This page is the tabbed index for technical, legal, and code references
PFAS
6PPDq
Salmon
Reports
Reference
RCW
WAC
ECDC
What are PFAS?
- Concerns over “forever chemicals” pose biosolids challenge for treatment plants 02/13/2026
- Visualization and Modeling of Groundwater Pollution 12/21/2025
- Per- and Polyfluoroalkyl Substances (PFAS) in Urban Stormwater Runoff: Insights from a Roadside Rain Garden 12/11/2025
- Federal Government Human Health PFAS Research Workshop: Proceedings of a Workshop—in Brief (2021) 08/24/2025
- News Release – State proposes restrictions on toxic “forever chemicals” in common consumer products 06/04/2025
- PFAS Explained 05/25/2025
- King County detects PFAS in wastewater, fertilizer program 05/03/2025
- The truth about American drinking water: Report shows widespread presence of hazardous chemicals 02/25/2025
- The E.P.A. Promotes Toxic Fertilizer. 3M Told It of Risks Years Ago. 12/27/2024
- From tires to nail polish, we’re studying a new round of consumer products with toxic chemicals 11/07/2024
- How can I get ‘forever chemicals’ out of my life? 10/13/2024
- PFAS and Aquatic Life 10/01/2024
- New rulemaking aims to reduce “forever chemicals” in consumer products 09/18/2024
- These common chemicals could affect your health all over your body, expert says 09/09/2024
- State sets new limits for toxic chemicals in water 08/15/2024
- Lawyers to Plastics Makers: Prepare for ‘Astronomical’ PFAS Lawsuits 05/28/2024
- Final PFAS National Primary Drinking Water Regulation 05/22/2024
- Local drinking water ranks among the best, exceeding new federal standards for contaminants 05/16/2024
- Key EPA Actions to Address PFAS 05/07/2024
- EPA designates 2 forever chemicals as hazardous substances, eligible for Superfund cleanup 04/19/2024
- Final PFAS National Primary Drinking Water Regulation 04/10/2024
- Washington will move to tougher federal limits on ‘forever chemicals’ in tap water 04/10/2024
- Biden-Harris Administration Finalizes First-Ever National Drinking Water Standard to Protect 100M People from PFAS Pollution 04/10/2024
- WA’s public water systems would need $1.6 billion for initial PFAS cleanup, state officials say 04/10/2024
- FINAL APPENDIX: Human Health Toxicity Assessment for Perfluorooctane Sulfonic Acid (PFOS) and Related Salts 04/05/2024
- Per- and Polyfluoroalkyl Substances (PFAS) 04/05/2024
- Maximum Contaminant Level Goals for Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS) in Drinking Water 04/05/2024
- Human Health Toxicity Assessment for Perfluorooctanic Acid (PFOA) and Related Salts 04/05/2024
- Revised Final Results of Supplemental Stormwater Monitoring for PFAS 02/13/2024
- United States Analysis of the Regulatory Inception of Per- and Polyfluoroalkyl Substances(PFAS) in Drinking Water Policy among States and Review of Regulatory Efforts made by the Federal Environmental Protection Agency 12/08/2023
- Analytical Report – Prepared for Olympic View Water & Sewer District 07/21/2023
- Guidance for Investigating and Remediating PFAS Contamination in Washington State 06/01/2023
- How PFAS impact stormwater 04/14/2023
- Watershed Protection Plan – Olympic View Water & Sewer District 04/07/2023
- Survey of PFAS in the Greater Lake Washington Watershed 10/04/2022
- Per- and Polyfluoroalkyl Substances Chemical Action Plan 09/01/2022
- Department of Ecology – Our Committees, Boards, and Workgroups 11/09/2021
- Recommended State Action Levels for Per- and Polyfluoroalkyl Substances (PFAS) in Drinking Water: Approach, Methods, and Supporting Information 11/01/2021
- Groundwater Flow and PFAS Transport Modeling Report Issaquah, Washington 09/13/2021
- Per- and Polyfluoroalkyl Substances (PFAS) Additional Characterization Study Summary Report 04/14/2021
- Loading, transport, and treatment of emerging chemical and biological contaminants of concern in stormwater 03/02/2021
- Minimizing the environmental impact of PFAS by using specialized coagulants for the treatment of PFAS polluted waters and for the decontamination of firefighting equipment 02/22/2021
- Per – and Polyfluoroalkyl Substances Characterization Study Work Plan Addendum 04/03/2020
What is 6ppd-quinone?
- 6PPD Update – January 2026 02/01/2026
- Report reveals how urban runoff continues to threaten coho salmon health 01/28/2026
- Roadway Runoff Induced Acute Mortality in Juvenile Coho Salmon During Spring Storm Events 01/12/2026
- Study finds juvenile coho salmon at risk from deadly tire chemical 01/12/2026
- Reader view: Dead coho in Shellabarger Creek — was stormwater runoff to blame? 12/08/2025
- New Test Measures Toxin from Tires in Marine Life, Helping Understand Risk to Marine Species and Ecosystems 09/19/2025
- Edmonds Waterfront Center Environmental Series Sept. 11: ‘Caring About Our Roads, Car Tires and Coho Salmon’ 08/31/2025
- Stormwater & residential pollution 05/27/2025
- What is 6PPD-quinone? 05/25/2025
- Scientists discover ‘potential breakthrough’ in protecting salmon from urban killer 03/28/2025
- Why are so many Coho salmon dying? The answer might be in your tires 11/20/2024
- From tires to nail polish, we’re studying a new round of consumer products with toxic chemicals 11/07/2024
- 6PPD Action Plan and Alternatives Assessment – Progress Report and Recommendations 10/29/2024
- ITRC Publishes New 6PPD Guidance 09/30/2024
- King County’s Approach to Addressing 6PPD-q 07/10/2024
- Tire anti-degradant (6PPD) and 6PPD-quinone (6PPDQ) 01/02/2024
- Saving Washington’s salmon from toxic tire dust 01/25/2023
- Department of Ecology – Our Committees, Boards, and Workgroups 11/09/2021
Reports concerning salmon recovery related topics
- Reader view: Dead coho in Shellabarger Creek — was stormwater runoff to blame? 12/08/2025
- U.S. Rep. Larsen briefed on federal funding cuts threatening Sound Salmon Solutions operations 06/30/2025
- Edmonds Stream Inventory and Assessment 05/16/2025
- Juvenile salmonids traverse coastal meta-nurseries that connect rivers via the sea 04/30/2025
- Baby salmon head out to sea. Then they do something unexpected, new research shows 04/30/2025
- Washington Lawmakers Introduce Bill To Ask DC For Marine Mammal Act Modifications 02/04/2025
- Saving Washington’s salmon from toxic tire dust 01/25/2023
Reports supporting EEC projects
- Roadway Runoff Induced Acute Mortality in Juvenile Coho Salmon During Spring Storm Events 01/12/2026
- Edmonds Stream Inventory and Assessment 05/16/2025
- From tires to nail polish, we’re studying a new round of consumer products with toxic chemicals 11/07/2024
- PFAS and Aquatic Life 10/01/2024
- ITRC Publishes New 6PPD Guidance 09/30/2024
- These common chemicals could affect your health all over your body, expert says 09/09/2024
- King County’s Approach to Addressing 6PPD-q 07/10/2024
- Final PFAS National Primary Drinking Water Regulation 05/22/2024
- Key EPA Actions to Address PFAS 05/07/2024
- FINAL APPENDIX: Human Health Toxicity Assessment for Perfluorooctane Sulfonic Acid (PFOS) and Related Salts 04/05/2024
- Per- and Polyfluoroalkyl Substances (PFAS) 04/05/2024
- Maximum Contaminant Level Goals for Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS) in Drinking Water 04/05/2024
- Revised Final Results of Supplemental Stormwater Monitoring for PFAS 02/13/2024
- United States Analysis of the Regulatory Inception of Per- and Polyfluoroalkyl Substances(PFAS) in Drinking Water Policy among States and Review of Regulatory Efforts made by the Federal Environmental Protection Agency 12/08/2023
- Analytical Report – Prepared for Olympic View Water & Sewer District 07/21/2023
- How PFAS impact stormwater 04/14/2023
- Watershed Protection Plan – Olympic View Water & Sewer District 04/07/2023
- Saving Washington’s salmon from toxic tire dust 01/25/2023
- Data Gaps Investigation Workplan Addendum 1 – Hydrogeological Characterization Well Installation 11/01/2022
- Survey of PFAS in the Greater Lake Washington Watershed 10/04/2022
- Understanding blue carbon 09/29/2022
- Per- and Polyfluoroalkyl Substances Data Gap Investigation Work Plan Lower Issaquah Valley 07/15/2022
- Focus on: PFAS Cleanup Levels 07/01/2022
- A review on emerging water contaminants and the application of sustainable removal technologies 05/27/2022
- Pharmaceutical wastewater as Emerging Contaminants (EC): Treatment technologies, impact on environment and human health 04/25/2022
- Recommended State Action Levels for Per- and Polyfluoroalkyl Substances (PFAS) in Drinking Water: Approach, Methods, and Supporting Information 11/01/2021
- Groundwater Flow and PFAS Transport Modeling Report Issaquah, Washington 09/13/2021
- Per- and Polyfluoroalkyl Substances (PFAS) Additional Characterization Study Summary Report 04/14/2021
- Loading, transport, and treatment of emerging chemical and biological contaminants of concern in stormwater 03/02/2021
- Critical Aquifer Recharge Areas Guidance 03/01/2021
- Minimizing the environmental impact of PFAS by using specialized coagulants for the treatment of PFAS polluted waters and for the decontamination of firefighting equipment 02/22/2021
- Per – and Polyfluoroalkyl Substances Characterization Study Work Plan Addendum 04/03/2020
- Olympic View Water and Sewer District Wellhead Protection Area Delineation Deer Creek Springs and 228th St. Wellfield 08/01/2018
- Letter responding to PGG letter of findings 06/08/2018
- Madrona School Stormwater Management System Assessment 06/01/2018
- Deer Creek Water Supply Protection Plan 01/01/2002
Reference information supporting EEC Projects
- Roadway Runoff Induced Acute Mortality in Juvenile Coho Salmon During Spring Storm Events 01/12/2026
- Study finds juvenile coho salmon at risk from deadly tire chemical 01/12/2026
- Per- and Polyfluoroalkyl Substances (PFAS) in Urban Stormwater Runoff: Insights from a Roadside Rain Garden 12/11/2025
- Federal Government Human Health PFAS Research Workshop: Proceedings of a Workshop—in Brief (2021) 08/24/2025
- Wetlands through the seasons 07/24/2025
- Notice of Intent to sue Edmonds School District over PFAS contaminated stormwater being injected into Deer Creek Springs Aquifer 05/28/2025
- Press Release – Olympic View Water and Sewer District Issues Intent to Sue Edmonds School District Over PFAS Pollution at Madrona School 05/28/2025
- Stormwater & residential pollution 05/27/2025
- PFAS Information 05/26/2025
- What is 6PPD-quinone? 05/25/2025
- PFAS Explained 05/25/2025
- Model Toxics Control Act 07/09/2024
- Final PFAS National Primary Drinking Water Regulation 05/22/2024
- Perrinville Creek SEPA DNS – Bernhoft- PLN2024-0020 SEPA DNS 05/14/2024
- EPA designates 2 forever chemicals as hazardous substances, eligible for Superfund cleanup 04/19/2024
- Final PFAS National Primary Drinking Water Regulation 04/10/2024
- Per- and Polyfluoroalkyl Substances (PFAS) 04/05/2024
- Human Health Toxicity Assessment for Perfluorooctanic Acid (PFOA) and Related Salts 04/05/2024
- Tire anti-degradant (6PPD) and 6PPD-quinone (6PPDQ) 01/02/2024
- Guidance for Investigating and Remediating PFAS Contamination in Washington State 06/01/2023
- Understanding blue carbon 09/29/2022
- Per- and Polyfluoroalkyl Substances Chemical Action Plan 09/01/2022
- Department of Ecology – Our Committees, Boards, and Workgroups 11/09/2021
- Bittersweet Nightshade 06/01/2018
- Wellhead Protection Program Guidance Document 01/25/2017
- Purple Loosestrife 01/09/2011
- Regulatory Takings and Land Use Regulation: 07/25/2006
- Wellhead Protection Programs – Tools for Local Governments 04/04/1989
| Title.Chapter.Section | Revised Code of Washington (RCW) |
|---|---|
| RCW 77.57.030 | Fishways required in dams, obstructions—Penalties, remedies for failure. |
| RCW 36.70A.020 (9) | Planning Goals – Open space and recreation. Retain open space and green space, enhance recreational opportunities, enhance fish and wildlife habitat, increase access to natural resource lands and water, and develop parks and recreation facilities. |
| RCW 36.70A.020 (10) | Planning Goals – Environment. Protect and enhance the environment and enhance the state’s high quality of life, including air and water quality, and the availability of water. |
| RCW 36.70A.070 (1) | Comprehensive plans—Mandatory elements. |
| RCW 17.10 | Noxious weeds |
| RCW 77.115.320 | Unlawful failure to provide, maintain, or operate fishway for dam or other obstruction—Penalty. (1) A person is guilty of unlawful failure to provide, maintain, or operate a fishway for dam or other obstruction if the person owns, operates, or controls a dam or other obstruction to fish passage on a river or stream and: (a) The dam or obstruction is not provided with a durable and efficient fishway approved by the director as required by RCW 77.57.030; (b) Fails to maintain a fishway in efficient operating condition; or (c) Fails to continuously supply a fishway with a sufficient supply of water to allow the free passage of fish. (2) Unlawful failure to provide, maintain, or operate a fishway for dam or other obstruction is a gross misdemeanor. Following written notification to the person from the department that there is a violation, each day of unlawful failure to provide, maintain, or operate a fishway is a separate offense. |
| Title-Chapter-Section | Washington Administrative Codes (WAC) |
|---|---|
| WAC 365-196-485(4) | Avoiding impacts through appropriate land use designations. |
| WAC 365-195-915 | Criteria for including the best available science in developing policies and development regulations. |
| WAC 365-196-485(1)(c) | Counties and cities are required to identify open space corridors within and between urban growth areas for multiple purposes, including those areas needed as critical habitat by wildlife. |
| WAC 365-196-485(1)(e) | Because the critical areas regulations must be consistent with the comprehensive plan, each comprehensive plan should set forth the underlying policies for the jurisdiction’s critical areas program. |
| WAC 246-290-135 | Source water protection. |
| WAC 246-290-668 | Watershed control. |
| WAC 246-290-690 | Criteria to remain unfiltered. |
| WAC 173-340 | MODEL TOXICS CONTROL ACT CLEANUP REGULATIONS |
| ECDC | Edmonds Community Development Codes |
|---|---|
| Chapter | |
| ECDC 23.10 | Tree Related Regulations |
| ECDC 23.40 | Environmentally Critical Areas General Protections |
| ▶︎ 23.40.020 (A) | Relationship to other regulations: “These critical areas regulations shall apply as an overlay and in addition to zoning, site development, stormwater management, building and other regulations adopted by the city of Edmonds.” |
| ▶︎ 23.40.020 (B) | B. Any individual critical area adjoined or overlain by another type of critical area shall have the buffer and meet the requirements that provide the most protection to the critical areas involved. When any provision of this title or any existing land use regulation conflicts with this title, that which provides more protection to the critical area shall apply. |
| ECDC 23.50 | Wetlands |
| ECDC 23.60 | Critical Aquifer Recharge Areas |
| ▶︎ 23.60.010 | CARA – Scope |
| ▶︎ 23.60.020 | CARA – Administration |
| ▶︎ 23.60.030 | CARA – Regulated Activities |
| ECDC 23.70 | Frequently Flooded Areas |
| ECDC 23.80 | Geologically Hazardous Areas |
| ECDC 23.90 | Fish and Wildlife Habitat Conservation Areas |