| Title (link to summary) | Number | Date (released or updated) |
|
Quality Assurance Project Plan Addendum: Statewide Survey of Per- and Poly-fluoroalkyl Substances in Washington State Rivers and Lakes
| 18-03-117 | December 2018 |
|
Implementation Memorandum No. 21: Frequently Asked Questions (FAQs) Regarding Vapor Intrusion (VI) and Ecology's 2009 Draft VI Guidance
| 18-09-046 | November 2018 |
|
Quality Assurance Project Plan: Prevalence and Persistence of Cyanotoxins in Lakes of the Puget Sound Basin
| 18-03-115 | September 2018 |
|
Addendum 1 to Quality Assurance Project Plan: Columbia River Basin Local Source Control Monitoring for Toxics: Phase I Screening Study
| 18-03-116 | August 2018 |
|
Standard Operating Procedure for Consumer Product Sample Collection and Processing, Version 2.0
| 18-04-018 | July 2018 |
|
Addendum to Quality Assurance Project Plan: Product Testing Program Version 1.0 — Product Testing Follow-up Study 2018-2019
| 18-03-113 | July 2018 |
|
Yakima Railroad Area PCE Contamination: Groundwater Quality Performance Monitoring Data Summary 2017
| 18-03-027 | July 2018 |
|
Assessment of Arsenic Monitoring Results for the Water Treatment Plant General Permit: September 2016 through August 2017
| 18-10-013 | May 2018 |
|
2018 Bellingham Bay Cleanup Update Info Sheet
| 18-09-168 | April 2018 |
|
Clark County Local Source Control Partnership Monitoring, Findings and Recommendations, 2017
| 18-03-018 | April 2018 |
|
POSTER: Copper in Puget Sound Marinas: the role of antifouling paint
| 18-03-016 | April 2018 |
|
Evaluation of Fish Hatcheries as Sources of PCBs to the Spokane River
| 18-03-014 | April 2018 |
|
Lakewood Plaza Cleaners/Ponders Corner Groundwater Monitoring Results, June 2017 Data Summary report
| 18-03-012 | March 2018 |
|
Freshwater Fish Contaminant Monitoring Program, 2015 Results
| 18-03-011 | March 2018 |
|
Wenatchee River PCB Source Assessment, 2016 and 2017
| 18-03-010 | March 2018 |
|
2018 Bellingham Bay Cleanup Update
| 18-09-166 | February 2018 |
|
Addendum to Quality Assurance Project Plan: Flame Retardants in Ten Washington State Waterbodies
| 18-03-102 | February 2018 |
|
Sediment Quality in Puget Sound, 1989-2015
| 18-03-006 | February 2018 |
|
Sediment Quality in Puget Sound: Changes in chemical contaminants and invertebrate communities at 10 sentinel stations, 1989–2015
| 18-03-005 | February 2018 |
|
Sediment Quality in Puget Sound: Changes in chemistry, toxicity, and benthic invertebrates at multiple geographic scales, 1989–2015
| 18-03-004 | February 2018 |
|
Environmental Effects-Based Concentrations for Total Petroleum Hydrocarbons (TPH): Toxicity in Marine Water and Freshwater
| 18-03-002 | February 2018 |
|
Copper, Zinc, and Lead Concentrations at Five Puget Sound Marinas
| 18-03-001 | January 2018 |