NEW HAMPSHIRE NONPOINT SOURCE MANAGEMENT PROGRAM PLAN 2020-2024 Cover image: Kimpton Brook wetland area, Wilmot, NH. Credit: Sandt Michener R-WD-19-22 NEW HAMPSHIRE NONPOINT SOURCE MANAGEMENT PROGRAM PLAN – 2020-2024 Prepared by the Watershed Management Bureau Watershed Assistance Section Robert R. Scott, Commissioner Clark Freise, Assistant Commissioner Thomas O’Donovan, P.E., Water Division Director October, 2019 www.des.nh.gov i ACKNOWLEDGEMENTS Thank you to all of our Nonpoint Source Management Program partners for their input and advice for this update to the New Hampshire Nonpoint Source Management Program Plan. AGRICULTURE Jennifer Gornnert, Division of Regulatory Services, NH Department of Agriculture, Markets and Food Rob Johnson, II, New Hampshire Farm Bureau Federation Don Keirstead, USDA, Natural Resources Conservation Service Carl Majewski, UNH Cooperative Extension Richard Mellor, NH Association of Conservation Districts CHLORIDES AND WINTER ROAD MAINTENANCE Stephanie Cottrell, UNH Technology Transfer Center Marilee LaFond, UNH Technology Transfer Center Linda Magoon, NHDES Air Resources Division Pat Santoso, Axiomatic DEVELOPED LAND Sherry Godlewski, NHDES Air Resources Division and NH Coastal Adaptation Workgroup James Houle, UNH Stormwater Center Abigail Lyon, Piscataqua Region Estuaries Partnership Ridgely Mauck, NHDES Alteration of Terrain Bureau Sylvia von Aulock, Southern New Hampshire Regional Planning Commission HYDROLOGIC AND HABITAT MODIFICATION Shane Csiki, NHDES NH Geological Survey Kirsten Howard, NHDES Coastal Program and NH Coastal Adaptation Workgroup Kevin Lucey, NHDES Coastal Program William Thomas, NHDES Dam Bureau LANDSCAPE AND TURF GRASS MANAGEMENT Sherry Godlewski, NHDES Air Resource Division and NH Coastal Adaptation Workgroup Kirsten Howard, NHDES Coastal Program and NH Coastal Adaptation Workgroup Cathy Neal, UNH Cooperative Extension Julia Peterson, NH Sea Grant Extension Jaime Roberge, UNH Cooperative Extension David Rousseau, Division of Pesticide Control, NH Department of Agriculture PARTNERSHIPS Cheryl Bondi, NHDES Aquatic Resource Mitigation Program Jennifer Gornnert, Division of Regulatory Services, NH Department of Agriculture, Markets and Food Erin Holmes, MtBE Remediation Bureau Don Keirstead, USDA, Natural Resources Conservation Service Beth Malcolm, Wastewater Engineering Gail McWilliam Jellie, Division of Agricultural Development, NH Department of Agriculture, Markets and Food Sarah Pillsbury, NHDES Drinking Water and Groundwater Bureau Christian Williams, NHDES Coastal Program Paul Susca, NHDES Drinking Water and Groundwater Bureau ii SUBSURFACE SYSTEMS Robert Tardif, NHDES Subsurface Systems Bureau Eric Thomas, NHDES Subsurface Systems Bureau MINOR NPS POLLUTANT CATEGORIES Kathryn Black, NHDES Planning, Prevention & Assistance Unit Anthony Drouin, NHDES Wastewater Engineering Bureau Carolyn Parry, Marine Patrol Unit, New Hampshire Department of Safety Special thanks to the United States Environmental Protection Agency (EPA) New England Nonpoint Source Program staff and the New Hampshire Department of Environmental Services (NHDES) Watershed Management Bureau staff. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Erik Beck Sandra Fancieullo MaryJo Feuerbach NHDES WATERSHED MANAGEMENT BUREAU Melanie Cofrin Jen Drociak Gregg Comstock Ted Diers Kenneth Edwardson Margaret Foss Stephen Landry Robert Livingston Deborah Loiselle Lisa Loosigian Jeffrey Marcoux Barbara McMillan Dave Neils Kate Politano Tracie Sales Amy Smagula Sally Soule Paul Susca Wendy Waskin Matthew Wood Katherine Zink iii CONTENTS Acknowledgements .................................................................................................................................................... ii Acronyms ................................................................................................................................................................... vi Introduction ................................................................................................................................................................1 Nonpoint Source Management Program Overview ...................................................................................................2 Who Implements the NPS Management Program? ...............................................................................................2 Description of Program Components – EPA Key Components ..............................................................................3 New Hampshire’s Watershed Management Framework ...........................................................................................4 New Hampshire’s Water Quality Standards ...........................................................................................................4 Water Quality Monitoring ......................................................................................................................................5 Surface Water Quality Assessments .......................................................................................................................6 Total Maximum Daily Load (TMDL) Studies ...........................................................................................................8 Watershed-Based Plans ..........................................................................................................................................8 NPS Management Program Evaluation ................................................................................................................... 10 Partnerships ............................................................................................................................................................. 11 Partnerships Goal, Objectives and Milestones ........................................................................................................ 15 Section 319 Program Administration ...................................................................................................................... 18 Program Goal, Objectives and Milestones .............................................................................................................. 20 Priority Watersheds ................................................................................................................................................. 23 Priority Watersheds Goal, Objectives and Milestones ............................................................................................ 31 Priority NPS Pollutant Categories ............................................................................................................................ 35 Minor NPS Pollutant Categories .......................................................................................................................... 35 Marinas and Recreational Boating .................................................................................................................. 35 Residuals Management ................................................................................................................................... 36 Resource Extraction ......................................................................................................................................... 37 Timber Harvesting ........................................................................................................................................... 38 Major NPS Pollutant Categories .......................................................................................................................... 39 Agriculture ....................................................................................................................................................... 39 Agriculture Goal, Objectives and Milestones .................................................................................................. 44 Chlorides and Winter Road Maintenance ....................................................................................................... 47 Chlorides and Winter Road Maintenance Goal, Objectives and Milestones .................................................. 49 Developed Land ............................................................................................................................................... 52 Developed Land Goal, Objectives and Milestones .......................................................................................... 57 Hydrologic and Habitat Modification .............................................................................................................. 65 iv Hydrologic and Habitat Modification Goal, Objectives and Milestones ......................................................... 71 Lawns and Turf Grass Management ................................................................................................................ 75 Lawns and Turf Grass Management Goal, Objectives, and Milestones .......................................................... 79 Subsurface Systems ......................................................................................................................................... 83 Subsurface Systems Goal, Objectives and Milestones .................................................................................... 89 Emerging NPS Issues ................................................................................................................................................ 92 Perfluoroalkyl