2008 Report Relies on the Same Assessment Data As That Used to Report on Status in 2006

State of Maine Department of Environmental Protection Kennebunk River, Maine 2008 Integrated Water Quality Monitoring and Assessment Report Document Number: DEPLW0895 2008 Maine Integrated Water Quality Report Table of Contents Chapter 1 Preface.................................................................................................9 Data Sources and Acknowledgements .....................................................10 Sources of River and Stream Assessment Data.............................................. 10 Sources of Lake Assessment Data.................................................................. 10 Sources of Marine Assessment Data............................................................... 11 Sources of Wetlands Assessment Data........................................................... 11 Chapter 2 Executive Summary and Response to Comments .............................12 Executive Summary ..................................................................................12 Surface Waters................................................................................................. 12 Wetlands .......................................................................................................... 14 Ground Water................................................................................................... 14 Response to Comments ...........................................................................16 Process to Solicit Public Comments ................................................................ 16 Summary of Public Comments and Responses .............................................. 19 Chapter 3 Background ........................................................................................28 State Atlas and Water Quality Standards .................................................28 Water Quality Standards Program ................................................................... 31 Highlights for Point Source Pollution Control Programs............................31 Technical Assistance / Pollution Prevention Program ..................................... 31 Construction of Wastewater Treatment Facilities ............................................ 32 Maine Combined Sewer Overflow Program..................................................... 32 Small Community Facilities Program ............................................................... 33 Licensing of Wastewater Discharges............................................................... 34 Overboard Discharge Grant Program .............................................................. 34 Compliance Evaluation..................................................................................... 36 Enforcement of Water Quality Laws................................................................. 37 Nature & Extent of Nonpoint Sources of Pollutants and Program Recommendations ....................................................................................37 The Maine NPS Water Pollution Control Program........................................... 37 Coastal Nonpoint Source Priority Watersheds................................................. 38 Watershed Management for Stormwater Programs ........................................ 39 Land Use and Growth Management ................................................................ 40 Education and Outreach ...........................................................................41 The Environmental Impact and Economic & Social Costs/Benefits of Effective Water Quality Programs.............................................................42 Nonpoint Source Management ........................................................................ 42 Economic Contribution of Maine Great Ponds................................................. 43 The Pollution Prevention (P2) Program ........................................................... 43 Chapter 4 Surface Water Monitoring & Assessments.........................................45 Assessment Methodology.........................................................................45 Listing Methodology for the 2008 305b / 303d Integrated Report List ............. 45 Assessment Criteria..................................................................................50 Rivers and Streams.......................................................................................... 50 Lakes and Ponds.............................................................................................. 51 Estuarine and Marine Waters........................................................................... 51 Data Interpretation............................................................................................ 52 Integrated Report Lists of Categories 1 Through 5...................................54 Rivers / Streams .......................................................................................59 Water Classification Program........................................................................... 59 Summary of Statewide River and Stream Attainment Status .......................... 61 Main Stems of Major Rivers ............................................................................. 64 Toxics ............................................................................................................... 64 Maine DEP 2008 305(b) Report and 303(d) List 2 2008 Maine Integrated Water Quality Report Aquatic Life Monitoring..................................................................................... 64 Reports of Fish Kills ......................................................................................... 65 Achieving Comprehensive Assessment of All Streams: Probability-based Design Monitoring ............................................................................................ 65 Lakes / Ponds ...........................................................................................65 Attainment of Classification.............................................................................. 66 Invasive Aquatic Plants .................................................................................... 70 Estuaries / Ocean .....................................................................................70 Background ...................................................................................................... 71 Sources of Monitoring Data.............................................................................. 72 Summary of Statewide Status.......................................................................... 73 Protection of Marine Life (Designated use: Habitat for fish and estuarine / marine life)........................................................................................................ 75 Casco Bay Estuary Partnership ....................................................................... 75 Chapter 5 Wetlands ............................................................................................77 Background...............................................................................................77 Federal Regulation........................................................................................... 77 Wetlands Regulatory Program in Maine’s Organized Towns .......................... 77 Wetlands Regulatory Program in Unorganized Territories .............................. 78 Development of Wetland Water Quality Standards...................................78 Integrity of Wetland Resources.................................................................79 Wetland Monitoring and Assessment............................................................... 79 Extent of Wetland Resources ...................................................................80 Wetland Loss Tracking in Maine’s Organized Towns...................................... 80 Wetland Loss Tracking in Maine’s Unorganized Territories............................. 82 Chapter 6 Groundwater Monitoring & Assessments ..........................................83 Overview ...................................................................................................83 Background...............................................................................................83 Assessment of Ground Water Quality.......................................................84 Aquifer Characterization Activities ................................................................... 84 Overview of Ground Water Contamination Sources ........................................ 84 Petroleum Storage Tanks and Product Spills ...........................................85 Underground Tanks.......................................................................................... 85 Above Ground Storage Tanks.......................................................................... 86 Oil or Hazardous Materials Spills..............................................................87 Agriculture.................................................................................................88 Maine's Nutrient Management Law.................................................................. 88 Pesticides ......................................................................................................... 88 Landfills.....................................................................................................89 Active Landfills ................................................................................................. 89 Inactive

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