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Metedeconk River Watershed Protection and Restoration Plan

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Metedeconk River Watershed Protection and Restoration Plan Metedeconk River Watershed Protection and Restoration Plan May 2013 John S. Truhan Consulting Engineers, Inc. Fundednded byb the New Jersey Department of Environmentalnv Protection Watershed Restorationo Program Acknowledgements Funding for this project was provided by the New Jersey Department of Environmental Protection Watershed Restoration Program Grant No. RP09-058. The completion of this plan would not have been possible without the support and valuable contribution of a large number of individuals and organizations. The following individuals contributed to the completion of the Metedeconk River Watershed Protection and Restoration Plan: Brick Township Municipal Utilities Authority Brick Township Municipal Utilities Authority Board of Commissioners Robert Karl Joseph Maggio, P.E. Brick Township Municipal Utilities Authority Watershed Division CDM Smith Eileen Althouse, P.E. Jennifer Angell Matthew Condiotti, P.E., LEED Green Assoc. Robert Hopper, P.E. Mark Maimone, Ph.D., P.E., D.WRE, BCEE David Mason, P.E., D.WRE Daniel O’Rourke, P.G. Michael Sloop, P.E. Georgian Court University Student assistance with Stream Visual Assessments John S. Truhan Consulting Engineers, Inc. Joseph Malison John S. Truhan, P.E., Fellow ASCE Metedeconk Watershed Stakeholder Advisory Committee See Appendix B for a list of individuals. Metedeconk River Watershed Protection and Restoration Plan Steering Committee Ronald Baker - United States Geological Survey Richard Borys - Commissioner, Jackson MUA; Jackson Environmental Commission Linda Brennen, P.P., AICP – Monmouth County Planning Board Michael DeLuca – Rutgers University IMCS JCNERR Justin Flancbaum – Lakewood Township MUA Stan Hales, Ph.D. – Barnegat Bay National Estuary Program Helen Henderson – American Littoral Society Steve Mars – U.S. Fish and Wildlife Service, NJ Field Office New Jersey Department of Environmental Protection Kyra Hoffmann Robert Mancini (Ret.) Table of Contents Executive Summary Section 1 Introduction ........................................................................................................................................... 1-1 Section 2 Watershed Characterization ............................................................................................................ 2-1 2.1 Physical and Natural Conditions ............................................................................................................. 2-1 2.1.1 Soils ................................................................................................................................................ 2-3 2.2 Demographics ................................................................................................................................................. 2-3 2.3 Flow Characteristics ..................................................................................................................................... 2-4 2.4 Land Use/Land Cover .................................................................................................................................. 2-5 2.5 Zoning Patterns ............................................................................................................................................2-10 2.6 Water Quantity .............................................................................................................................................2-15 2.6.1 Water Use ...........................................................................................................................................2-15 Section 3 Watershed Conditions ........................................................................................................................ 3-1 3.1 Water Quality Conditions ........................................................................................................................... 3-2 3.1.1 Nutrients ............................................................................................................................................... 3-5 3.1.2 Pathogens ............................................................................................................................................. 3-6 3.1.3 Total Suspended Solids ................................................................................................................... 3-6 3.1.4 Toxic Chemicals/VOCs .................................................................................................................... 3-7 3.2 Identified Impairments ............................................................................................................................... 3-8 3.2.1 Total Maximum Daily Loads (TMDLs) ..................................................................................... 3-8 3.2.1.1 In-Stream Fecal Coliform TMDL ................................................................................... 3-8 3.2.1.2 Lakes Fecal Coliform TMDL ............................................................................................ 3-8 3.2.1.3 Total Coliform TMDL ......................................................................................................... 3-9 3.2.1.4 Phosphorus TMDL .............................................................................................................. 3-9 3.2.1.5 Mercury TMDL ..................................................................................................................... 3-9 3.2.2 Water Quality Impairments ........................................................................................................3-10 3.2.2.1 Dissolved Oxygen ..............................................................................................................3-10 3.2.2.2 Arsenic ...................................................................................................................................3-11 3.2.2.3 Temperature .......................................................................................................................3-12 3.2.2.4 Total Suspended Solids (TSS) ......................................................................................3-13 3.2.2.5 Pesticides ..............................................................................................................................3-13 3.2.2.6 Polychlorinated byphenyls (PCBs) ............................................................................3-13 3.2.2.7 Other .......................................................................................................................................3-14 3.3 Visual Assessments .....................................................................................................................................3-14 3.4 Pollutant Sources and Loading Estimates .........................................................................................3-17 3.4.1 Watershed Nitrogen Loading .....................................................................................................3-17 3.4.2 Watershed Phosphorus Loading ..............................................................................................3-18 3.4.3 Total Suspended Solids Loading ...............................................................................................3-19 3.4.4 Pathogens Loading .........................................................................................................................3-20 3.5 Subbasin Analysis (HUC14) .....................................................................................................................3-21 i Document Code Table of Contents Section 4 Identification of Management Strategies .................................................................................... 4-1 4.1 Water Conservation ...................................................................................................................................... 4-5 4.2 Anticipated Load Reductions Required ................................................................................................ 4-8 4.2.1 Total Maximum Daily Loads (TMDLs) ...................................................................................... 4 - 8 4.2.2 Nitrogen, Phosphorus and TSS Load Reduction................................................................... 4-9 4.3 Selection of Management Strategies ................................................................................................... 4-11 4.3.1 Management Strategies ............................................................................................................... 4-12 4.3.2 Fecal Coliform Reduction Strategies ...................................................................................... 4-19 4.3.3 Nutrient (specifically, P&N) Reduction Strategies ........................................................... 4-21 4.3.4 TSS ............................................................................................................................................. 4-23 4.3.5 Specific Conductance .................................................................................................................... 4-25 4.3.6 Lake Management Strategies .................................................................................................... 4-26 Section 5 Implementation Program ................................................................................................................. 5-1 5.1 Priority Watershed Restoration Projects ...........................................................................................
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