7-Attachment B-Water ComprehensivePlan 2014.pdf

CITY OF OAK HARBOR

ISLAND COUNTY, WASHINGTON

WATER SYSTEM PLAN

G&O #13404

SEPTEMBER 2014

ISLAND COUNTY WASHINGTON

2013 WATER SYSTEM PLAN UPDATE

G&O #13404

SEPTEMBER 2014

i

TABLE OF CONTENTS

EXECUTIVE SUMMARY

CHAPTER 1 – DESCRIPTION OF WATER SYSTEM

INTRODUCTION ................................................................................................................. 1-1 OWNERSHIP AND MANAGEMENT ...................................................................................... 1-1 SYSTEM HISTORY AND BACKGROUND .............................................................................. 1-2 EXISTING SYSTEM ............................................................................................................. 1-4

Service Area ......................................................................................................... 1-4 Retail Service Area .................................................................................. 1-4 Wholesale Service Area ........................................................................... 1-4 Future Service Area ................................................................................. 1-5

Transmission Mains ............................................................................................. 1-5 Water Source Supply ........................................................................................... 1-5

Primary Supply – City of Anacortes ........................................................ 1-5 Auxiliary Supply – Wells 8, 9 and 11 ...................................................... 1-6

Water Rights ........................................................................................................ 1-8 Water Service Agreement ........................................................................ 1-8

Reservoirs ............................................................................................................ 1-9 Eastside Reservoir .................................................................................... 1-9 Westside Reservoirs 1 and 2 .................................................................... 1-9 North Reservoir ........................................................................................ 1-9

Booster Stations ................................................................................................. 1-10 Ault Field Booster Station ..................................................................... 1-10 Heller Street Booster Station ................................................................. 1-11 Redwing Booster Station ....................................................................... 1-11

Pressure Zones ................................................................................................... 1-12 Pressure Reducing Valves.................................................................................. 1-14 Altitude Valves .................................................................................................. 1-14 Distribution System ........................................................................................... 1-14

GENERAL INFORMATION ................................................................................................. 1-15 Geographical Information .................................................................................. 1-15

Topography ............................................................................................ 1-15 Climate ................................................................................................... 1-16 Soil ......................................................................................................... 1-16 Sensitive Areas ....................................................................................... 1-17

SYSTEM INFORMATION ................................................................................................... 1-20 Interties .............................................................................................................. 1-20 Wholesale Customers......................................................................................... 1-20 Adjacent and Neighboring Purveyors ................................................................ 1-21

Bayview Estates Water Company .......................................................... 1-21 Bets Water System ................................................................................. 1-21 Crosswoods Water Company ................................................................. 1-22 ii

Evergreen Park ....................................................................................... 1-22 Fairway Estates, Inc. .............................................................................. 1-22 Fir Grove Mobile Park ........................................................................... 1-23 Forest Hills Park Community ................................................................ 1-23 Highland Trace Water Company, Inc. ................................................... 1-23 Hillcrest Village Water Company, Inc. .................................................. 1-23 Indian Ridge Water Company ............................................................... 1-24 Naval Air Station Whidbey Island ......................................................... 1-24 Parkwood Manor .................................................................................... 1-24 Pine Terrace Water Association ............................................................. 1-24 Suburban Hills Community Association ............................................... 1-25 Suburban Mobile Park ........................................................................... 1-25 Swantown Water District ....................................................................... 1-25 Valley High Park.................................................................................... 1-25 Waterloo Acres ...................................................................................... 1-26 West Ridge Water System ..................................................................... 1-26

Zoning and Land Use ......................................................................................... 1-27 RELATED PLANS AND DOCUMENTS ................................................................................ 1-32

Anacortes 2011 Water System Plan ................................................................... 1-32 Oak Harbor 2003 Water System Plan ................................................................ 1-32 Oak Harbor Comprehensive Plan ...................................................................... 1-32 Oak Harbor Municipal Code .............................................................................. 1-32 Island County Coordinated Water Supply Plan ................................................. 1-32 Island County Water Resource Management Plan ............................................ 1-33 Naval Air Station Whidbey Island Water System Plan ..................................... 1-33 City of Oak Harbor 2011 to 2016 Capital Improvement Plan ........................... 1-33 New Reservoir Project Predesign Report .......................................................... 1-33 Ault Field Booster Station Technical Memorandum ......................................... 1-34

SERVICE AREA POLICIES ................................................................................................. 1-34 DUTY TO SERVE .............................................................................................................. 1-37 SATELLITE MANAGEMENT .............................................................................................. 1-38 CONSUMER AND AGENCY INPUT ..................................................................................... 1-39

Regional Planning Consistency ......................................................................... 1-39 Local Agencies ................................................................................................... 1-39 Public Participation ............................................................................................ 1-39

CHAPTER 2 – BASIC PLANNING DATA

INTRODUCTION ................................................................................................................. 2-1 HISTORICAL AND EXISTING SYSTEM INFORMATION .......................................................... 2-1

Population ............................................................................................................ 2-1 Service Connections ............................................................................................. 2-2

WATER PRODUCTION ........................................................................................................ 2-3 Average Day/Maximum Day Demand ................................................................ 2-5 Peak Hour Demand .............................................................................................. 2-6

WATER USE ...................................................................................................................... 2-7 iii

Water Consumption ............................................................................................. 2-7 Equivalent Residential Units ................................................................................ 2-9 Per Capita Demand ............................................................................................ 2-10 Distribution System Leakage ............................................................................. 2-11 Seasonal Variations ............................................................................................ 2-12 Large Water Users ............................................................................................. 2-13

PROJECTED SYSTEM INFORMATION ................................................................................ 2-14 Population .......................................................................................................... 2-14

SERVICE CONNECTIONS .................................................................................................. 2-16 WATER USE .................................................................................................................... 2-16

Water Consumption ........................................................................................... 2-16 Equivalent Residential Units .............................................................................. 2-18 Average Day/Maximum Day/Peak Hour Demand ............................................ 2-19

WATER PURCHASE AND WELL PRODUCTION .................................................................. 2-21 Source Information ............................................................................................ 2-21

CHAPTER 3 – SYSTEM ANALYSIS

INTRODUCTION ................................................................................................................. 3-1 SYSTEM DESIGN STANDARDS ........................................................................................... 3-1 GENERAL FACILITY STANDARDS ...................................................................................... 3-1

Fire Flow .............................................................................................................. 3-3 WATER QUALITY STANDARDS AND ANALYSIS ................................................................. 3-4

Water Quality Standards ...................................................................................... 3-4 Testing Requirements .......................................................................................... 3-5 Bacteriological ..................................................................................................... 3-6 Inorganic Physical and Chemical Characteristics ................................................ 3-7 Volatile Organic Compounds and Synthetic Organic Compounds ..................... 3-8 Asbestos ............................................................................................................... 3-9 Lead and Copper ................................................................................................ 3-10 Radionuclides and Radon .................................................................................. 3-11 Disinfectants/Disinfection Byproducts (D/DBP) ............................................... 3-12 EPA Unregulated Contaminants ........................................................................ 3-12 Groundwater Rule .............................................................................................. 3-14 Fluoridation ........................................................................................................ 3-14 Chlorination ....................................................................................................... 3-14

WATER QUALITY MONITORING SCHEDULE .................................................................... 3-15 SYSTEM COMPONENT ANALYSIS .................................................................................... 3-16

Source of Supply Analysis ................................................................................. 3-16 Water Rights Analysis ....................................................................................... 3-16 Source Capacity Analysis .................................................................................. 3-16

Average Day Demand ............................................................................ 3-16 Maximum Day Demand ......................................................................... 3-19

Storage Analysis ................................................................................................ 3-21 Operational Storage ............................................................................... 3-21 Equalizing Storage ................................................................................. 3-22 iv

Standby Storage ..................................................................................... 3-23 Fire Suppression Storage ....................................................................... 3-24 Dead Storage .......................................................................................... 3-24

Booster Station Analysis .................................................................................... 3-25 Ault Field Booster Station ..................................................................... 3-26 Heller Street Booster Station ................................................................. 3-26 Redwing Booster Station ....................................................................... 3-27

Transmission Main and Distribution System Analysis ...................................... 3-28 SYSTEM DEFICIENCIES .................................................................................................... 3-29

Water Rights and Source of Supply ................................................................... 3-29 Storage ............................................................................................................... 3-29 Booster Stations ................................................................................................. 3-29 Distribution System ........................................................................................... 3-30 Treatment ........................................................................................................... 3-30

CHAPTER 4 – HYDRAULIC ANALYSIS

INTRODUCTION ................................................................................................................. 4-1 HYDRAULIC MODELING PROGRAM ................................................................................... 4-1 MODEL LAYOUT AND CONSTRUCTION .............................................................................. 4-2

Source .................................................................................................................. 4-2 Service Domain .................................................................................................... 4-2 Storage ................................................................................................................. 4-2 Model Demands ................................................................................................... 4-3 Scenarios .............................................................................................................. 4-3

MODEL CALIBRATION ....................................................................................................... 4-3 MODEL SIMULATION AND RESULTS .................................................................................. 4-4

Peak Hour Demand .............................................................................................. 4-4 Available Fire Flow ............................................................................................. 4-4

SYSTEM RECOMMENDATIONS ........................................................................................... 4-7

CHAPTER 5 – WATER USE EFFICIENCY PROGRAM

INTRODUCTION ................................................................................................................. 5-1 WATER USE EFFICIENCY................................................................................................... 5-1 PAST CONSERVATION PROGRAMS ..................................................................................... 5-2 PLANNING REQUIREMENTS ............................................................................................... 5-3

Data Collection and Reporting ............................................................................. 5-3 Demand Forecasting ............................................................................................ 5-4 Distribution System Leakage ............................................................................... 5-5

SELECTION AND EVALUATION OF WUE MEASURES ......................................................... 5-6 Goal 1: Maintain DSL Below 10 Percent ........................................................... 5-6 Goal 2: Maintain Single-Family Residential Use at or Below 64 gpcd .............. 5-6 Performance Monitoring ...................................................................................... 5-7 Water Use Efficiency Measures ........................................................................... 5-7 Mandatory Measures ............................................................................................ 5-7 Supplementary Measures ..................................................................................... 5-9 v

Implement Source Metering and Meter Calibration ................................ 5-7 Implement Service Metering and Meter Calibration ............................... 5-8 Implement Leak Detection and Water Accounting ................................. 5-8 Implement Customer Education .............................................................. 5-8 Evaluate and Implement Conservation Rate Structure ............................ 5-8 Evaluate Reclaimed Water Opportunities ................................................ 5-9

Supplementary Measures ..................................................................................... 5-9 Bills Showing Consumption History ....................................................... 5-9 Customer Leak Detection ........................................................................ 5-9 Purveyor Assistance ............................................................................... 5-10

Summary of WUE Measures ............................................................................. 5-10 WATER SAVINGS PROJECTIONS ....................................................................................... 5-10

CHAPTER 6 – SOURCE PROTECTION PROGRAM

INTRODUCTION ................................................................................................................. 6-1 SUSCEPTIBILITY ASSESSMENT .......................................................................................... 6-2 WELLHEAD PROTECTION AREA DELINEATION .................................................................. 6-2

Method of Delineation ......................................................................................... 6-2 Calculated Fixed Radius Method ............................................................. 6-2 Analytical Models .................................................................................... 6-3 Numeric Method ...................................................................................... 6-3

Analysis................................................................................................................ 6-3 Well 8 ....................................................................................................... 6-3 Well 9 ....................................................................................................... 6-4 Well 11 ..................................................................................................... 6-4

CONTAMINANT SOURCE INVENTORY ................................................................................ 6-4 Potential Sources of Contamination ..................................................................... 6-4

Landfills ................................................................................................... 6-5 Commercial and Industrial Activity......................................................... 6-5 RCRA Generators .................................................................................... 6-6 Underground Storage Tanks .................................................................... 6-7 Confirmed or Suspected Contamination Sites ......................................... 6-8 Septic Systems ......................................................................................... 6-8 Improperly Sealed or Secured Wells ....................................................... 6-8 Accidental Spills ...................................................................................... 6-9

INVENTORY DATA SOURCES ............................................................................................. 6-9 SPILL/INCIDENT RESPONSE PROGRAM ............................................................................ 6-10 CONTINGENCY PLANNING ............................................................................................... 6-11 ACTIONS ......................................................................................................................... 6-12

CHAPTER 7 – OPERATION AND MAINTENANCE PROGRAM

INTRODUCTION ................................................................................................................. 7-1 WATER SYSTEM MANAGEMENT AND PERSONNEL ............................................................ 7-1

Staffing.. ............................................................................................................... 7-1 Certification Requirements .................................................................................. 7-4 vi

Professional Growth............................................................................................. 7-5 WATER SYSTEM OPERATION AND CONTROL .................................................................... 7-5

Major System Components .................................................................................. 7-5 Source Operation and Control ................................................................. 7-6 Transmission Line Operation and Control ............................................... 7-7 Reservoir Operation and Control ............................................................. 7-7 Booster Station Operation and Control .................................................... 7-9 Distribution System Operation and Control .......................................... 7-11 Pressure Reducing Valve Operation and Control .................................. 7-11 Altitude Valve Operation and Control ................................................... 7-12

SAFETY PROGRAM .......................................................................................................... 7-12 RECORDKEEPING ............................................................................................................. 7-12

Maintenance ....................................................................................................... 7-12 Customer Complaints......................................................................................... 7-13

EXISTING WATER SYSTEM EQUIPMENT .......................................................................... 7-14 PREVENTIVE MAINTENANCE SCHEDULE ......................................................................... 7-14 EMERGENCY RESPONSE PROGRAM ................................................................................. 7-15

Emergency Phone Contacts ............................................................................... 7-16 Public Notification ............................................................................................. 7-17 Bacteriological Presence Detection Procedure .................................................. 7-18 IOC/VOC/SOC Detection Procedures ............................................................... 7-19 Unregulated Contaminant Detection Procedures ............................................... 7-20

EMERGENCY ACTION PLAN ............................................................................................ 7-20 VULNERABILITY ANALYSIS ............................................................................................ 7-21

Power Failure ..................................................................................................... 7-21 Earthquake ......................................................................................................... 7-22 Severe Snowstorm ............................................................................................. 7-24 Flooding ............................................................................................................. 7-25 Fire ..................................................................................................................... 7-26 Vandalism/Bioterrorism/Terrorism .................................................................... 7-28 Contamination of Water Supply ........................................................................ 7-28 Chemical Spill .................................................................................................... 7-31

CONTINGENCY OPERATIONAL PLAN ............................................................................... 7-31 Source of Supply ................................................................................................ 7-31 Storage Facilities ................................................................................................ 7-32 Booster Stations ................................................................................................. 7-32

Ault Field Booster Station ..................................................................... 7-32 Redwing Booster Station ....................................................................... 7-32 Heller Street Booster Station ................................................................. 7-32

Transmission Mains ........................................................................................... 7-33 Loss of 10-Inch Transmission Main ...................................................... 7-33 Loss of 24-Inch Transmission Main ...................................................... 7-33 Loss of 10-Inch and 24-Inch Transmission Main .................................. 7-34

CROSS-CONNECTION CONTROL ...................................................................................... 7-35 History................................................................................................................ 7-36 vii

Current Activity ................................................................................................. 7-36 CCC ORDINANCE AND PROGRAM ................................................................................... 7-37

CC Program Staffing and Training .................................................................... 7-37 Testing and Inspection ....................................................................................... 7-37

CHAPTER 8 – CAPITAL IMPROVEMENT PROGRAM

INTRODUCTION ................................................................................................................. 8-1 RECOMMENDED IMPROVEMENTS ...................................................................................... 8-1

Water Rights and Source Capacity Projects ........................................................ 8-2 S-1: Well No. 9 Replacement ................................................................. 8-2 S-2: Emergency Supply Study ................................................................ 8-2 S-3: Eastside Reservoir Demolition ........................................................ 8-2 S-4: Emergency Supply Well .................................................................. 8-3

Transmission Line Projects .................................................................................. 8-3 T-1: Cross City Transmission Main ........................................................ 8-3 T-2: North-End Trunk Main: Phases 1 and 2......................................... 8-4 T-3: West 384 Zone Extension: Phase 1 ................................................ 8-4 T-4: 24-Inch Transmission Line Investigation ....................................... 8-5 T-5: Westside Water Main Extension ..................................................... 8-5 T-6: Campbell Lake Transmission Main Replacement .......................... 8-5

Booster Station ..................................................................................................... 8-6 BS-1: Ault Field Booster Station Surge Protection Analysis ................. 8-6 BS-2: Ault Field Booster Station Pump Replacement ............................ 8-7 BS-3: North Booster Pump Station ......................................................... 8-7

Distribution System ............................................................................................. 8-8 DS-1: NE Regatta Drive Pipeline ........................................................... 8-8 DS-2: Glencoe Street Fire Flow Improvements...................................... 8-8 DS-3: SW 10th Court Pipe Replacement ................................................. 8-8 DS-4: SW 11th Court Pipe Replacement ................................................. 8-8 DS-5: Erin Park Main Road Extension ................................................... 8-9 DS-6: Erin Park Road Tie-In .................................................................. 8-9 DS-7: Industrial Avenue Tie-In .............................................................. 8-9 DS-8: Heller Reservoir Extension .......................................................... 8-9 DS-9: Steel/AC Pipe Replacement ....................................................... 8-10

Pressure Zone ..................................................................................................... 8-11 PZ-1: O’Leary Way Water Main .......................................................... 8-11 PZ-2: South-End NASWI Connection .................................................. 8-11 PZ-3: East 384 Zone Development ....................................................... 8-11 PZ-4: West 384 Zone Development ..................................................... 8-12 PZ-5: 322 Zone Development ............................................................... 8-12

SUMMARY OF RECOMMENDED IMPROVEMENTS .............................................................. 8-13 viii

CHAPTER 9 – FINANCIAL PROGRAM

INTRODUCTION ................................................................................................................. 9-1 EXISTING WATER UTILITY FINANCIAL STATUS ................................................................ 9-1

Current Water Rates ............................................................................................. 9-1 Current Connection Fees ...................................................................................... 9-2

In-City Connections ................................................................................. 9-2 Out-of-City Connections .......................................................................... 9-2

HISTORICAL REVENUES AND EXPENSES ............................................................................ 9-3 PROJECTED REVENUES AND EXPENSES ............................................................................. 9-5

Projected Growth ................................................................................................. 9-5 CAPITAL IMPROVEMENT PROJECT FUNDING SOURCE ALTERNATIVES .............................. 9-9

Grants ................................................................................................................... 9-9 Washington General Purpose Community Development Block

Grant (CDBG) .................................................................................... 9-9 US Economic Development Administration (US EDA) ....................... 9-10

Loans .................................................................................................................. 9-10 Public Works Trust Fund (PWTF) ......................................................... 9-10 Community Economic Revitalization Board (CERB) ........................... 9-12 Drinking Water State Revolving Fund (DWSRF) ................................. 9-13

Bonds ................................................................................................................. 9-14 Revenue Bonds ...................................................................................... 9-14 General Obligation Bonds...................................................................... 9-14

Other Funding Opportunities ............................................................................. 9-15 Utility Local Improvement Districts (ULIDs) ....................................... 9-15 ix

LIST OF TABLES

No. Table Page

1-1 Groundwater Source Summary ............................................................................ 1-6 1-2 Water Rights Summary ........................................................................................ 1-8 1-3 Reservoir Summary ........................................................................................... 1-10 1-4 Booster Station Summary .................................................................................. 1-12 1-5 Pressure Reducing Valve Summary ................................................................... 1-14 1-6 Distribution System Piping Summary ............................................................... 1-15 1-7 Adjacent Purveyor Summary ............................................................................. 1-26 1-8 Existing Zoning Characterization ...................................................................... 1-30 1-9 County Defined Zoning Inventory Summary .................................................... 1-31 1-10 Service Area Policy Summary ........................................................................... 1-35 2-1 Historical Population Summary ........................................................................... 2-2 2-2 Historical Water System Connection Summary .................................................. 2-3 2-3 Historical Water Purchase and Production .......................................................... 2-4 2-4 Monthly Historical Source Production for 2012 .................................................. 2-4 2-5 Historical Average Day Demand and Maximum Day Demand .......................... 2-5 2-6 Historical Maximum Data and Calculated Peak Hour Demand .......................... 2-7 2-7 Historical Annual Water Consumption by Customer Class ................................ 2-8 2-8 Historical ERU Calculation summary ............................................................... 2-10 2-9 Historical ERU Summary .................................................................................. 2-10 2-10 Historical per Capita Water Use Summary ........................................................ 2-11 2-11 Historical Distribution system Leakage Summary ............................................ 2-12 2-12 Top City Water Users for 2012 .......................................................................... 2-14 2-13 Projected Population of Oak Harbor and Retail Service Area ........................... 2-15 2-14 Projected Water Consumption ........................................................................... 2-17 2-15 Projected Service Area ERUs ............................................................................ 2-19 2-16 Projected Service Area ADD, MDD, and PHD Consumption .......................... 2-20 2-17 Retail Service Area Projected Source Production ............................................. 2-21 3-1 General Facility Standards Summary .................................................................. 3-1 3-2 Minimum Fire Flow Requirements ...................................................................... 3-4 3-3 Drinking Water Regulations and Required Action Summary ............................. 3-5 3-4 Water Quality Standards for Inorganic Chemical Constituents ........................... 3-7 3-5 Water Quality Standards for Volatile Organic and Synthetic Organic

Chemical Constituents ................................................................................... 3-8 3-6 LCR Sample Results Summary ......................................................................... 3-11 3-7 Water Quality Standards for Radionuclides ...................................................... 3-11 3-8 Unregulated Contaminant Monitoring and Analysis Information ..................... 3-13 3-9 Water Quality Monitoring Requirements .......................................................... 3-15 3-10 2012 Source Production and Water Rights Summary ....................................... 3-16 3-11 Source ADD Capacity Analysis Summary ........................................................ 3-18 3-12 Service Area MDD Capacity Analysis Summary .............................................. 3-19 3-13 Retail Service Area and Seaplane Base MDD Capacity Analysis Summary .... 3-20

No. Table Page x

3-14 Water System Storage Capacity Analysis .......................................................... 3-25 3-15 Ault Field Booster Station Capacity Analysis ................................................... 3-26 3-16 Heller Street Booster Station Capacity Analysis ............................................... 3-27 3-17 Redwing Booster Station Capacity Analysis ..................................................... 3-28 4-1 Model Storage Tank Information ......................................................................... 4-3 4-2 Model Calibration Data ........................................................................................ 4-4 4-3 Areas of Existing Fire Flow Deficiencies ............................................................ 4-6 5-1 Summary of Water Use Data Collection ............................................................. 5-3 5-2 Retail Service Area Projected Required Production ............................................ 5-4 5-3 Historical and Existing Distribution System Leakage Summary ........................ 5-5 5-4 Water Use Efficiency Measures ......................................................................... 5-10 5-5 WUE Program Savings Summary ..................................................................... 5-12 6-1 Zone of Contribution Groundwater Source Radii Summary ............................... 6-4 6-2 Chemicals Associated with Commercial and Industrial Activities ...................... 6-6 7-1 Water System Staffing and Responsibility Summary .......................................... 7-1 7-2 Water System Classification ................................................................................ 7-4 7-3 Minimum Education and Experience Requirements for Water Works

Operator Certifications ................................................................................... 7-4 7-4 Water System Staffing and Certification Level Summary .................................. 7-5 7-5 Westside Reservoirs Alarms and Controls .......................................................... 7-8 7-6 Eastside Reservoir Alarms and Controls ............................................................. 7-8 7-7 Ault Field Booster Station Control Set Points ................................................... 7-10 7-8 Heller Street Booster Station Control Set Points ............................................... 7-10 7-9 Redwing Booster Station Control Set Points ..................................................... 7-11 7-10 Required Data Acquisition and Recordkeeping Frequency ............................... 7-13 7-11 Water System Operation and Maintenance Equipment ..................................... 7-14 7-12 Water System Routine Maintenance Schedule .................................................. 7-15 7-13 Emergency Phone Contact List .......................................................................... 7-16 7-14 Bacteriological Presence Detection Procedure .................................................. 7-19 7-15 Emergency Response Procedures for Power Failure ......................................... 7-22 7-16 Emergency Response Procedures for an Earthquake ......................................... 7-23 7-17 Emergency Response Procedures for a Severe Snowstorm ............................... 7-24 7-18 Emergency Response Procedures for Flooding ................................................. 7-25 7-19 Emergency Response Procedures for Fire ......................................................... 7-26 7-20 Emergency Response Procedures for Contamination of the Water Supply ...... 7-29 8-1 Source-Related Capital Improvement Project Summary ..................................... 8-3 8-2 Transmission Main-Related Capital Improvement Project Summary ................. 8-6 8-3 Booster Station-Related Capital Improvement Project Summary ....................... 8-7 8-4 Distribution System-Related Capital Improvement Project Summary .............. 8-10 8-5 Pressure Zone-Related Capital Improvement Project Summary ....................... 8-13 8-6 Projected Capital Improvement Project Schedule ............................................. 8-13 9-1 Water Service Rates Through 2016 ..................................................................... 9-1 9-2 Historical Revenues and Expenditures for Water Fund 401 ................................ 9-4

No. Table Page xi

9-3 Projected Revenues and Expenditures for Water Fund 401 ................................ 9-7 9-4 PWTF Loan Terms ............................................................................................ 9-11 9-5 DWSRF Loan Terms ......................................................................................... 9-14

LIST OF FIGURES

No. Figure On or Follows Page

1-1 City of Oak Harbor Location Map ....................................................................... 1-2 1-2 Existing Facilities Schematic Diagram ................................................................ 1-4 1-3 Existing Facilities Map ........................................................................................ 1-4 1-4 Boundaries Map ................................................................................................... 1-4 1-5 Service Areas Map ............................................................................................... 1-4 1-6 Existing Pressure Zone Schematic ..................................................................... 1-14 1-7 Future Pressure Zone Schematic ........................................................................ 1-14 1-8 Topography Map ................................................................................................ 1-16 1-9 Historical Monthly Precipitation and Average Temperature ............................. 1-16 1-10 Soil Classification Map ...................................................................................... 1-16 1-11 Sensitive Areas Map .......................................................................................... 1-18 1-12 Critical Aquifer Recharge Areas Map ............................................................... 1-20 1-13 Adjacent Water Purveyor Map .......................................................................... 1-22 1-14 Existing Zone Map ............................................................................................. 1-28 1-15 County Define Zoning Map ............................................................................... 1-32 2-1 Historical Annual Water Consumption by Customer Class ................................ 2-9 2-2 Annual Water Use Seasonal Variations by Customer Class .............................. 2-13 2-3 Historical and Projected Service Area Annual Water Consumption ................. 2-18 3-1 Water System Storage Components................................................................... 3-22 4-1 Existing Available Fire Flow ............................................................................... 4-6 4-2 2033 Available Fire Flow with Existing System ................................................. 4-6 4-3 2033 Available Fire Flow with CIPs ................................................................... 4-6 5-1 WUE Program Required Production ................................................................. 5-13 6-1 Wellhead Protection Areas .................................................................................. 6-4 7-1 Water System Operation and Management Personnel Flow Chart ..................... 7-3 7-2 IOC/VOC/SOC Detection Procedure ................................................................ 7-20 8-1 CIP Project Map ................................................................................................... 8-2 9-1 Historical and Projected Revenues, Expenditures, and Surplus .......................... 9-8 xii

APPENDICES

Appendix A – DOH Information and Water Facilities Inventory Appendix B – Water Service Agreements and Water Rights Appendix C – Ault Field Booster Station Technical Memorandum Appendix D – Unintended Discovery Protocol Appendix E – Oak Harbor Municipal Code Title 13 Appendix F – 2009 New Reservoir Project Predesign Report Appendix G – Cross-Connection Control Plan Appendix H – Design and Performance Standards Appendix I – Local Government Consistency Review Checklist Appendix J – Plan Review Comments and Correspondence Appendix K – Coliform and Nitrate Violation Letters and Notifications Appendix L – Coliform Monitoring Plan Appendix M – Water Quality Data Appendix N – Water Quality Monitoring Plan Appendix O – Hydraulic Model Results Appendix P – Water Conservation Program Appendix Q – Water Use Efficiency Program Information Appendix R – Wellhead Protection Program Appendix S – Emergency Response Manual Appendix T – Detailed Cost Estimates

LIST OF ABBREVIATIONS

AAF average annual flow ac acre ACOE Army Corps of Engineers ADWF average dry weather flow AKART all known, available, and reasonable technologies avg. average BOD5 5-day biochemical oxygen demand BTU British thermal units CaCO3 calcium carbonate CBOD5 5-day carbonaceous biochemical oxygen demand CCWF Centennial Clean Water Fund cf cubic feet cfm cubic feet per minute CFR Code of Federal Regulations cfs cubic feet per second CFU colony-forming units CIP Capital Improvement Projects CM construction management CMU concrete masonry units COD chemical oxygen demand conc. concentration constr. construction CWA Clean Water Act cy cubic yards DMR discharge monitoring reports DNS determination of non-significance DO dissolved oxygen DOH Department of Health DT dry tons EA each EIS Environmental Impact Statement EPA Environmental Protection Agency ERU equivalent residential unit ESA Endangered Species Act FEMA Federal Emergency Management Agency FIRM Flood Insurance Rate Maps F/M food-to-microorganism ratio fps feet per second ft2 square feet FTE full-time equivalent gal. gallons gfd gallons per square foot per day GMA Growth Management Act gpad gallons per acre per day gpcd gallons per capita per day gpd gallons per day gpd/ft2 gallons per day per square foot gph gallons per hour gpm gallons per minute gpm/ft2 gallons per minute per square foot HDPE high density polyethylene HMI Human-Machine Interface hp horsepower HPA Hydraulic Project Approval HRT hydraulic residence time HVAC heating, ventilation, and air conditioning I/I infiltration and inflow

in. inches kVA kilovolt-amps kW kilowatt kWh kilowatt hour lb pounds lb/cap/d pounds per capita per day lb/d pounds per day lb/ft2/d pounds per square foot per day lf linear foot LS lump sum max. maximum MBR membrane bioreactor MDF maximum day flow mg milligrams MG million gallons mgd million gallons per day mg/L milligrams per liter misc.