Ln m m U t9 C. r-4 Q � t9 U N N N LD LD LD m m m m O 00 m 00 Lo W lD O 00 00 E N N N M M Ln m N lL x C' r9 � v � 01 a N O m n O Ln M n i1 m 0 0 0 0 o ' 0 0 0 0 0 0 o 0 0 0 0 0 00 -1Ln 00_I rn - O lD LD � 000 a' O1 s Ln Lo Ln N LnCY) 00 O O O O L10 `'1 LD 6 Ln LD - c -I - - C r, �. O N N co co Q1 m r -I N N ri J i 00 NQ r1 .--I Q c-I W NN N > > O m Q1 M c1 �-1 �t . -i .-I to to O � C$ v Lri Ln C N -4 N lD c-1 -- Cl r- 0 m m m m M m N m N A -1 N Ln N 00 N O N c -I m S C i QJ Cl Ln t\ 4 O Ln M a' N a' lD O rj n ci lD o Cl t\ M > M T M M M M M N .- i .-I C> C N m m m O c -I N m O .1 CY lD O M ci _ .1 ri N N N Nm m N lD M O O O O O O O O O O O In Q d' a' V T -U -;1 3' N Uc -i N> Cl Cl Cl 01 m m Cl Q r, 00 M Q1 Y N00 N N N N N N0 c1 c -I ri 1-1 1-1 i-1 ri -1 co 00 00 000 -1 N0 N0 N N Nm N N M 00 C 0 0 0 0 rD O It (D cn a) a' t O Ql /T O1 Ql Ql al N 0) C1 > > 0 0 0 0 0 0 0 0 I 1 _ W M O ci N M O r-1 -I V] N V) m V) a' V) ci c -i -1 N N N N m m J J J J �- O Kt O 't O O �� O O O v.4 O O I O O O a m rn rn m m m m m H H H H APPENDIX F CAPITAL IMPROVEMENT PROGRAM DETAILED COST ESTIMATES BOTHELL SEWER COMP PLAN ASSUMPTIONS FOR COST ESTIMATES Tax rate 10 % Contingency 20% Engineering and Administrative Costs 30 % Mobilization, Cleanup and Demobilization 10% of subtotal without tax and contingency (round to $1000) PIPING 4 -inch PVC Sewer Pipe, Including Fittings $ 40 =UNIT PRICE 6 -inch PVC Sewer Pipe, Including Fittings $ 50 =UNIT PRICE 8 -inch PVC Sewer Pipe, Including Fittings $ 70 =UNIT PRICE 10 -inch PVC Sewer Pipe, Including Fittings $ 100 =UNIT PRICE 12 -inch PVC Sewer Pipe, Including Fittings $ 120 =UNIT PRICE 18 -inch PVC Sewer Pipe, Including Fittings $ 150 =UNIT PRICE 21 -inch PVC Sewer Pipe, Including Fittings $ 180 =UNIT PRICE 8" DI Force Main, Includes Finings $ 100 =UNIT PRICE 10" DI Force Main, Includes Fittings $ 140 =UNIT PRICE 8" DI Deep Sewer Pipe, Includes Fittings $ 120 =UNIT PRICE 10" DI Deep Sewer Pipe, Includes Fittings $ 150 =UNIT PRICE Side Sewer $ 3,000 =UNIT PRICE (Estimated at 60 foot intervals) Cured-in-Place Pipe $ 120 =LF MANHOLES & WELLS 48" Manhole $ 6,000 =UNIT PRICE (Estimated at 300 foot intervals) 48" Manhole, Extra Depth $ 250 =VF 48" Manhole Rehabilitation $ 800 =UNIT PRICE SITE CONTROL Fences & Gates $ 40 =UNIT PRICE Locate Existing Utilities 3% =LUMP SUM Erosion Control I% =LUMP SUM Bypass Pumping 2% =LUMP SUM EXCAVATION & PAVEMENT Trench Safety Systems 2% of subtotal without tax and contingency (round to $1000) TRENCH WIDTH PIPE SIZE WIDTH (ft) 4 2.5 6 2.5 8 3.0 10 3.5 12 3.5 16 4.0 18 4.5 21 5 LANE WIDTH WIDTH (ft) 12.0 MATL UNT EXTRA FRACTION DEPTH WEIGHT MATL OF LENGTH PRODUCT (feet) (TN/CY) FACTOR Gravel Backfill 12.00 1.0 1.1 1.00 0.489 * Trench Width = CY/LF Cost per TN $ 30.00 CDF 4.00 1.0 1.1 1.00 0.163 *Trench Width= CY/LF Cost per CY $ 150.00 Foundation Material 0.50 1.8 1.1 1.00 0.037 * Trench Width = TN/LF Cost per CY $ 40.00 Asphalt Concrete Pavement Repair NA NA NA NA 0.222 * Lane Width = SQ YD/LF Cost per SQ YD $ 25.00 Crushed Surfacing, Top Course 0.17 1.8 1.1 1.00 0.012 *Lane Width= TN/LF Cost per TN $ 30.00 Asphalt Concrete Paving Class B 0.25 1.800 1.1 1.00 0.018 * Trench Width = TN/LF Cost per TN $ 120.00 Traffic Control $ 80 EA 16 HRS per 100 feet CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -1 100th Avenue NE 10 -inch Gravity Sewer Replacement UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 12,800 $ 12,800 2 Trench Safety Systems LUMP SUM $ 2,300 $ 2,300 3 Erosion Control LUMP SUM $ 1,200 $ 1,200 4 Locate Existing Utilities LUMP SUM $ 3,400 $ 3,400 5 Traffic Control 60 HR $ 80 $ 4,800 6 Bypass Pumping LUMP SUM $ 2,300 $ 2,300 7 10" DI Deep Sewer Pipe, Includes Fittings 350 LF $ 150 $ 52,500 8 Side Sewer 6 EA $ 3,000 $ 17,400 9 48" Manhole 2 EA $ 6,000 $ 13,200 10 Crushed Surfacing Top Course 20 TN $ 30.00 $ 600 11 48" Manhole, Extra Depth 7 VF $250 $ 1,750 12 Asphalt 80 TN $ 120 $ 9,600 13 Gravel Backfill 600 TN $ 30 $ 18,000 Subtotal................................................................................................................................. $ 140,000 Taxrate(10%)............................................................................................ 14,000 Subtotal: ................................................................................................................................ $ 154,000 Contingency(20%)..................................................................................... $ 31,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 185,000 Engineering and Administrative Costs(30%): ................................................................. $ 56,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 241,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -2 NE 190th Street, NE 189th Place, NE 187th Street, 88th Avenue NE, and 89th Avenue NE Gravity Sewer Installation UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 37,500 $ 37,500 2 Trench Safety Systems LUMP SUM $ 6,600 $ 6,600 3 Erosion Control LUMP SUM $ 3,400 $ 3,400 4 Locate Existing Utilities LUMP SUM $ 9,900 $ 9,900 5 Traffic Control 250 HR $ 80 $ 20,000 6 Bypass Pumping LUMP SUM $ 6,600 $ 6,600 7 8" Gravity Sewer Main 1,520 LF $ 70 $ 106,400 8 Side Sewer 25 EA $ 3,000 $ 75,900 9 48" Manhole 6 EA $ 6,000 $ 36,600 10 Crushed Surfacing Top Course 60 TN $ 30.00 $ 1,800 11 Asphalt 340 TN $ 120 $ 40,800 12 Gravel Backfill 2,230 TN $ 30 $ 66,900 Subtotal................................................................................................................................. $ 413,000 Taxrate(10%)............................................................................................ 41,000 Subtotal: ................................................................................................................................ $ 454,000 Contingency(20%)..................................................................................... $ 91,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 545,000 Engineering and Administrative Costs(30%): ................................................................. $ 164,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 709,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -3 Beardslee Place, Sunrise Drive and Valley View Street 8 -inch Gravity Sewer Installation UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 47,700 $ 47,700 2 Trench Safety Systems LUMP SUM $ 8,400 $ 8,400 3 Erosion Control LUMP SUM $ 4,200 $ 4,200 4 Locate Existing Utilities LUMP SUM $ 12,600 $ 12,600 5 Traffic Control 320 HR $ 80 $ 25,600 6 Bypass Pumping LUMP SUM $ 8,400 $ 8,400 7 8" Gravity Sewer Main 1,940 LF $ 70 $ 135,800 8 Side Sewer 32 EA $ 3,000 $ 96,900 9 48" Manhole 8 EA $ 6,000 $ 45,000 10 Crushed Surfacing Top Course 80 TN $ 30.00 $ 2,400 11 Asphalt 430 TN $ 120 $ 51,600 12 Gravel Backfill 2,850 TN $ 30 $ 85,500 Subtotal................................................................................................................................. $ 525,000 Taxrate(10%)............................................................................................ 53,000 Subtotal: ................................................................................................................................ $ 578,000 Contingency(20%)..................................................................................... $ 116,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 694,000 Engineering and Administrative Costs(30%): ................................................................. $ 208,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 902,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -4 NE 196st Street and SR 52710 -inch Gravity Sewer Replacement UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 8,400 $ 8,400 2 Trench Safety Systems LUMP SUM $ 1,500 $ 1,500 3 Erosion Control LUMP SUM $ 800 $ 800 4 Locate Existing Utilities LUMP SUM $ 2,200 $ 2,200 5 Traffic Control 80 HR $ 80 $ 6,400 6 Bypass Pumping LUMP SUM $ 1,500 $ 1,500 7 10" Gravity Sewer Main 250 LF $ 100 $ 25,000 8 Side Sewer 4 EA $ 3,000 $ 12,600 9 48" Manhole 2 EA $ 6,000 $ 10,800 10 Crushed Surfacing Top Course 100 TN $ 30.00 $ 3,000 11 Asphalt 60 TN $ 120 $ 7,200 12 Gravel Backfill 430 TN $ 30 $ 12,900 Subtotal................................................................................................................................. $ 93,000 Taxrate(10%)............................................................................................ 9,000 Subtotal: ................................................................................................................................ $ 102,000 Contingency(20%)..................................................................................... $ 20,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 122,000 Engineering and Administrative Costs(30%): ................................................................. $ 37,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 159,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -5 NE 186th Street and 98th Avenue NE Gravity 10 -Inch Gravity Sewer Replacement and Waynita Drive 12 -Inch Gravity Sewer Replacement UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 15,200 $ 15,200 2 Trench Safety Systems LUMP SUM $ 2,700 $ 2,700 3 Erosion Control LUMP SUM $ 1,400 $ 1,400 4 Locate Existing Utilities LUMP SUM $ 4,100 $ 4,100 5 Traffic Control 70 HR $ 80 $ 5,600 6 Bypass Pumping LUMP SUM $ 2,700 $ 2,700 7 10" Gravity Sewer Main 310 LF $ 100 $ 31,000 8 12" Gravity Sewer Main 120 LF $ 180 $ 21,600 9 Side Sewer 7 EA $ 3,000 $ 21,600 10 Crushed Surfacing Top Course 100 TN $ 30.00 $ 3,000 11 48" Manhole 4 EA $ 6,000 $ 26,400 12 Asphalt 100 TN $ 120 $ 12,000 13 Gravel Backfill 640 TN $ 30 $ 19,200 Subtotal................................................................................................................................. $ 167,000 Taxrate(10%)............................................................................................ 17,000 Subtotal: ................................................................................................................................ $ 184,000 Contingency(20%)..................................................................................... $ 37,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 221,000 Engineering and Administrative Costs(30%): ................................................................. $ 66,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 287,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -6 SR 522 18 -INCH GRAVITY SEWER REPLACEMENT UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 10,600 $ 10,600 2 Trench Safety Systems LUMP SUM $ 1,800 $ 1,800 3 Erosion Control LUMP SUM $ 900 $ 900 4 Locate Existing Utilities LUMP SUM $ 2,600 $ 2,600 5 Traffic Control 160 HR $ 80 $ 12,800 6 Bypass Pumping LUMP SUM $ 1,800 $ 1,800 7 18" Gravity Sewer Main 250 LF $ 150 $ 37,500 8 Side Sewer 4 EA $ 3,000 $ 12,600 9 48" Manhole 2 EA $ 6,000 $ 10,800 10 Crushed Surfacing Top Course 20 TN $ 30.00 $ 600 11 Asphalt 60 TN $ 120 $ 7,200 12 Gravel Backfill 550 TN $ 30 $ 16,500 Subtotal................................................................................................................................. $ 116,000 Taxrate(10%)............................................................................................ 12,000 Subtotal: ................................................................................................................................ $ 128,000 Contingency(20%)..................................................................................... $ 26,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 154,000 Engineering and Administrative Costs(30%): ................................................................. $ 46,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 200,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -9 Canyon Creek 8 -inch Bypass Sewer and 126th Ave 10 -Inch Gravity Sewer Replacement UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 22,700 $ 22,700 2 Trench Safety Systems LUMP SUM $ 4,000 $ 4,000 3 Erosion Control LUMP SUM $ 2,000 $ 2,000 4 Locate Existing Utilities LUMP SUM $ 6,000 $ 6,000 5 Traffic Control 150 HR $ 80 $ 12,000 6 Bypass Pumping LUMP SUM $ 4,000 $ 4,000 7 8" Gravity Sewer Main 300 LF $ 70 $ 21,000 8 10" Gravity Sewer Main 600 LF $ 100 $ 60,000 9 Side Sewer 15 EA $ 3,000 $ 45,000 10 48" Manhole 5 EA $ 6,000 $ 30,000 11 Crushed Surfacing Top Course 100 TN $ 30.00 $ 3,000 12 Asphalt 200 TN $ 120 $ 24,000 13 Gravel Backfill 520 TN $ 30 $ 15,600 Subtotal................................................................................................................................. $ 250,000 Taxrate(10%)............................................................................................ 25,000 Subtotal: ................................................................................................................................ $ 275,000 Contingency(20%)..................................................................................... $ 55,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 330,000 Engineering and Administrative Costs(30%): ................................................................. $ 99,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 429,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -10 NE 175th Street 21 -inch Gravity Sewer Replacement UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 17,200 $ 17,200 2 Trench Safety Systems LUMP SUM $ 3,000 $ 3,000 3 Erosion Control LUMP SUM $ 1,500 $ 1,500 4 Locate Existing Utilities LUMP SUM $ 4,500 $ 4,000 5 Traffic Control 140 HR $ 80 $ 11,200 6 Bypass Pumping LUMP SUM $ 3,000 $ 3,000 7 21 " Gravity Sewer Main 400 LF $ 180 $ 72,000 8 Side Sewer 7 EA $ 3,000 $ 20,100 9 48" Manhole 2 EA $ 6,000 $ 13,800 10 Crushed Surfacing Top Course 100 TN $ 30.00 $ 3,000 11 Asphalt 90 TN $ 120 $ 10,800 12 Gravel Backfill 980 TN $ 30 $ 29,400 Subtotal................................................................................................................................. $ 189,000 Taxrate(10%)............................................................................................ 19,000 Subtotal: ................................................................................................................................ $ 208,000 Contingency(20%)..................................................................................... $ 42,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 250,000 Engineering and Administrative Costs(30%): ................................................................. $ 75,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 325,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -11 NE 101ST PL NE 8 -INCH GRAVITY SEWER REPLACEMENT UNIT NO. ITEM QUANTITY PRICE AMOUNT I Mobilization, Cleanup, and Demobilization LUMP SUM $ 16,600 $ 16,600 2 Trench Safety Systems LUMP SUM $ 2,900 $ 2,900 3 Erosion Control LUMP SUM $ 1,500 $ 1,500 4 Locate Existing Utilities LUMP SUM $ 4,400 $ 4,400 5 Traffic Control 110 HR $ 80 $ 8,800 6 Bypass Pumping LUMP SUM $ 2,900 $ 2,900 7 8" Gravity Sewer Main 650 LF $ 70 $ 45,500 8 Side Sewer 11 EA $ 3,000 $ 32,400 9 48" Manhole 3 EA $ 6,000 $ 19,200 10 Crushed Surfacing Top Course 30 TN $ 30.00 $ 900 11 Asphalt 150 TN $ 120 $ 18,000 12 Gravel Backfill 960 TN $ 30 $ 28,800 Subtotal................................................................................................................................. $ 182,000 Tax rate(10%)............................................................................................ 18,000 Subtotal: ................................................................................................................................ $ 200,000 Contingency(20%)..................................................................................... $ 40,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 240,000 Engineering and Administrative Costs(30%): ................................................................. $ 72,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 312,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -12 96TH AVE NE 8 -INCH GRAVITY SEWER MAIN REPLACEMENT UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 60,100 $ 60,100 2 Trench Safety Systems LUMP SUM $ 6,500 $ 6,500 3 Erosion Control LUMP SUM $ 3,300 $ 3,300 4 Locate Existing Utilities LUMP SUM $ 9,800 $ 9,800 5 Traffic Control 240 HR $ 80 $ 19,200 6 Bypass Pumping LUMP SUM $ 6,500 $ 6,500 7 8" Gravity Sewer Main 1,500 LF $ 70 $ 105,000 8 Side Sewer 25 EA $ 3,000 $ 75,000 9 48" Manhole 6 EA $ 6,000 $ 36,000 10 Crushed Surfacing Top Course 60 TN $ 30.00 $ 1,800 11 Asphalt 330 TN $ 120 $ 39,600 12 Gravel Backfill 2,200 TN $ 30 $ 66,000 Subtotal................................................................................................................................. $ 429,000 Taxrate(10%)............................................................................................ 43,000 Subtotal: ................................................................................................................................ $ 472,000 Contingency(20%)..................................................................................... $ 94,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 566,000 Engineering and Administrative Costs(30%): ................................................................. $ 170,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 736,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -13 94TH AVE NE 8 -INCH GRAVITY SEWER REPLACEMENT UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 15,300 $ 15,300 2 Trench Safety Systems LUMP SUM $ 2,700 $ 2,700 3 Erosion Control LUMP SUM $ 1,400 $ 1,400 4 Locate Existing Utilities LUMP SUM $ 4,100 $ 4,100 5 Traffic Control 100 HR $ 80 $ 8,000 6 Bypass Pumping LUMP SUM $ 2,700 $ 2,700 7 8" Gravity Sewer Main 600 LF $ 70 $ 42,000 8 Side Sewer 10 EA $ 3,000 $ 30,000 9 48" Manhole 3 EA $ 6,000 $ 18,000 10 Crushed Surfacing Top Course 30 TN $ 30.00 $ 900 11 Asphalt 140 TN $ 120 $ 16,800 12 Gravel Backfill 880 TN $ 30 $ 26,400 Subtotal................................................................................................................................. $ 169,000 Taxrate(10%)............................................................................................ 17,000 Subtotal: ................................................................................................................................ $ 186,000 Contingency(20%)..................................................................................... $ 37,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 223,000 Engineering and Administrative Costs(30%): ................................................................. $ 67,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 290,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -14 EAST RIVERSIDE DRIVE TO LIFT STATION NO.2 GRAVITY SEWER REPLACEMENT UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 36,900 $ 36,900 2 Trench Safety Systems LUMP SUM $ 6,500 $ 6,500 3 Erosion Control LUMP SUM $ 3,300 $ 3,300 4 Locate Existing Utilities LUMP SUM $ 9,800 $ 9,800 5 Traffic Control 240 HR $ 80 $ 19,200 6 Bypass Pumping LUMP SUM $ 6,500 $ 6,500 7 8" Gravity Sewer Main 1,500 LF $ 70 $ 105,000 8 Side Sewer 25 EA $ 3,000 $ 75,000 9 48" Manhole 6 EA $ 6,000 $ 36,000 10 Crushed Surfacing Top Course 60 TN $ 30.00 $ 1,800 11 Asphalt 330 TN $ 120 $ 39,600 12 Gravel Backfill 2,200 TN $ 30 $ 66,000 Subtotal................................................................................................................................. $ 406,000 Taxrate(10%)............................................................................................ 41,000 Subtotal: ................................................................................................................................ $ 447,000 Contingency(20%)..................................................................................... $ 89,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 536,000 Engineering and Administrative Costs(30%): ................................................................. $ 161,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 697,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT GV -15 Lift Station 4 Abandonment Gravity Sewer to North Creek Heights UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 48,100 $ 48,100 2 Trench Safety Systems LUMP SUM $ 9,600 $ 9,600 3 Erosion Control LUMP SUM $ 4,400 $ 4,400 4 Locate Existing Utilities LUMP SUM $ 13,000 $ 13,000 5 Traffic Control 310 HR $ 80 $ 24,800 6 Bypass Pumping LUMP SUM $ 8,500 $ 8,500 7 8" Gravity Sewer Main 1,900 LF $ 100 $ 190,000 8 Side Sewer 32 EA $ 3,000 $ 95,100 9 48" Manhole 7 EA $ 6,000 $ 43,800 10 Crushed Surfacing Top Course 50 TN $ 30.00 $ 1,500 11 Asphalt 50 TN $ 120 $ 6,000 12 Gravel Backfill 2,790 TN $ 30 $ 83,700 13 Lift Station No. 4 Demolition LUMP SUM $ 10,000 $ 10,000 Subtotal................................................................................................................................. $ 529,000 Taxrate(10%)............................................................................................ 53,000 Subtotal: ................................................................................................................................ $ 582,000 Contingency(20%)..................................................................................... $ 116,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 698,000 Engineering and Administrative Costs(30%): ................................................................. $ 209,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 907,000 CITY OF BOTHELL PRELIMINARY PROJECT COST ESTIMATE PROPOSED SYSTEM IMPROVEMENT LS -1 Lift Station 1 Improvements UNIT NO. ITEM QUANTITY PRICE AMOUNT 1 Mobilization, Cleanup, and Demobilization LUMP SUM $ 32,800 $ 32,800 2 Trench Safety Systems LUMP SUM $ 7,500 $ 7,500 3 Erosion Control LUMP SUM $ 3,800 $ 3,800 4 Locate Existing Utilities LUMP SUM $ 11,200 $ 11,200 5 Traffic Control 310 HR $ 80 $ 24,800 6 Bypass Pumping LUMP SUM $ 7,500 $ 7,500 7 8" HDPE Sewer Main 1,900 LF $ 75 $ 142,500 8 Connection to Existing System 2 EA $ 5,000 $ 10,000 9 Crushed Surfacing Top Course 210 TN $ 30.00 $ 6,300 10 Asphalt 250 TN $ 120 $ 30,000 11 Gravel Backfill 2,790 TN $ 30 $ 83,700 12 Bridge Crossing LUMP SUM $ 100,000 $ 100,000 Subtotal................................................................................................................................. $ 361,000 Taxrate(10%)............................................................................................ 36,000 Subtotal: ................................................................................................................................ $ 397,000 Contingency(20%)..................................................................................... $ 79,000 TOTAL ESTIMATED CONSTRUCTION COST: ............................................................ $ 476,000 Engineering and Administrative Costs(30%): ................................................................. $ 143,000 TOTAL ESTIMATED PROJECT COST: .......................................................................... $ 619,000 APPENDIX G RATE AND GFC ORDINANCES ORDINANCE NO. 2235 (2017) AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, ESTABLISHING NEW USER RATES FOR CLASS II, CLASS III, CLASS IV, AND CLASS V SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL; AND AMENDING CHAPTER 18.03.210 OF THE BOTHELL MUNICIPAL CODE; AND PROVIDING FOR AN EFFECTIVE DATE; AND FOR SUMMARY PUBLICATION WHEREAS; the City Council deems it necessary to increase the user rates within and without the City limits of the City of Bothell. NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON, DOES ORDAIN AS FOLLOWS: Section 1. Chapter 18.03.210 of the Bothell Municipal Code, is hereby amended to read as follows: 18.03.210 Rates - Users within city limits. The following charges shall be made by the City for furnishing sewer service within the City limits: A. Class 1. Single-family residence: $11� $120.10 every two months for each housekeeping unit, together with an additional charge measured by multiplying the annualized winter -average water usage from the prior year which exceeds 200 cubic feet per month by $3 95 $3.98 per 100 cubic feet of excess. The winter period for this purpose is defined as November 1st through June 30th. B. Class II. All commercial uses, which includes all uses not otherwise defined in Class I, Class III, Class IV and Class V: A minimum bi-monthly charge of $152.28 157.91, plus a customer equivalent charge measured by multiplying the water consumption and each occupancy which exceeds 750 cubic feet in any month by $9.76 $10.12 per 100 cubic feet of excess. C. Class III. Public and private schools: A minimum bi-monthly charge of $152.2 153.35 per school together with an additional charge each month at the rate of $9:76 10.12 per 100 cubic feet in excess of 750 cubic feet per month of water consumption per separate building; provided, however, during the months when school is not in session for the entire month, the bi-monthly charge shall be $304.51 $315.78 per school. D. Class V. Multiple unit residences, including duplexes, triplexes, fourplexes, hotels, motels, cabins, apartments, condominiums and all of their housekeeping units, except mobile home parks: A minimum bi-monthly charge of $152.29-1157.91 plus a customer equivalent charge measured by multiplying the water consumption which exceeds 750 cubic feet in any month by $9-.76 $10.12 per 100 cubic feet of excess. E. In special cases, single-family residents will be billed according to the following policies: Special Sewer Rate Policy Case New homes Billed at system average charge until use is established. Changes in Billed only system property average charge until ownership use is established. Changes in Billed only system tenancy average charge until use is established. Non -water Billed at system customers average charge. Leak Billed per adjusted adjustments winter volume. City will factor water leak adjustment into calculation for sewer rate. E. Utility Tax. All charges set forth in this section shall be subject to the city's utility tax as set forth in BMG 5.08.020, which are not included in charges shown in BMC 18.03.210. -2- 2235 (2017) Section 2. Severability. If any section, sub -section, sentence, clause or phrase of this ordinance should be held to be invalid or unconstitutional by a court of competent jurisdiction, such invalidity or unconstitutionality shall not affect the validity of constitutionality of any other section, sub -section, sentence, clause or phrase of this ordinance. Section 3. Savings. The enactments of this ordinance shall not affect any case, proceeding, appeal or other matter currently pending in any court or in any way modify any right or liability, civil or criminal, which may be in existence on the effective date of this ordinance. Section 4._ Referendum and Effective Date. This ordinance, being an exercise of a power specifically delegated to the City legislative body, is not subject to referendum, and shall take effect January 1, 2018, which is not less than five (5) days after passage and publication of the ordinance or a summary thereof consisting of the title. Section 5. Corrections. The City Clerk and the codifiers of this ordinance are authorized to make necessary corrections to this ordinance including, but not limited to, the correction of scrivener's/clerical errors, references, ordinance numbering, section/subsection numbers and any references thereto. APPROVED: 11 _1k I A DAVINA DUERR DEPUTY MAYOR ATTE /A THENTICATED: LAUR ATHAWAY CITY CLERK APPROVED AS TO FORM: FILED WITH THE CITY CLERK: 10/09/2017 PASSED BY THE CITY COUNCIL: 10/17/2017 PUBLISHED: 10/20/2017 EFFECTIVE DATE: 01/01/2018 ORDINANCE NO.: 2235 (2017) -3- 2235 (20 1 7) SUMMARY OF ORDINANCE NO. 2235 (2017) City of Bothell, Washington On the 17th day of October, 2017, the City Council of the City of Bothell passed Ordinance No. 2235 (2017). A summary of the content of said Ordinance, consisting of the title, is provided as follows: AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, ESTABLISHING NEW USER RATES FOR CLASS II, CLASS 111, CLASS IV, AND CLASS V SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL; AND AMENDING CHAPTER 18.03.210 OF THE BOTHELL MUNICIPAL CODE The full text of this Ordinance will be mailed�upon request. JRA HATI CITY CLE FILED WITH THE CITY CLERK: 10/09/2017 PASSED BY THE CITY COUNCIL: 10/17/2017 PUBLISHED: 10/20/2017 EFFECTIVE DATE: 01/01/2018 ORDINANCE NO.: 2235 (2017) -4- 2235 (2017) AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, AMENDING CHAPTER 18.03.210 OF THE BOTHELL MUNICIPAL CODE TO ESTABLISH NEW USER RATES FOR CLASS III SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL. WHEREAS; the City Council deems it necessary to correct an error in the recently - adopted sanitary sewer user rates for public and private schools within and without the City limits of the City of Bothell. NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON, DOES ORDAIN AS FOLLOWS: Section 1. Section 18.03.210 of the Bothell Municipal Code and the corresponding portions of Ordinance No. 2235 § 1 (2017) are hereby amended to read as follows, with new text shown by underline and deletions shown by stFikethF9Ug#; all other provisions of this section shall remain unchanged and in full force: 18.03.210 Rates - Users within city limits. The director of public works is authorized to adopt administrative procedures for the purpose of administering the provisions of this chapter, including the procedure for annual calculation of average winter water consumption. The following charges shall be made by the City for furnishing sewer service within the City limits: A. Class I. Single-family residence: $120.10 every two months for each housekeeping unit, together with an additional charge measured by multiplying the annualized winter -average water usage (AWWU) from the prior year which exceeds 200 cubic feet per month by $3.98 per 100 cubic feet of excess. The winter period for this purpose is defined as November 1 st through June 30th. The resulting AWWU will be the basis for such customer's monthly sewer rate for the following calendar year. B. Class ll. All commercial uses, which includes all uses not otherwise defined in Class I, Class III, Class IV and Class V: A minimum bi-monthly charge of $157.91, plus a customer equivalent charge measured by multiplying the water consumption and each occupancy which exceeds 750 cubic feet in any month by $10.12 per 100 cubic feet of excess. C. Class Ill. Public and private schools: A minimum bi-monthly charge of $153.35 157.91 per school together with an additional charge each month at the rate of $10.12 per 100 cubic feet in excess of 750 cubic feet per month of water consumption per separate building; provided, however, during the months when school is not in session for the entire month, the bi-monthly charge shall be $315.78 per school. D. Class V. Multiple unit residences, including duplexes, triplexes, fourplexes, hotels, motels, cabins, apartments, condominiums and all of their housekeeping units, except mobile home parks: A minimum bi-monthly charge of $157.91 plus a customer equivalent charge measured by multiplying the water consumption which exceeds 750 cubic feet in any month by $10.12 per 100 cubic feet of excess. E. In special cases, single-family residents will be billed according to the following policies: Special Case: Sewer Rate Policy: New homes Billed at system average charge until use is established. Changes in property Billed only system average charge until use is established. ownership Changes in tenancy Billed only system average charge until use is established. Non -water customers Billed at system average charge. Leak adjustments Billed per adjusted winter volume. City will factor water leak adjustment into calculation for sewer rate. F. Utility Tax. All charges set forth in this section shall be subject to the city's utility tax as set forth in BMC 5.08.020, which are not included in charges shown in BMC 18.03.210. Section 2. Severability. If any section, sub -section, sentence, clause or phrase of this ordinance should be held to be invalid or unconstitutional by a court of competent jurisdiction, such invalidity or unconstitutionality shall not affect the validity of constitutionality of any other section, sub -section, sentence, clause or phrase of this ordinance. Section 3. Savings. The enactments of this ordinance shall not affect any case, proceeding, appeal or other matter currently pending in any court or in any way modify any right or liability, civil or criminal, which may be in existence on the effective date of this ordinance. Section 4. This ordinance, being an exercise of a power specifically delegated to the City legislative body, is not subject to referendum, and shall take effect February 14, 2018, which is not less than five (5) days after passage and publication of the ordinance or a summary thereof consisting of the title. Section 5. Corrections. The City Clerk and the codifiers of this ordinance are authorized to make necessary corrections to this ordinance including, but not limited to, the correction of scrivener's/clerical errors, references, ordinance numbering, section/subsection numbers and any references thereto. -2- APPROVED: AND _RHEAUME MAYOR ATTEST/AUTHENTICATED: LAU RA +iATHAWAY CITY CLERK APPROVED AS TO FORM: PAAlnYRNE ATTORNEY FILED WITH THE CITY CLERK: 01/28/2018 PASSED BY THE CITY COUNCIL: 02/06/2018 PUBLISHED: 02/09/2018 EFFECTIVE DATE: 02/14/2018 ORDINANCE NO.: 2248 (2018) SUMMARY OF ORDINANCE NO. 2248 (2018) City of Bothell, Washington On the 6th day of February, 2018, the City Council of the City of Bothell passed Ordinance No.2248 (2018). A summary of the content of said Ordinance, consisting of the title, is provided as follows: AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, AMENDING CHAPTER 18.03.210 OF THE BOTHELL MUNICIPAL CODE TO ESTABLISH NEW USER RATES FOR CLASS III SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL. The full text of this Ordinance will be mailed upon request. LAURA HATHAWAY CITY CLERK FILED WITH THE CITY CLERK: 01/28/2018 PASSED BY THE CITY COUNCIL: 02/06/2018 PUBLISHED: 02/09/2018 EFFECTIVE DATE: 02/14/2018 ORDINANCE NO.: 2248-(2018) A- ORDINANCE NO. 2105 (2012 AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, ESTABLISHING NEW USER RATES FOR CLASS II, CLASS III, CLASS IV, AND CLASS V SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL; AND AMENDING SECTIONS 18.03.210, 18.03.220 and 18.03.280 OF THE BOTHELL MUNICIPAL CODE; AND PROVIDING FOR AN EFFECTIVE DATE; AND FOR SUMMARY PUBLICATION WHEREAS; the City Council deems it necessary to increase the user rates within and without the City limits of the City of Bothell. NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON, DOES ORDAIN AS FOLLOWS: Section 1. Section 18.03.210 of the Bothell Municipal Code, is hereby amended to read as follows: 18.03.210 Rates - Users within city limits. The following charges shall be made by the City for furnishing sewer service within the City limits: A. Class I. Single-family residence: $118.85 $129.67 every two months for each housekeeping unit; provided, however, low-income elderly customers shall be charged $89.13 $97.24 every two months. B. Class II. All commercial uses, which includes all uses not otherwise defined in Class I, Class III, Class IV and Class V: A minimum bi-monthly charge of $119.85 $129.67 per unit of occupancy, plus a customer equivalent charge measured by multiplying the water consumption and each occupancy which exceeds 750 cubic feet in any month by $4-.62 $8.31 per 100 cubic feet of excess. C. Class Ill. Public and private schools: A minimum bi-monthly charge of $119.95 $129.67 per school together with an additional charge each month at the rate of"$8.31 per 100 cubic feet in excess of 750 cubic feet per month per separate building; provided, however, during the months when school is not in session for the entire month, the bi-monthly charge shall be $237:67 $259.30 per school. 2105 (2012) D. Class V. Multiple unit residences, including duplexes, triplexes, fourplexes, hotels, motels, cabins, apartments, condominiums and all of their housekeeping units, except mobile home parks: A minimum bimonthly charge of $118.85 $129.67 plus a customer equivalent charge measured by multiplying the water consumption which exceeds 750 cubic feet in any month by $7.62 $8.31 per 100 cubic feet of excess. E. Utility Tax. All charges set forth in this section shall be subject to the City's utility tax as set forth in BMC 5.08.020, which are not included in charges shown in BMC 18.03.210. Section 2. Section 18.03.220 of the Bothell Municipal Code is hereby amended to read as follows: 18.03.220 Rates - Users outside city limits. The rates charged outside the pity limits of the pity of Bothell shall be the same for all user classifications as set forth in BMC 18.03.210 with the addition of a 25 percent surcharge added thereto. -2- 2105 (2012) _. -2- 2105 (2012) • • Section 3. Section 18.03.280 of the Bothell Municipal Code is hereby amended to read as follows: 18.03.280 Billing - Payment. A. Billing Period. Sewer service charges provided for in this chapter shall be billed by the finance department. Property owners shall be billed every other month on or about the fifth day of the month and charges shall be due 20 days after the date of invoice. Delinquent Accounts- Penalty - interest Q - a � + as . All charges for sewer service furnished by the city shall be due and payable to the city on the date shown on the face of the bill. Charges for services remaining unpaid at the close of business on the twentieth day following the billing date shall be considered delinquent and automatically subject to an additional late charge as a penalty. Late charges shall be as established by resolution of the city. C. Delinquent Accounts - Sewer Lien. In addition to all other remedies authorized by this chapter, the city shall have a lien for unpaid rates and charges for sewer service, penalties levied pursuant to RCW 35.67.190 and BMC 18.03.570 as now existing or hereafter amended, and connection charges, including interest thereon, against the premises to which the service has been furnished or is available. The city may foreclose the lien under procedures set forth in Chapter 35.67 RCW, as now existing or hereafter amended. D. Sewer Lien - Effective Period. The city's sewer lien shall be effective for a total of six months' delinquent sewer service charges without the necessity of any writing or recording of the lien with the county auditor. E. Alternative Enforcement of Lien - Water Cutoff. As an additional and concurrent method of enforcing the lien authorized by this chapter, the city shall have the right to cut off the water service to the premises to which such sewer service was furnished until all charges are paid, including interest, connection charges and penalties levied under RCW 35.67.190, together with a cutoff fee, as may be established from time to time by resolution of the city council; provided, however, where a sewer lien notice is required to be recorded, water service may only be cut off within two years from the date of recording of the lien notice. F. Water Leaks - Adjustments to Bill. For property owners whose billing is based on water consumption, adjustments in billing charges may be made in the event of increased water -3- 2105 (2012) usage due to leaks in the property owner's system. If a property owner wishes an adjustment in a billing charge due to a water leak, a written request must be submitted to the finance director. The written request shall include the name, address, telephone number and service address, if different than above, of the property owner requesting the adjustment, the date and proof of adequate repair of the leak which may be established by receipt or billing for repair work and/or materials if the repair was accomplished by the property owner. Credit shall be posted to the account on the billing following submittal of proof of repair for a period extending up to 120 days prior to the date of repair, The charge for sewer shall be based on the water consumption history and other factors which, in the determination of the finance director, affect the property owner's water consumption. G. Responsibility of Sewer Charges. Charges for sewer service shall be the responsibility of the property owner. H. NSF Checks. Pursuant to Chapter 62A_3-515 RCW, if a check received in payment for sewer service charges is dishonored by nonacceptance or nonpayment, the city shall charge a reasonable handling fee fixed from time to time by resolution of the city council. If the check is not paid within 15 days after notice of dishonor, sent by certified mail to the last known address of the person responsible therefor, the drawer of said check shall be liable for interest, collection costs and attorneys' fees incurred in collecting the dishonored check. In addition, in the event of a court action on the dishonored check, after notice and the expiration of 15 days, the city shall be entitled to damages in the amount of three times the face value of the check or $300.00, whichever is less, pursuant to Chapter 62A.3-515 RCW. Section 4. Severability. If any section, sub -section, sentence, clause or phrase of this ordinance should be held to be invalid or unconstitutional by a court of competent jurisdiction, such invalidity or unconstitutionality shall not affect the validity of constitutionality of any other section, sub -section, sentence, clause or phrase of this ordinance. Section 5. Savings. The enactments of this ordinance shall not affect any case, proceeding, appeal or other matter currently pending in any court or in any way modify any right or liability, civil or criminal, which may be in existence on the effective date of this ordinance. Section 6. This ordinance, being an exercise of a power specifically delegated to the City legislative body, is not subject to referendum, and shall take effect January 1, 2013, which is not less than five (5) days after passage and publication of the ordinance or a summary thereof consisting of the title. Section 7. Corrections. The City Clerk and the codifiers of this ordinance are authorized to make necessary corrections to this ordinance including, but not limited to, the correction of scrivener's/clerical errors, references, ordinance numbering, section/subsection numbers and any references thereto. -4- 2105 (2012) l� u APPROVED: --.- " d� MAR LAMB MAYOR ATTEST/AUTHENTICATED: JOANNETRUDEL CITY CLERK APPROVED AS TO FORM: OSEPH N. BECK CITY ATTORNEY FILED WITH THE CITY CLERK: November 6, 2012 PASSED BY THE CITY COUNCIL November 13.2012 PUBLISHED: November 19,201 EFFECTIVE DATE: November24, 2012 ORDINANCE NO.: 2105 2012 • -5- 2105 (2012) SUMMARY OF ORDINANCE NO. 2105 (2012) City of Bothell, Washington On the 13`h day of November, 2012, the City Council of the City of Bothell passed Ordinance No. 2105 (20121. A summary of the content of said Ordinance, consisting of the title, is provided as follows: AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, ESTABLISHING NEW USER RATES FOR CLASS II, CLASS III, CLASS IV, AND CLASS V SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL; AND AMENDING SECTIONS 18.03.210, 18.03.220 and 18.03.280 OF THE BOTHELL MUNICIPAL CODE The full text of this Ordinance will be mailed upon request. JO NNE TRU EL CITY CLERK FILED WITH THE CITY CLERK: November 6, 2012 PASSED BY THE CITY COUNCIL: November 13. 2012 PUBLISHED: November 19, 2012 EFFECTIVE DATE: November 24, 2012 ORDINANCE NO.: 2105 (2012) -& 2105 (2012) • • c�he�eatile�imes City Of Bothell City Clerk 18305 101 st Ave NE Bothell, WA 98011 Re: Advertiser Account # 109301 Ad M 260923 Affidavit of Publication STATE OF WASHINGTON. Counties of King and Snohomish The undersigned, on oath states that he/she is an authorized representative of The Seattle Times Company, . publisher of The Seattle Times of general circulation published daily in King and Snohomish Counties, State of Washington. The Seattle Times has been approved as a legal newspaper by others of the Superior Court of King and Snohomish Counties. The notice, in the exact form annexed, was published in the regular and entire issue of said paper or papers'and distrib- uted to its subscribers during all of the said period. Newspaper and Publication Date(s) Seattle Times 11/19/12 Agents ,y E t)JSignature I ' l Clu/t,w i,C- -VV kx� '41 =�� ter` e'a" �<p�4, ''Subscribed and sworn to before me on Al., /%• otarrr `°�' DATE Christina C. McKenna �Ty�+++{1 aj:Nj` Public in and for tl- StWof Washington, residing at Seattle OF ��' c"�C. tteSeattle(�imes Re: Advertiser Account # 109301 Ad #: 260423 TEXT OF ORDINANCE NO. 2105 (2012) AD TEXT City of Bothell, Washington On the 13th day of November, 2012,the City Council of the Clty of Bothell passed Ordinance No. 2105 (2012). A summary of the content of said Ordinance, consisting of the title, Is provided os follows: AN ORDINANCE OF THE CITY OF BOTHELL, WASHINGTON, ESTABLISH- ING NEW USER RATES FOR CLASS II, CLASS III, CLASS IV, AND CLASS V SANITARY SEWER SERVICES WITHIN AND WITHOUT THE CITY LIMITS OF THE CITY OF BOTHELL;AND AMEND, ING SECTIONS 18.03.210, 18.03.220 and 18.03.280 OF THE BOTHELL MUNICIPAL CODE The full text of this Orcinance will be mailed uvon request. /s/ JoAnne Trudel JOANNE TRUDEL CITY CLERK FILED WITH THE CITY CLERK: Nave mbar 6, 2012 PASSED BY THE CITY COUNCIL: November 13, 2012 PUBLISHED: November 19, 2012 EFFECTIVE DATE! November 24, 2012 ORDINANCE NO.: 2105 (2012) RESOLUTION NO. 1370 (2017) A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON, ESTABLISHING THE 2018 FEE SCHEDULE AND RESCINDING RESOLUTION NO. 1354 (2016). WHEREAS, the City Council finds that the following fee schedule sets forth fees that are reasonable and necessary for the year 2018. NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF BOTHELL, WASHINGTON, DOES RESOLVE AS FOLLOWS: Section 1. Effective January 1, 2018, the schedule of fees set forth herein is hereby adopted, superceding the 2017 Fee Schedule as originally adopted: PUBLIC RECORDS 1. Inspection of records 2. Records - printed 3. Records - scanned into electronic format 4. Records provided by electronic delivery 5. Electronic records transmission 6. Storage media, postage/delivery charges envelopes 7. Scanning and placing documents onto CD/DVD 8. Police audio/video on CD/DVD CITY CLERK DIVISION A4 d- 2017 Fee 2018 Fee No Fee No Fee $0.15/page $0.15/page n/a $0.10/page n/a $0.05 for 4 files n/a $0.10/gigabyte n/a Actual Cost 8 CD 11 DVD 2.65 17.00 $5.00 30.00 60.00 Initial fee $15.00 Renewal fee $0 0.00 5.00 3.00 15.00 15.00 250.00 100.00 section Page 1 of 24 1370 (2017) Ootional/additional fees Canopy and chairs n/a 104.00 Sump pump usage (if needed) n/a 83.00 Burials on Sunday or City holiday n/a $200+ (if required by King County Health Department) applicable tax a: Fu,; size spaGe 674.00 n/a Quarter size space 230.00 n/a Ix. Burma! ser,, ;Ges Standard Cost plus 100.00 n/a UM Cost plus 100.00 n/a H-eadstone Cost plus 100.00 n/a \��aF,ts/line;& (required fer regular burials optional for burial Of Cost plus 100.00 n/a rrom-,4orJ remains) Rental Of GaRGpY (OptiOR-]% Cost plus 100.00 n/a nniSGeli ,nec) c n atom sery Gape hanger G Gess (+Tt+nerlarlda�.p� changes, unique marker sett i nnc etG ) 3 hours or joss Cost plus 50.00 n/a 4 heurs or more Cost plus 100.00 n/a 2-. DVI) GOpieS Of RqeetiRgS, r DVD 11.00 See Public 3, PubliGatiGrl request OR CID 8.00 Records 2. Special events permits: a. 75 or more participants 167.00 173.00 b. Block party 20.00 21.00 Page 2 of 24 1370 (2017) 2017 Fee 2018 Fee 1. Cemetery charges and fees Costs are estimates only. Deposit required prior to service. Exact costs will be calculated at conclusion and invoice (or refund) issued. 72 hours notice required. Interment/memorial fees Full-size burial n/a 1,109.00 Casket liner/grave box/vault n/a 53.00 (Required for full-size burial. Concrete vaults available upon request.) Urn burial - small n/a 449.00 Urn burial - large n/a 504.00 Urn liner n/a 21.00 Memorial settings: Single flush marker n/a 374.00 Double flush marker n/a 396.00 Upright marker (2 or more pieces) n/a 567.00 Ootional/additional fees Canopy and chairs n/a 104.00 Sump pump usage (if needed) n/a 83.00 Burials on Sunday or City holiday n/a $200+ (if required by King County Health Department) applicable tax a: Fu,; size spaGe 674.00 n/a Quarter size space 230.00 n/a Ix. Burma! ser,, ;Ges Standard Cost plus 100.00 n/a UM Cost plus 100.00 n/a H-eadstone Cost plus 100.00 n/a \��aF,ts/line;& (required fer regular burials optional for burial Of Cost plus 100.00 n/a rrom-,4orJ remains) Rental Of GaRGpY (OptiOR-]% Cost plus 100.00 n/a nniSGeli ,nec) c n atom sery Gape hanger G Gess (+Tt+nerlarlda�.p� changes, unique marker sett i nnc etG ) 3 hours or joss Cost plus 50.00 n/a 4 heurs or more Cost plus 100.00 n/a 2-. DVI) GOpieS Of RqeetiRgS, r DVD 11.00 See Public 3, PubliGatiGrl request OR CID 8.00 Records 2. Special events permits: a. 75 or more participants 167.00 173.00 b. Block party 20.00 21.00 Page 2 of 24 1370 (2017) 2017 Fee FINANCE DEPARTMENT 1. Non -sufficient funds (NSF) check handling fee 38.00 2. Utility account fees and late charges a. Late fee penalty 11.00 b. Collection agency assignment fee 38.00 c. Customer request water shut-off or turn -on fee 30.00 d. Non-payment water shut-off fee 55.00 e. Non-payment water turn -on fee 55.00 f. Meter tampering administrative fee, in cases of meter tampering or water theft. Cumulative to any fines, penalties, water charges, or 349.00 other fees and costs. g. Meter re -reads (One re -read per year at no charge) 36.00 h. Final meter reads 36.00 i. Utility lien filing administrative fee, in addition to County recording costs 46.00 j. After hours water service reactivation charge for delinquent accounts 87.00 3- Credit Gard transaction foo 3% 3. Animal license fees a. Altered dog or cat annual license b. Unaltered dog or cat annual license c. Senior (65 & over) life of altered pet d. Service animal, altered pets only (with statement owner is disabled & animal is used as service animal) e. Replacement tag f. Transfer fee g_ Late fee h. Juvenile animal license (8 wks - 6 mos) i. Dangerous dog registration fee L Hobby kennel/cattery - application fee POLICE DEPARTMENT 1. Fingerprinting a. First card - residents b. Each additional card - residents c. First card - nonresidents d. Each additional card - nonresidents 15.00 5.00 20.00 10.00 2018 Fee 40.00 12.00 40.00 31.00 57.00 57.00 360.00 38.00 38.00 48.00 90.00 n/a 30.00 60.00 Initial fee $15 Renewal fee $0 0.00 5.00 3.00 15.00 15.00 250.00 100.00 15.00 5.00 20.00 10.00 Page 3 of 24 1370(2017) 2017 Fee 2018 Fee 2. Case reports or miscellaneous reports a. 5 pages or less 4.00 4.00 b. 6 pages or more 4.00 Plus 4.00 Plus 0.15/page 0.15/page See Public Photos on CD 7.00 Records section 3. Accident reports a. 5 pages or less 4.00 4.00 b. 6 pages or more 4.00 plus 4.00 plus 0.15/page 0.15/page See Public G-. Photos on CD 7.00 Records section 47 Audio and v0deo FeGGFdings 17.00 17.00 4. False alarms a. First response No Charge No Charge b. Second response within six months of first alarm 50.00 50.00 c. Third response within six months of first response 75.00 75.00 d. Fourth or higher response within six months of first response 100.00 100.00 5. Concealed pistol license a. Original As set by WA As set by WA 185.00 State DOL State DOL b. Renewal As set by WA As set by WA Emergency veterinary care State DOL State DOL c. Late renewal As set by WA As set by WA Actual Cost State DOL State DOL d. Replacements As set by WA As set by WA dangerous dog declaration State DOL State DOL 6. Clearance letter (notarized) 10.00 10.00 7. Animal control fees a. Shelter intake fee 185.00 185.00 b. Daily holding/kennel fee 25.00 25.00 c. Emergency veterinary care Actual Cost Actual Cost d. Euthanasia and animal disposal Actual Cost Actual Cost e. Hearing examiner costs associated with unsuccessful appeal of Actual Cost Actual Cost dangerous dog declaration Page 4 of 24 1370 (2017) 2017 Fee 2018 Fee FIRE DEPARTMENT 1. Bothell Municipal Code Fire Fees False alarms a. First non-exempt preventable alarm 155.00 160.00 b. Subsequent non-exempt preventable alarm 195.00 201.00 Fireworks a. Retail seller permit 100.00 100.00 Plus cash bond 100.00 100.00 b. Public display permit 100.00 100.00 Plus cash bond 100.00 100.00 2. Development Review Fees Building plan review fee, per square foot of gross building floor area 0.07 0.08 Land use reviews (Fire land -use review being added to Development Review fee structure, with associated billable hourly rates) Hourly rate - See Hourly rate - See 5 acres or less Dev Review Fee Dev Review Fee Over 5 acres Hazardous Materials Review 3. IFC Operational Permits 105.6.1 - 46 Aerosol products Amusement buildings Aviation facilities Carnivals and fairs: Commercial Non-profit Cellulose nitrate film Combustible fibers Compressed gases Covered mall buildings Cryogenic fluids Cutting and welding Distributed antenna system Dry cleaning plants Dust producing operations Exhibits and trade shows Explosives Fire hydrants and valves Flammable and combustible liquids Floor finishing Fruit and crop ripening Fumigation or thermal insecticidal fogging Peer review fee Peer review fee 218.00 225.00 177.00 183.00 212.00 219.00 314.00 324.00 156.00 161.00 122.00 126.00 122.00 126.00 155.00 160.00 212.00 219.00 155.00 160.00 177.00 183.00 177.00 183.00 155.00 160.00 177.00 183.00 177.00 183.00 314.00 324.00 177.00 183.00 308.00 318.00 177.00 183.00 212.00 219.00 212.00 219.00 Page 5 of 24 1370 (2017) 4. IFC Construction Permits 105.7.1 - 14* 'For all permits plan reviews revisions reinspection fees and other inspections a 5% Technology surcharge fee is applied to the total fee for services. Automatic Fire Protection Systems Automatic fire -extinguishing systems. Fire sprinkler NFPA 13, 13D, and 13R. a. New commerical buildings NFPA 13, fee per riser (plus $1.00 per 2017 Fee 2018 Fee Hazardous materials 457.00 471.00 Hazardous production materials 177.00 183.00 High -piled storage 392.00 404.00 Hot work operations 177.00 183.00 Industrial ovens 155.00 160.00 Liquid/gas fueled vehicles/equipment in assembly building 122.00 126.00 Liquified petroleum gases 155.00 160.00 Lumber yards and woodworking plants 141.00 146.00 Magnesium 155.00 160.00 Miscellaneous combustible storage 122.00 126.00 Open flames and candles 95.00 98.00 Open flames and torches 177.00 183.00 Organic coatings 212.00 219.00 Places of assembly Non -Profit 181.00 187.00 Places of assembly - Commercial 212.00 219.00 Positive alarm sequence fire alarm 177.00 183.00 Private fire hydrants 177.00 183.00 Pyrotechnical special effects material 281.00 290.00 Pyroxlin plastics 177.00 183.00 Refrigeration equipment 212.00 219.00 Repair garages and motor fuel -dispensing facilities 141.00 146.00 Rooftop heliports 177.00 183.00 Spraying or dipping 212.00 219.00 Temporary membrane structures and tents: a. Commercial 181.00 187.00 b. Non-profit 155.00 160.00 Tires: Rebuilding plants, storage of scrap and by-products 204.00 211.00 Waste handling 177.00 183.00 Wood products 177.00 183.00 4. IFC Construction Permits 105.7.1 - 14* 'For all permits plan reviews revisions reinspection fees and other inspections a 5% Technology surcharge fee is applied to the total fee for services. Automatic Fire Protection Systems Automatic fire -extinguishing systems. Fire sprinkler NFPA 13, 13D, and 13R. a. New commerical buildings NFPA 13, fee per riser (plus $1.00 per 308.00 613.00 sprinkler head) b. Commerical tenant improvements NFPA 13, fee per riser (plus $1.00 177.00 526.00 per sprinkler head) c. Single and multi -family residential NDPA 13D and 13R 166.00 397.00 d. Underground fire sprinkler supply line 177.00 80.00 e. Commerical kitchen hood and duct systems 265.00 80.00 f. VESDA/FM-200 fire suppression systems 349.00 742.00 f� Addit'nn-.I foo per ReZZle g New mixed-use buildings NFPA 13 fee per riser (plus $1.00 per n/a 613.00 sprinkler head) Page 6 of 24 1370(2017) Review Fee Review Fee Stop Work Order Fee 87.00 90.00 Inspections fees - phase project inspection fee n/a 137.00 Fire Code construction permit re -inspection fee. (Billed for each 68.00 137.00 inspection occurrence after primary inspection and first re -inspection.) Page 7 of 24 1370 (2017) 2017 Fee 2018 Fee Battery systems 233.00 224.00 Compressed gases 155.00 353.00 Cryogenic fluids 155.00 353.00 Automatic Fire Detection Systems Fire alarm/detection systems and related equipment. NFPA 10 fire alarm and signaling systems. a. Fire alarm panels, 1-4 zones, plus $1.50/device 181.00 742.00 b. Fire alarm panels, 5 or more zones, plus $1.50/device 233.00 1,001.00 c. Addressable control panels, plus $1.00/device 308.00 742.00 d. Fire alarm transmission devices 181.00 224.00 Other Systems Industrial ovens 155.00 310.00 Liquified petroleum gas 155.00 310.00 Private fire hydrants 295.00 224.00 Spraying and dipping 212.00 483.00 Standpipe systems 181.00 397.00 Distributed antenna system 177.00 397.00 Fire pumps and related equipment 181.00 224.00 Flammable and combustible liquids storage and transport Level 1: Less than 1000 gallon capacity 189.00 224.00 Level 2: 1000+ gallon capacity 335.00 483.00 Hazardous Materials Processing Systems Peer review fee Peer review fee Temporary membrane structures and tents: a. Commercial 181.00 267.00 b. Non-profit 155.00 267.00 5. Inspection Fees After-hours inspections (billed half-hourly) Hourly rate - Hourly rate - See Dev See Dev Review Fee Review Fee Stop Work Order Fee 87.00 90.00 Inspections fees - phase project inspection fee n/a 137.00 Fire Code construction permit re -inspection fee. (Billed for each 68.00 137.00 inspection occurrence after primary inspection and first re -inspection.) Page 7 of 24 1370 (2017) 2017 Fee 2018 Fee 6. Response Operations Section Fees Fees for Non -Public Records Act Requests Fire incident/investigation reports 15.00 15.00 Medical incident reports 15.00 15.00 550.00 or 550.00 or EMS transport fee Medicare Medicare Allowable Rate Allowable Rate Transport mileage fee 14.00 per mile 14.00 per mile Motor Vehicle Collision (MVC) and Vehicle Fire recovery fees Level One Response 466.00 480.00 Level Two Response 589.00 607.00 Level Three Response 748.00 771.00 Level Four Response 1,403.00 1,446.00 7. CRR - Public Education Fees CPR class fees - Organizations requesting required CPR training. Class size limited to 8. a. Adult and child CPR w/AED 331.00 341.00 b. Healthcare provider CPR 331.00 341.00 c. First aid 335.00 346.00 CPR class fees - Scheduled classes open to all individuals for enrollment. (Resident charge applies to all Snohomish County District 10 residents) a. Adult, child, & infant CPR/AED - Resident 46.00 48.00 b. Adult, child, & infant CPR/AED - Nonresident 56.00 58.00 c. First aid - Resident 46.00 48.00 d. First aid - Nonresident 56.00 58.00 Public Education safety classes a. Mock impaired driving demonstration 800.00 800.00 b. CERT (Community Emergency Response Team) - -Scheduled classes 50.00 50.00 open to individuals for enrollment. c. Safe Sitter class 25.00 25.00 Instructor Hourly Instructor d. Search & Rescue Rate Hourly Rate Instructor Hourly Instructor e. Triage Rate Hourly Rate Instructor Hourly Instructor f. ICS/NIMS Rate Hourly Rate Instructor Hourly Instructor g. Other safety classes Rate Hourly Rate Bicycle Helmets (per helmet fee) 10.00 10.00 Page 8 of 24 1370 (2017) 2017 Fee 2018 Fee COMMUNITY DEVELOPMENT PLANNING 1. Administrative final plat n/a 4,717.00 2. ADU n/a 715.00 3. Annexation - Type V n/a Hourly 4. Appeals 1,530.00 1,576.00 5. Bothell Municipal Code amendments 4,523.00 Hourly 6. Boundary line adjustment - Tvpe I n/a 904.00 7. Comprehensive plan amendments (property specific) 4,523.00 Hourly Fee applies during aRRU@l updates. 0 8. update Conditional use - Tvpe III n/a 6,232.00 9. Critical areas alteration - Tvpe II n/a 3,372.00 10. Demolition fee - accessory structure n/a 131.00 11. Demolition fee - historic structure n/a Hourly 12. Demolition fee - main structure n/a 321.00 13. Demolition - historic inventory n/a Hourly 14. Director's interpretation n/a 2,657.00 15. Final plat n/a 5,608.00 16. Final plat - additional per lot (after 5) n/a 342.00 17. Final short plat n/a 3,626.00 18. First pre-application meeting (for actions initiated by single -family homeowners) 693.00 700.00 19. First pre-application meeting 1,380.00 1,545.00 All subsequent pre-application meetings project review, and any additional staff time spent on processing a development applicant's proposal prior to and following submittal of a formal land use or building permit application shall be billed monthly at the applicable staff hourly rate, including benefits and overhead. 20. First-time tenant improvements n/a 218.00 21. Personal wireless - Tvpe I n/a 1,067.00 22. Personal wireless - Type II n/a 1,731.00 23. Planned unit development - final without plat n/a 2,153.00 24. Planned unit development - preliminary without plat n/a 6,869.00 25. Preliminary plat n/a 12,747.00 26. Preliminary plat - additional per lot (after 51 n/a 519.00 27. Preliminary short plat n/a 6,849.00 28. PUD - major mod n/a 4,368.00 29. PUD - minor mod n/a 715.00 30. Request for extension of construction noise hours 158.00 163.00 31. SEPA n/a 957.00 32. Shoreline conditional use n/a 7,024.00 33. Shoreline substantial development n/a 6,868.00 34. Shoreline exemption n/a 1,711.00 35. Shoreline variance n/a 7,024.00 36. Sign permits - first sign 149.00 622.00 37. Sign permits - additional 26.00 181.00 Page 9 of 24 1370 2( 017) 2017 Fee 2018 Fee 38. Site rezone application fee HourlV Hourly An applicant shall pay for all work done by, or on behalf of, the City in connection with the processing and review of the application, including public hearing presentations and hearing body findings, conclusions and decisions. (@S SpeGif ed in Devel ,.,m8Rt Review Goo section) The Applicant shall be invoiced for actual costs by the Community Development and Public Works staff to provide for reimbursement of municipal employee time. The charges will be based on the applicable staff hourly rate of the employee performing the review, including benefits and overhead. At the request of the applicant, overtime may be authorized for plan review and/or inspections performed outside of normal working hour and will be charged at the applicable staff overtime hourly rate, including benefits and overhead. Payments shall be paid to the City upon demand. Maintenance bonds will not be released until all fees are paid in full. The applicant shall be responsible for the cost of legal counsel review, hearing examiner review, all recording fees associated with final plats, binding site plans and all other development documents requiring recording, consultants, and any additional required studies, and for reimbursement of municipal employee time. 39. Sub - malor mod n/a 4,368.00 40. Sub - minor mod n/a 715.00 41. Sub - vacate n/a 4,368.00 42. Transitory accomodation review n/a 2,707.00 43. Variance - Type III n/a 3,703.00 44. Zoning confirmation %quest letter 158.00 218.00 Custom map requests For custam requests requ+ring ptettjRg, a fee of $6"0 per Maur with a 45 n RUte m4nim-um ($15�99); plus reimbur-sement for supplies as follows: CD ROM - reGGFdabie- n/a n/a 11 " x 17" paW 4.00 See 06"-m , er- neat400t 5.00 Miscellaneous DVD reGGrdable 1.00 fees section BUSINESS LICENSES Business license fee (total of a, b, and c) a. Number of employees: 0-2 28.00 29.00 3-10 74.00 77.00 11-25 156.00 161.00 26-50 335.00 346.00 51-75 505.00 521.00 76-100 674.00 695.00 100+ 674.00 695.00 Additional fee for each employee over 100 11.00 12.00 Transfer to new location 28.00 29.00 Transfer to new owner 28.00 29.00 Duplicate License 8.00 9.00 Page 10 of 24 1370 (2017) Page 11 of 24 1370 (2017) 2017 Fee 2018 Fee b. Type of business: Contractors 37.00 39.00 Public assembly 72.00 75.00 Educational 72.00 75.00 Institutional 72.00 75.00 Residential 54.00 56.00 Store, office 37.00 39.00 Basic industry/utility 89.00 92.00 Manufacturing 89.00 92.00 Storage 72.00 75.00 Special properties 72.00 75.00 Apartments 280.00 289.00 c. Occupancy size for businesses (square feet) Less than 3,000 0.00 0.00 3,001-5,000 56.00 58.00 5,001-10,000 87.00 90.00 10,001-15,000 1,371.00 1,413.00 15,001-17,000 1,887.00 1,944.00 17,001-20,000 2,117.00 2,181.00 20,001-50,000 2,555.00 2,632.00 Greater than 50,000 4,439.00 4,573.00 d. Occupancy size for apartment buildings (square feet) Less than 3,000 0.00 0.00 3,001-5,000 56.00 58.00 5,001-10,000 87.00 90.00 10,001-15,000 1,371.00 1,413.00 15,001-17,000 1,887.00 1,944.00 17,001-20,000 2,117.00 2,181.00 20,001-50,000 2,555.00 2,632.00 Greater than 50,000 2,960.00 3,049.00 2. Adult entertainment facilities a. Adult entertainment facility license, per year, plus business license fee 3,094.00 3,187.00 b. Manager license, per year 775.00 799.00 c. Entertainer license, per year 775.00 799.00 3. Public/teen dance, per year 513.00 529.00 4. Amusement game device, per game, per year 47.00 49.00 5. Pawnbrokers, per year 173.00 179.00 6. Secondhand dealers, per year 47.00 49.00 7. Family day care homes, per year 19.00 20.00 Page 11 of 24 1370 (2017) 2017 Fee 2018 Fee BUILDING/CODE ENFORCEMENT Table 20.02.155 B - OTHER FEES (Building, Plumbing, and Mechanical Permits)3 1. Inspections outside of normal business hours (per hour)3 n/a 156.51 2. Reinspection fee 3 4 n/a 156.51 3. Inspection for which no fee is specifically indicated (per hour)3 n/a 156.51 4. Additional plan review required by changes additions, and/or revisions n/a 156.51 (per hour)3 5. Re -roof (single family residence)3 n/a 120.00 6. Use of outside consultants for plan checking or inspections: Actual n/a Hourly costs13 7. Mobile home replacement/installation3 n/a 280.00 8. Moved building (pre -move inspection )3 n/a 250.00 Actual costs include fees for consultant services plus administrative and overhead costs. 2Plan review fee includes the initital plan review and two re -reviews. Anv subsequent reviews after the third review will result in a $156.51/hour charge for additional review services. 3For all permits plan reviews revisions reinspection fees and other inspections a 5% Technology surcharge is applied to the total fee for services. ``Inspection services include one initial inspection for each type of inspection and/or area to be inspected (if inspected in phases/sections) and one reinspection to address items requiring correction during the initial inspection If items are not completed at the reinspection the inspector may issue a reinspection fee for any subsquent inspections necessary to address the remaining items The inspector may also issue a reinspection fee if a prosect has requested an inspection and is not ready at the time of insoection. In instances where reinspection fees have been assessed, no additonal inspection of the work shall be provided by the City until the required fees are paid Plumbing and Mechanical Permit Fees (Multi -Family, Mixed -Use, and Non -Residential) 1. Permit fee - see valuation table below to determine plumbing and/or mechanical permit fee due at issuance. 2. Plan review fee - when plans are required to be submitted for review, a plan review fee equal to 40% of the mechanical permit fee shall be paid at the time of submittal. 3. Technology fee - a 5% fee will be added for all permit and plan review related services. 4. Miscellaneous inspection and other fees - see table under Building Permit Fees. The valuation table below applies to all multi -family, mixed-use and non-residential plumbing and mechanical permits unless otherwise noted. Fees listed are in addition to plan review, Washington state surcharges 5% technology fee and any other applicable stop work order/special investigation fees. Total Valuation $0 - $1,000* Up to $1,000 n/a 65.00 $1,001 - $2,000* For the first $1,000 n/a 68.00 Per additional $100 or portion up to $2,000 n/a 5.00 $2,001 - $25,000* For the first $2,000 n/a 125.00 Page 12 of 24 1370 (2017) "For multi-level buildings over 2 stories add $30/unit for each dwelling unit above the 2nd story (does not include townhouses and detached single family units on one lot which are charged using the percentage of building permit fee for new single family construction. Residential Plumbing and Mechanical (New Construction): 8% of Building Permit Fee Residential Mechanical Fees - Alterations/Additions/Replacements Base permit fee n/a 55.00 Gas piping (per outlet) 2017 Fee 2018 Fee Per additional $1,000 or portion, up to $25,000 n/a 19.00 $25,001 - $50,000* n/a 30.00 For the first $25,000 n/a 20.00 Heating equipment - including ductwork (per fixture) n/a 515.00 Per additional $1,000 or portion up to $50,000 n/a 14.00 $50,001 - $100,000* n/a 20.00 Ductwork system remodels (per zone) n/a 20.00 For the first $50,000 n/a 30.00 Other (per item) n/a 815.00 Per additional $1,000 or portion, up to $100,000 n/a 13.00 $100,001 - $500,000* For the first $100,000 n/a 1,275.00 Per additional $1,000 or portion, up to $500,000 n/a 11.00 $500,001 - $1,000,000* For the first $500,000 n/a 4,175.00 Per additional $1,000 or portion up to $1,000,000 n/a 7.00 $1,000,001 - $5,000,000* For the first $1,000,000 n/a 7,300.00 Per additional $1,000 or portion up to $5 000 000 n/a 5.00 $5,000,001 and up* For the first $5,000,000 n/a 23,125.00 Per additional $1,000 n/a 4.00 "For multi-level buildings over 2 stories add $30/unit for each dwelling unit above the 2nd story (does not include townhouses and detached single family units on one lot which are charged using the percentage of building permit fee for new single family construction. Residential Plumbing and Mechanical (New Construction): 8% of Building Permit Fee Residential Mechanical Fees - Alterations/Additions/Replacements Base permit fee n/a 55.00 Gas piping (per outlet) n/a 10.00 Hydronic piping (per outlet) n/a 10.00 Gas water heaters (per fixture) n/a 20.00 Solid fuel burning appliances - wood/pellet stoves/inserts (per fixture) n/a 30.00 Gas log inserts (per fixture) n/a 20.00 Heating equipment - including ductwork (per fixture) n/a 30.00 Vent/exhaust fans (per fixture) n/a 20.00 Ventilation systems - not part of heating or A/C systems (per fixture) n/a 20.00 Ductwork system remodels (per zone) n/a 20.00 Compressors, air conditioners, & heat pumps (per fixture) n/a 30.00 Other (per item) n/a 20.00 Residential Plumbing Fees - Alterations/Additions/Replacements Base permit fee n/a 55.00 Backflow preventers & vacuum breakers (per fixture) n/a 15.00 Kitchen sinks (per fixture) n/a 15.00 Dishwashers (per fixture) n/a 15.00 Electric water heaters (per fixture) n/a 15.00 Clothes washers (per fixture) n/a 15.00 Page 13 of 24 1370 (2017) Other Fees 1. Building moving - through City 223.00 minimum charge or actual cost, whichever is greater 2. Building moving - into or within City 2017 Fee 2018 Fee Lavatories/bathroom sinks (per fixture) n/a 15.00 Water closets/toilets (per fixture) n/a 15.00 Bathtubs (per fixture) n/a 15.00 Showers/valve replacements (per fixture) n/a 15.00 Floor drains (per fixture) n/a 15.00 Water softeners (per fixture) n/a 15.00 Sewage electors (per fixture) n/a 15.00 Laundry trays & utility sinks (per fixture) n/a 15.00 Bar sinks (per fixture) n/a 15.00 Drinking fountains (per fixture) n/a 15.00 Urinals (per fixture) n/a 15.00 Backwater valves (per fixture) n/a 15.00 Miscellaneous plumbing (per fixture) n/a 15.00 Repair/replacement of water piping (per fixture) n/a 25.00 Water line (meter to house) n/a 50.00 Other Fees 1. Building moving - through City 223.00 minimum charge or actual cost, whichever is greater 2. Building moving - into or within City Permit fee 38.00 40.00 Pre -move inspection fee of 112 or actual cost, whichever is greater 3. Plan reviews and inspections to ensure compliance with the Washington State Energy Code: Per single family dwelling 152.00 157.00 Per residential remodel/addition 152.00 157.00 Per multi -family structure 302.00 312.00 Additional per unit fee 79.00 82.00 Per commercial building 302.00 312.00 Per tenant improvement 152.00 157.00 4. Code enforcement violations a. Hearing Examiner - Actual charge to City for services b. City staff time at hearing - Actual cost based on applicable staff hourly rate, including benefits and overhead. c. City Attorney - Actual charge based on hourly rate of pay for City Attorney, including benefits and overhead. d. Administrative Fee 155.00 160.00 5. Demolition Fee a. Main Structure 318.00 328.00 b. Accessory Structure 55.00 57.00 c. Historic Structure 317.00+ 327.00+ Dev Review Fee Dev Review Fee Page 14 of 24 1370 (2017) 2017 Fee 2018 Fee PUBLIC WORKS, COMMUNITY DEVELOPMENT, & FIRE DEVELOPMENT REVIEW, PERMIT FEES AND CHARGES Development Review Fee Following a third review or for permits subject to hourly review fees an applicant shall pay for all work done by, or on behalf of, the City in connection with the processing, reviewing, checking, computing, and inspecting and correcting for compliance with City codes of the plans or other documents provided by the applicant and for plan checking, land use evaluations, inspection and testing for all public and private infrastructure improvement including water lines, sanitary sewer lines, storm water retention/detention and drainage systems, streets, curbs, gutters and sidewalks, parking, landscaping, building heights & setbacks, signage, verification of conditions of approval and performing concurrency evaluations, impact fee assessments, and all non-SEPA traffic evaluations in conjunction with a land use, building, or construction application. Individual single family residences exempt from SEPA review are not required to pay a Development Review fee. The applicant shall be invoiced for actual costs on a monthly basis. Payment is due to the City upon demand. The Development Review fees provide for reimbursement of municipal employee time. The charges will be based on the applicable staff billing rate of the employee performing the review, including benefits and overhead and out of pocket expenses such as outside consultant peer review, specialized subconsultants, printing expenses, and other related costs. Billing will occur on a monthly basis. At the request of the applicant overtime may be authorized for plan review and or inspections performed outside of normal working hours and will be charged at the applicable staff overtime hourly rate (time and a half), including benefits and overhead. Maintenance bonds will not be released until all fees are paid in full. The applicant shall be responsible for the cost of legal counsel review, hearing examiner review, all recording fees associated with final plats, binding site plans and all other development documents requiring recording, consultants, and any additional required studies, and for reimbursement of municipal employee time at their current billable hourly rate. Development Review Technology Surcharge In order to reimburse the City for costs specifically related to the maintenance and regular upgrading of local and regional electronic development review and tracking systems, which benefit the City's development customers via an increasingly efficient and effective review process, a five percent technology surcharge will be added to pre -application conference fees; plan review fees; permit fees; and development review fees. The technology surcharge will not be placed on facilities charges or impact fees. PUBLIC WORKS WATER FEES & CHARGES Water main facility charges 3/4" (5/8") meter 4,524.00 4,660.00 1" meter 9,835.00 10,131.00 1.5" meter 22,901.00 23,589.00 2" meter 35,344.00 36,405.00 3" meter 75,951.00 78,230.00 4" meter 115,711.00 119,183.00 6" meter 234,931.00 241,979.00 Page 15 of 24 1370 (2017) 2017 Fee 2018 Fee 8" meter 381,505.00 392,951.00 2. Fire hydrant use Permit (per calendar year) 117.00 121.00 Hydrant use deposit 1,020.00 1,000.00 City hydrant meter (make-up) damage deposit 1,530.00 1,500.00 Hydrant meter (make-up) rental/per month 110.00 114.00 Water/per 100 cubic feet 12.00 13.00 3. Water meters a. Water meter processing fee, per meter 36.00 38.00 b. Existing service line to property and meter box 3/4" 438.00 452.00 1.1 498.00 513.00 1 1/2" 745.00 768.00 2" 914.00 942.00 c. Complete water service (no existing service to property). At the discretion of the Public Works Director, City crew provides main water tap, brings service to property, and provides and installs meter box and meter. 3/4" short side 5,197.00 5,353.00 3/4" long side 6,433.00 6,626.00 1" short side 5,321.00 5,481.00 1" long side 5,321.00 5,481.00 4. Water main tap: Not associated with a development project 226.00 233.00 Water main tap: Associated with a development project. $119+ 5' Water main tap fee plus development review fee. Dev Review Fee 610.00 6. Fire flow/hydraulic analysis (plus passthrough consultant fees) 268.00 177.00 7. Flushing/dechlorination/disinfection service (Depending on availability) $156+ 1,009.00 Dev Review Fee 8. Backflow assembly inspection 173.00 n/a 2 inch or smaller n/a 211.00 3 inch or larger n/a 690.00 Fie ser„ e li-e baso charge Residential 9.00 n/a 4"Gearaers4 16.00 n/a 6"GerpmeFG4 21.00 n/a 8" CornrneFGial 26.00 n/a 9. Water utility infrastructure improvements Water utility base charge n/a 488.00 Water utility fee per 100 lineal feet of improvements n/a 1,805.00 Page 16 of 24 1370 (2017) 3. Sewer main tap: not associated with a development project 226.00 690.00 4. Sewer main tap: associated with a development project. $119+ Sewer main tap fee + development review fee Dev Review Fee 1,009.00 5. Television pipeline inspection service (Depending on availability) 6. Re -inspection fee wages/honoflto of o.nnlGyees involved 7. Sewer utility infrastructure improvements Sewer utility base charge Sewer utility fee per 100 lineal feet of improvements STORM DRAIN AND SURFACE WATER 1. Single family storm drain inspection fee 2. Television pipeline inspection service (Depending on availability) 3. Citywide stormwater facility charge 4. Stormwater facility charge - downtown sub -basin area $166 per hour 171 per hour (3 hr minimum) (3 hr minimum) $75.00 or total 160.00 staff cost n/a 488.00 n/a 1,502.00 226.00 233.00 $166 per hour 171 per hour (3 hr minimum) (3 hr minimum) $1,248 per $1,286 per impervious Impervious Surface unit Surface Unit $13,170 per $13,566 per Impervious Impervious Surface Unit Surface Unit Page 17 of 24 1370 (2017) 2017 Fee 2018 Fee SEWER FEES & CHARGES 1. Sewer main facility charges a. Single family 2,855.00 2,941.00 b. Commercial/multi-family (RCE*) 2,855.00 2,941.00 *(Resident customer equivalent, as determined by METRO capacity form) 2. Side sewer connections Side sewer processing fee 35.00 51.00 Single family side sewer 336.00 240.00 Detached multi -family side sewer connection n/a 240.00 Commercial/multi-family side sewer connection (1st unit/bldg) associated w/development project. $119+ 610.00 Side connection fee + development review fee Dev Review Fee Additional per unit charge per building 28.00 451.00 Repair/modify side sewer existing line(s) 336.00 240.00 Repair/modify commercial/multi-family side sewer connection n/a Hourly 3. Sewer main tap: not associated with a development project 226.00 690.00 4. Sewer main tap: associated with a development project. $119+ Sewer main tap fee + development review fee Dev Review Fee 1,009.00 5. Television pipeline inspection service (Depending on availability) 6. Re -inspection fee wages/honoflto of o.nnlGyees involved 7. Sewer utility infrastructure improvements Sewer utility base charge Sewer utility fee per 100 lineal feet of improvements STORM DRAIN AND SURFACE WATER 1. Single family storm drain inspection fee 2. Television pipeline inspection service (Depending on availability) 3. Citywide stormwater facility charge 4. Stormwater facility charge - downtown sub -basin area $166 per hour 171 per hour (3 hr minimum) (3 hr minimum) $75.00 or total 160.00 staff cost n/a 488.00 n/a 1,502.00 226.00 233.00 $166 per hour 171 per hour (3 hr minimum) (3 hr minimum) $1,248 per $1,286 per impervious Impervious Surface unit Surface Unit $13,170 per $13,566 per Impervious Impervious Surface Unit Surface Unit Page 17 of 24 1370 (2017) 2017 Fee 2018 Fee 5. Stormwater detention facility (plus pass-through consultant charges) n/a 851.00 6. Stormwater utility infrastructure improvements Stormwater utility base charge n/a 488.00 Stormwater utility fee per 100 lineal feet of improvements n/a 555.00 ROADS & STREETS 1. Driveway approach - right of way invasion permit 459.00 546.00 2. Street excavation, minor - right of way invasion permit 251.00 799.00 3. Street eXGavatiGR,„r r ..h+ of way .,,,as;o. perm + 0_200lineal feet - 448.00 n/a Major franchise base fee n/a 578.00 Right of way franchise - hourly n/a Hourly Add tIGRal per foot Gharge for ever 300 feet 9.00 n/a Streetavation, rot --of way invasiar� �e +t 0-398-4+aeal feed ¢ $248 n/a StFeet eXGava+i + + development �, +oo Dev Review Feea Addit'GRal per foot Gharge for ever 300 feet 9.00 n/a 4. Public utilities blanket permit (per calendar year) 696.00 717.00 5. Publir, utilit+es Right of way lavasien permit, eF site 223.00 n/a Base charge n/a 1,074.00 Right of way per 100 lineal feet n/a 496.00 6. Street vacation application 1,388.00 Hourly Applicant responsible for cost of appraisal & recording fees 7. Purchase and installation of up to two DUI memorial sign(s) 599.00 667.00 8. Accident clean-up / emergency response 209.00 216.00 9. Traffic concurrency base charge n/a 2,161.00 10. Concurrency capacity reporting & monitoring surcharge a. Major development 3,094.00 3,187.00 A "Major development' means any development that generates more than fifty (50) peak hour trips. b. Medium development 1,857.00 1,913.00 A "Medium development' means any development that generates twenty to fifty (20-50) peak hour trips. c. Minor development 931.00 959.00 A "Minor development' means any development that generates at least three (3) peak hour trips, but less than twenty (20) peak hour trips. Page 18 of 24 1370 (2D 17) 2017 Fee 2018 Fee 11. Street cut mitigation fee Street cut mitigation base fee n/a 51.00 "Mitigation fee" (17.08.050). The fee is based upon the cost of overlay for permanent repair of damage/deterioration of streets and shoulders caused by trenching/utility operations. Fee per lineal feet of opening x- 21.00 - overlayy eost. 21.00 22.00 12. Public area use permit application fees Uses with a ess restriGte d to patrons 330.00 n/a Qthor n '+hn + roc+r'nte d aGG866 51.00 n/a Outdoor dining permit fee - sidewalk only n/a No Charge Annual renewal (no substantial changes) n/a 100.00 Railing permit (if applicable) n/a 150.00 Outdoor dining permit fee - flexible zone Applications received on or before March 15 n/a No Charge Applications received after March 15 n/a 750.00 City to move bollards on first Friday of May and last Friday of September each year to minimize cost and disruptions. Annual use charge per square foot (applies to all outdoor dining in the public right of way.) Based on gross square footage - square footage n/a No Charge of clear path. 13. Traffic control devices for public area use permits 162.00 167.00 REVIEW AND INSPECTION FEES 1. Single family site review and inspection 559.00 578.00 Construction and additions. Prior to issuance of building permits, site plans for single family construction are reviewed for consistency with applicable City codes and design and construction standards and specifications, which may include water lines, sanitary sewer lines, storm water retention/detention and drainage systems, streets, curbs, gutters, driveways, sidewalks, and easements. Subsequent to permit issuance, required site inspections are performed. 2. Re -inspection fee 75.00 160.00 Public Works construction permit re -inspection fee. (Billed for each inspection occurrence after primary inspection and first re -inspection.) 3. Re -submittal fee n/a Hourly Page 19 of 24 1 37Q (201 7) 3. Lytle House a. Meeting room Residents (per hour) 67.00 67.00 Non-residents (per hour) 80.00 84.00 b. Site supervisor charge 22.00 23.00 (3 hour minimum rental when site supervisor required) c. Damage deposit 200.00 200.00 Page 20 of 24 1370 (2017 2017 Fee 2018 Fee Public Works construction permit re -submittal review fee. All permits are allowed 3 reviews at fixed fee rates listed.in the fee schedule. 4th review and other additional reviews are to be billed at hourly rate. 4. Rockery/retaining wall (plus pass through consultant costs) n/a 403.00 5. Clearing and grading permit Base charge with or without land use entitlement n/a 1,637.00 Charge per disturbed acre with no land use entitlement n/a 2,060.00 Charge per disturbed acre with land use entitlement n/a 2,227.00 6. Traffic signals New signal (plus pass through County costs n/a 3,439.00 Signal modificaion (plus pass through County costs) n/a 2,384.00 7. "Safe Walk to School' review - residential developments n/a 2,512.00 8. Public Works variance n/a Hourly PARKS AND RECREATION 1. Picnic shelters (per hour) a. Large shelter - 60 or less individuals Residents 38.00 40.00 Non-residents 47.00 50.00 61-75 individuals (must reserve both shelters at Blyth Park): Residents 55.00 57.00 Non-residents 68.00 72.00 b. Small shelter - no more than 15 individuals Residents 18.00 19.00 Non-residents 22.00 24.00 2. Park at Bothell Landing (per hour) Amphitheater Residents 65.00 65.00 Non-residents 97.00 82.00 Use of electricity 22.00 22.00 3. Lytle House a. Meeting room Residents (per hour) 67.00 67.00 Non-residents (per hour) 80.00 84.00 b. Site supervisor charge 22.00 23.00 (3 hour minimum rental when site supervisor required) c. Damage deposit 200.00 200.00 Page 20 of 24 1370 (2017 2017 Fee 2018 Fee d. Damage deposit for reservations with alcohol 400.00 400.00 4. North Creek Schoolhouse a. Meeting room Residents (per hour) 40.00 40.00 Non-residents (per hour) 48.00 50.00 b. Damage deposit 100.00 100.00 Long term use agreements may be negotiated by director at a rate different than above, and may include community service projects. 5. Sportsfields (per hour) a. Adult teams on grass 39.00 41.00 Adult teams on synthetic turf 55.00 57.00 Youth teams on grass 20.00 21.00 Youth teams on synthetic turf 28.00 29.00 b. Tournament events Payment in full and tournament bracket or participant roster must be turned in at least four weeks prior to event. Hourly field rates are shown above. Adult teams 200.00 206.00 Youth teams 100.00 103.00 (Non-refundable deposit applied to the total due) Refundable damage deposit 200.00 200.00 c. Non -prepped sports field Adult teams 33.00 34.00 Youth teams 17.00 17.00 d. Additional field preparation may be provided by the City at the request of the user upon advance payment of estimated labor and materials costs as determined by the Director or designee. 6. North Creek field lights (per hour) 23.00 24.00 7. Commercial use of sportsfields a. Synthetic turf (per hour) 70.00 73.00 b. Grass fields (per hour) 50.00 52.00 8. Commercial photography (per day) 105.00 109.00 9. Concessions a. Ongoing concessions/vendors (Rate negotiable with Director.) 10% of Gross 10% of GrossRevenue Revenue b. Special event/tournament concessions/vendors (per vendor) - applies $28/day or 29/day or to all City properties $52/weekend 54/weekend 10. Other commercial use, per hour (Rate negotiable with Director.) 75.00 78.00 Page 21 of 24 1370 (2017) 2017 Fee 2018 Fee 11. Adult softball leagues Per game rate 62.00 64.00 12. Recreation programs a. Recreation classes - Cancellation fee If class fee is less than $10.00, the cancellation fee is the amount of 10.00 10.00 the class fee. Per adopted Per adopted b. Youth & teen programs Parks & Rec fee Parks & Rec fee policies policies 3.00 n/a 13. Cancellation fee for facility and picnic shelter reservations More than 30 days notice of cancellation: 25% of fee 25% of fee 15 to 30 days notice of cancellation: 50% of fee 50% of fee 14 days or less notice of cancellation: No refund No refund 14. Disc golf Tournament fee, per participant 5.00 5.00 Disc rental, per set 8.00 8.00 Disc rental damage deposit 10.00 10.00 15. City Hall Council Chambers and Study Session Room Council Chambers (per hour) Residents 40.00 40.00 Non -Residents 48.00 50.00 Study Session Room (per hour) Residents No Charge No Charge Non -Residents 30.00 30.00 After-hours rentals (non-profits/CitV partners onlV): Room rates as listed above plus actual security costs, plus site supervisor. Site supervisor charge for after-hours rentals n/a 23.00 (3 hour minimum when site supervisor required) Damage Deposit 200.00 200.00 16. City Hall Plaza (per hour) Residents 65.00 65.00 Non Residents 97.00 82.00 Use of Electricity 22.00 22.00 MISCELLANEOUS FEES 1. Photocopies per page (per imprint) or actual cost if not printed by City 0.15 0.15 2. Blueprint copies Actual Cost Actual Cost Page 22 of 24 1370 (2017) 2017 Fee 2018 Fee 3. Notary fee (includes first 2 signatures) 10.00 10.00 Each additional person 10.00 10.00 4. Certified copies (per certification) 10.00 10.00 Additional pages 0.15 0.15 5. Custom map requests: For custom requests requiring plotting a fee of $60 per hour with a 15 minute minimum ($15.00) plus reimbursement for supplies as follows: 11" x 17" paper See Community 4.00 36" minimum wide plot, per lineal foot Development 5.00 DVD -recordable section 1.00 Page 23 of 24 1370 (2017) Section 2. Unless otherwise specifically stated, Resolution No. 1354 (2016) and prior fee resolutions are hereby rescinded and superseded by this Resolution. Section 3. On January 1 of each year, the fees set forth in this resolution may increase (if allowed by law) by the rate of increase, if any, of the CPI -W Seattle -Tacoma -Bremerton June to June Index published by the Bureau of Labor Statistics in the year prior, or by the actual increase in the cost of providing the service. Fees will be rounded to the next highest whole dollar. Section 4. Washington State Sales Tax will be added to fees listed in this resolution where required by State law. Section 5. The City Manager or Finance Director shall have the right to waive a fee if significant economic development or financial benefit of equal or greater value to the City can be demonstrated. Section 6. The City Clerk is authorized to make necessary corrections to this resolution including, but not limited to, the correction of scrivener's/clerical errors, references, resolution numbering, section/subsection numbers and any references thereto. PASSED this 21 day of November, 2017. ANDREW J. RHEAUME MAYOR ATTEST/AUTHENTICATED: i LAURA HATHAWA— CITY CLERK Filed with the City Clerk: November 16, 2017 Passed by the City Council: November 21, 2017 Resolution No. 1370 (2017) Page 24 of 24 1370 2017 APPENDIX H FUNDING SOURCE ALTERNATIVES FUNDING SOURCE ALTERNATIVES Several funding source alternatives are available to the City for the financing of projects in the CIP. Such alternative are listed below and followed by a brief description. Grants: Centennial Clean Water Fund (CCWF) Community Development Block Grant (CDBG) Community Investment Fund (CIF) US Economic Development Administration (US EDA) Loans: Centennial Clean Water Fund (CCWF) Water Pollution Control State Revolving Fund (SRF) Public Works Trust Fund (PWTF) Community Economic Revitalization Board (CERB) Bonds: Revenue Bonds Other: Developer Financing System Development Charge Utility Local Improvement Districts CENTENNIAL CLEAN WATER FUND (CCWF) The Department of Ecology (Ecology) provides both grants and loans for measures to prevent and control water pollution through the Centennial Clean Water Fund. Each biennium, the funds that support the CCWF program are subject to legislative approval. Grant money is available only to those who can document hardship. Where financial hard ship is determined, the total eligible project cost cannot exceed $10 million and the grant amount cannot be more than half, or $5 million. Hardship is demonstrated when project costs for construction of facilities result in total cost for debt service and operation and maintenance in excess of 1.5 percent of the median household income. A project may be phased and receive grant and loan moneys from several funding cycles to complete the project. In addition, a higher grant amount may be available if the 3 -year average local unemployment rate exceeds the 3 -year average statewide unemployment rate. Grants require a 50 percent matching fund, which is provided by a mandatory Centennial or SRF loan. If the project is enrolled in Ecology's Small Town Environmental Program, an in-kind match may be used. Grant funds from the CCWF program are allocated on a competitive basis, therefore a decrease in available funds results in a more competitive arena for potential grantees. Ranking criteria for CCWF grants include the potential for ecological damage of the affected water body, the need for a facility to meet an enforcement or compliance order and the presence or absence of a health emergency based on the existing conditions. Projects with enforcement orders, compliance orders, or health emergency declarations are considered high priority and receive points in the ranking process. Non -hardship construction projects are eligible for loans only, with eligibility up to 100 percent of project costs. Facility construction projects are eligible for up to 50 percent of the amount available to SRF, or approximately $33 million for fiscal year 2006. Eligible reserve capacity is defined differently for the CCWF and SRF programs. Ecology's CCWF program provides funding for wastewater treatment facilities up to 110 percent of capacity to meet existing need and the SRF program provides funding for reserve capacity to handle flows identified for the 20 -year projected growth within a service area. The project can serve commercial or industrial customer requirements up to the 20 -year projected need. WATER POLLUTION CONTROL STATE REVOLVING FUND (SRF) The Department of Ecology also administers the SRF program that provides low interest loans for water pollution control projects. Currently, SRF is offering 20 -year loans at 1.5 percent interest rates, and 5 -year loans at 0.5 percent interest rates. The primary program requirements are to have an approved facilities plan for treatment works and to demonstrate the ability to repay the loan through a dedicated funding source. The SRF can be used to finance sewer system replacement for the elimination of excessive infiltration and inflow and for the construction of facilities with reserve capacities to accommodate flows corresponding to the 20 -year projected growth in the service area. Land acquisition is not eligible for SRF funding. SRF loans can also be utilized for the refinancing of existing (non -SRF) debts used to fund eligible projects started after March 5, 1985. Eligible applicants for both the CCWF and SRF programs include Washington State counties, cities, towns, conservation districts, or other political subdivisions, municipalities, or quasi -municipal corporations. Other State agencies are not eligible to apply. TABLE 1 Centennial Clean Water Fund/State Revolving Fund Terms CCWF/SRF Loan Term Interest Rate Up to 5 years 0.5 percent More than five but less than 20 years 1.5 percent COMMUNITY DEVELOPMENT BLOCK GRANT (CDBG) The Community Development Block Grant program is a competitive source of federal funding for a broad range of community development projects. A primary requirement of the CDBG program is that the project must principally benefit at least 51 percent of the low -to -moderate income residents of the project area. The State typically receives about $7 million in federal funds per funding cycle. CDBG has two programs, including General Purpose and Planning Only. The General Purpose program provides grant funds for the design, construction, or reconstruction of water and sewer systems up to the amount of $750,000. The Planning Only program includes projects such as comprehensive plans, community development plans, capital improvement plans, and other plans such as land use and urban environmental design, economic development, floodplain and wetlands management, transportation, and utilities. Planning Only grants are limited to $24,000 for a single applicant or $40,000 for a joint applicant. Eligible applicants for the CDBG programs include cities and towns with less than 50,000 people or counties with populations less than 200,000. COMMUNITY INVESTMENT FUND (CIF) The Community Investment Fund partners with CDBG to fund projects that benefit at least 51 percent low to moderate income residents. An applicant would first apply to the CDGB General Purpose program, and meet the income limits of that program. At the discretion of the Public Work Board, an applicant may be asked to apply to the Community investment Fund. Additional grant funding, in the amount of $1 million may be obtained. To qualify for CIF, the project must be rated as one of the top three of the local WA - CERT Priority Rating Process, serve a minimum of 51.5 percent low to moderate income residents, and receive at least 65 points with the General Purpose application. PUBLIC WORKS TRUST FUND (PWTF) The Public Works Trust Fund is a revolving loan fund designed to help local governments finance public works projects through low-interest loans and technical assistance. The PWTF, established in 1985 by legislative action, offers loans substantially below market rates, payable over periods ranging up to 20 years. To be eligible for the PWTF programs, an applicant must be a local government such as a city, county, or a special purpose utility district. PWTF has four loan programs including Construction, Preconstruction, Planning, and Emergency. PWTF loan terms are summarized below: TABLE 2 Public Works Trust Fund Terms Local Match Interest Rate/Term Loan Limit Construction 15% 0.5%, 20 years $10,000,000 10% 1.0%, 20 years 5% 2.0%, 20 years Preconstruction(i) 15% 0.5%, 5 years $1,000,000 10% 1.0%, 5 years 5% 2.0%, 5 years Planning 0%(2) 0.0%, 6 years $50,000 Emergency 0%(2) 4.0%, 20 years $500,000 (1) Preconstruction loans can be refinanced to a 20 -year term, if the applicant obtains a subsequent PWTF Construction loan. (2) While a match is not required, it is recommended. The Construction Program accepts applications once per year in May, and the money becomes available approximately 1 year later. The Preconstruction and Planning programs are open on year-round basis and must be submitted to the Public Works Board prior the 15th of the month to be reviewed at the next Board meeting. These funds become available shortly after the Public Works Board makes their final decision as to the award. Emergency projects must have a locally declared emergency and are applied for on an open cycle depending on the availability of funds. Project expenditures are reimbursable from the date of the declared emergency. An applicant must have a long-term plan for financing its public works needs. If the applicant is a county or city, it must adopt the 1/4 percent real estate excise tax that is dedicated to public works construction projects. Eligible public works projects include streets and roads, bridges, storm sewers, sanitary sewer collection and treatment systems, and domestic water. Loans are presently offered only for purposes of repair, replacement, rehabilitation, reconstruction, or improvement of existing eligible public works systems. Eligible project costs can include expenses related to serving 20 -year forecasted growth as identified in comprehensive plans. Since substantially more trust fund dollars are requested than are available, local jurisdictions must compete for the available funds. The applications are carefully evaluated, and the Public Works Boards submits a prioritized list of those projects to the Legislature that are recommended to receive low-interest financing. The Legislature reviews the list and indicates its approval through the passage of an appropriation from the Public Works Assistance Account to cover the cost of the proposed loans. Once the Governor has signed the appropriation bill into law (an action that usually occurs by the following April), those local governments recommended to receive loans are offered a formal loan agreement with appropriate interest rates and terms as determined by the Public Works Board. The City is eligible for PWTF programs. COMMUNITY ECONOMIC REVITALIZATION BOARD (CERB) The Community Economic Revitalization Board's prime mission is to partner with business and industry and local governments to maintain and create jobs. Established by the Legislature in 1982, CERB provides low-interest loans or, in unique circumstances, grants to help finance local public infrastructure necessary to develop or retain stable business and industrial activities. Eligible public facilities include bridges, roads, domestic and industrial water, sanitary sewer, and storm sewer. Typically, CERB provides loans in the amount of $1 million and, where applicable, grants in the amount of $300,000. The interest rate is tied to the current cost of a l0 -year bond and a local match of 10 percent is required. Eligible applicants include Washington State subdivisions in partnership with private enterprise, including special purpose districts. If there is no economic partner, an applicant can produce a feasibility study that documents realistic job retention or creation. Applications must be submitted 45 days prior to a regularly scheduled CERB Meeting, which typically meets in January, March, July, and November. US ECONOMIC DEVELOPMENT ADMINISTRATION (US EDA) US EDA offers competitive grants up to $1 million for projects from Region 10. Projects are selected locally by an economic development district and submitted to Congress for competitive selection among other regions in the US. Similar to CERB, applicants must have an industrial partner ready to proceed or a feasibility study that establishes realistic job creation. REVENUE BONDS The most common source of funds for construction of major utility improvements is the sale of revenue bonds. These are tax-free bonds issued by a utility. The major source of funds for debt service on revenue bonds is from monthly sewer service charges. In order to make qualify to sell revenue bonds marketable to investors, the bonds typically have contractual provisions for the utility to meet debt coverage requirements. The City must show that its annual net operating income (gross income less operation and maintenance expenses) is must be equal to or greater than a factor, typically 1.2 to 1.4 times the annual debt service on all par debt. If a coverage factor has not been specified it will be determined at the time of any future bond issues. DEVELOPER FINANCING Developers typically fund the construction of extensions to the sewer mains to property within new plats. The developer extensions are turned over to the City for operation and maintenance upon completion. Developer extensions shall be constructed to meet the requirements of the Plan. SYSTEM DEVELOPMENT CHARGE In order to finance improvements of general benefit to a sewer utility, such as the City, a system development charge may by adopted. System development charges are usually established as one-time charges assessed against new sewer customers as a way to recover part or all of the cost of additional facilities constructed for their use. The system development charge or fee is deposited into a construction fund for construction of such facilities. The intent is that all new system customers will pay an equitable share of the cost of the system improvements needed to accommodate growth. Typical types of construction financed by the system development charge are general improvements that benefit the entire system, such as pump stations, gravity sewer lines, force mains, and office and storage space. UTILITY LOCAL IMPROVEMENT DISTRICTS Another potential source of funds for improvements comes through the formation of Utility Local Improvement Districts (ULIDs) involving a special assessment made against properties benefiting by the improvements. ULID bonds are further backed by a legal claim to the revenues generated by the utility, similar to revenue bonds. Sewer system expansion is a frequent application of ULID financing. Typically, ULIDs are formed by the City at the written request (by petition) of the property owners within a specific section of the service area. Upon the receipt of a sufficient number of signatures or petitions, and acceptance by the City council, the local improvement area is formed, and a sewer system is designed for that particular area in accordance with the Plan. Each separate property in the ULID is assessed in accordance with the special benefits the property receives from the wastewater system improvements. A City-wide ULID could form part of a financing package for large-scale capital projects such as sewer line extensions or replacements that benefit all residents in the service area. The assessment places a lien on the property that must be paid in full upon sale of the property. ULID participants have the option of paying their assessment immediately upon receipt, thereby reducing the portion of the costs financed by the ULID bonds. The advantages of ULID financing, as opposed to rate financing, to the property owner include: • The ability to avoid interest costs by early payment of assessments. • If the ULID assessment is paid in installments, it may be eligible to be deducted from federal income taxes. • Low-income senior citizens may be able to defer assessment payments until the property is sold. • Some Community Block Grant funds are available to property owners with incomes near or below poverty level. Funds are available only to reduce assessments. The major disadvantage to the ULID process is that it may be politically difficult to approve formation. The ULID process may be stopped if owners of 40 percent of the property area within the ULID boundary protest its formation. Also, there are significant legal and administrative costs associated with the ULID process, which increases total project costs by approximately 30 percent over other financing options.