DRAFT East Fork Lewis River Water Cleanup Plan Bacteria and Temperature Alternative Restoration Plan By Devan Rostorfer For the Water Quality Program Washington State Department of Ecology Southwest Regional Office Olympia, Washington March 2021, Publication ##-##-## Publication Information This document is available on the Department of Ecology’s website at: https://fortress.wa.gov/ecy/publications/summarypages/XXXXXX.html Cover photo credit Devan Rostorfer, June 2019: East Fork Lewis River watershed. Related Information WRIA: 27 Data for this project is available in Ecology’s EIM Database,1 Study ID: EFLewis_WQP, EFLewisSA, and EFLRTMDL Cross-referenced or relevant documents. Publication 21-10-003: East Fork Lewis River Watershed Bacteria Monitoring and Nonpoint Source Identification Publication 20-10-016: Quality Assurance Project Plan Monitoring Fecal Coliform Bacteria in Western Washington Water Bodies Appendix B3: Southwest Regional Office Sampling Site for 2019 and 2020 Publication 18-03-019: East Fork Lewis River Bacteria and Temperature Source Assessment Report Publication 17-10-006: Quality Assurance Project Plan East Fork Lewis River Fecal Coliform Bacteria and Temperature Source Assessment Publication 05-03-110: Quality Assurance Project Plan East Fork Lewis River Temperature and Fecal Coliform Bacteria Total Maximum Daily Load Study Publication 09-03-002: Streamflow Summary for Gaging Stations on the East Fork Lewis River, 2005-06 Publication 09-03-037: Surface Water/Groundwater Exchange along the East Fork Lewis River (Clark County), 2005 Contact Information Water Quality Program Southwest Regional Office P.O. Box 47600 Olympia, WA 98504-7600 Phone: 360-407-6300 Website2: Washington State Department of Ecology 1 www.ecology.wa.gov/eim 2 www.ecology.wa.gov/contact ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. To request an ADA accommodation, contact Ecology by phone at 360-407-6831 or email at [email protected]@ecy.wa.gov. For Washington Relay Service or TTY call 711 or 877-833-6341. Visit Ecology's website for more information. Department of Ecology’s Regional Offices Map of Counties Served Region Counties served Mailing Address Phone Clallam, Clark, Cowlitz, Grays Harbor, PO Box 47775 Southwest Jefferson, Mason, Lewis, Pacific, Pierce, 360-407-6300 Olympia, WA 98504 Skamania, Thurston, Wahkiakum Island, King, Kitsap, San Juan, Skagit, 3190 160th Ave SE Northwest 425-649-7000 Snohomish, Whatcom Bellevue, WA 98008 Benton, Chelan, Douglas, Kittitas, 1250 W Alder St Central 509-575-2490 Klickitat, Okanogan, Yakima Union Gap, WA 98903 Adams, Asotin, Columbia, Ferry, Franklin, 4601 N Monroe Eastern Garfield, Grant, Lincoln, Pend Oreille, 509-329-3400 Spokane, WA 99205 Spokane, Stevens, Walla Walla, Whitman PO Box 46700 Headquarters Across Washington 360-407-6000 Olympia, WA 98504 Publication XX-XX-XXX DRAFT EFLR Water Cleanup Plan (ARP) Page 5 August 2020 Table of Contents List of Figures and Tables ....................................................................................................................................... 9 Figures ....................................................................................................................................................................... 9 Tables ........................................................................................................................................................................ 9 Acknowledgements ............................................................................................................................................. 13 Executive Summary ............................................................................................................................................. 14 Chapter 1 - Introduction ...................................................................................................................................... 15 State’s polluted waters list ..................................................................................................................................... 16 East Fork Lewis River Water Cleanup Plan and Partnership ................................................................................... 16 East Fork Lewis River Source Assessment ............................................................................................................... 17 Environmental Protection Agency (EPA) Nine minimum element watershed plans ............................................. 18 EPA requirements for Alternative Restoration Plans .............................................................................................. 19 Ecology’s regulatory authority: Water Pollution Control Act (RCW 90.48) ............................................................ 22 Chapter 2 – Impairments and Pollutant Sources .................................................................................................. 24 Watershed summary .............................................................................................................................................. 24 Land use change assessment .................................................................................................................................. 25 Water quality standards ......................................................................................................................................... 26 Source Assessment results...................................................................................................................................... 27 Chapter 3 – Clean Water & NPS Implementation Priorities .................................................................................. 30 Report outline ......................................................................................................................................................... 31 Clean water goals .................................................................................................................................................... 32 Septic Systems ..................................................................................................................................................... 33 Introduction ............................................................................................................................................................ 33 Septic system inspection and maintenance ............................................................................................................ 34 Washington State University Well and Septic Workshops ..................................................................................... 34 Septic system assistance ......................................................................................................................................... 35 Connecting to Sewer ............................................................................................................................................... 36 Pollution Identification and Correction .................................................................................................................. 37 Poop Smart Clark septic systems ............................................................................................................................ 39 Septic system enforcement .................................................................................................................................... 40 Septic system implementation ............................................................................................................................... 40 Implementation actions – septic systems ............................................................................................................... 42 Milestones, targets, and timelines for septic systems ............................................................................................ 43 Publication XX-XX-XXX DRAFT EFLR Water Cleanup Plan (ARP) Page 6 August 2020 Criteria to measure progress on septic systems ..................................................................................................... 44 Funding and partnerships for septic systems ......................................................................................................... 44 Agriculture ........................................................................................................................................................... 46 Introduction ............................................................................................................................................................ 46 Livestock facilities in the East Fork Lewis River ...................................................................................................... 47 Nonpoint source implementation by Department of Ecology ................................................................................ 48 Voluntary Clean Water Guidance for Agriculture ................................................................................................... 50 Agricultural assistance ...........................................................................................................................................