Title (link to summary) | Number | Date (released or updated) |
Addendum 3 to Quality Assurance Monitoring Plan: Long-Term Marine Waters Monitoring, Water Column Program
| 23-03-118 | December 2023 |
Better Brakes Enforcement Study, 2022
| 23-03-028 | December 2023 |
Quality Assurance Project Plan: Monitoring of Tire Contaminants in Coho Salmon Watersheds
| 23-03-113 | November 2023 |
Prevalence and Persistence of Cyanotoxins in Lakes of the Puget Sound Basin: Cyanotoxin production in Spanaway Lake (Pierce County, Washington) during the summer of 2021
| 23-03-027 | November 2023 |
School Supplies 2023: Addendum 1 to Quality Assurance Project Plan: Lead and Cadmium in School Supplies, 2021
| 23-03-117 | September 2023 |
Quality Assurance Project Plan: Per- and Polyfluoroalkyl Substances in Freshwater Fish of Ten Lakes, 2023
| 23-03-116 | September 2023 |
Final Regulatory Analyses for Chapter 173-50 WAC, Accreditation of Environmental Labs
| 23-03-026 | September 2023 |
Rule Implementation Plan Chapter 173-50 WAC, Accreditation of Environmental Laboratories
| 23-03-025 | September 2023 |
Concise Explanatory Statement for Chapter 173-50 WAC, Accreditation of Environmental Laboratories
| 23-03-024 | September 2023 |
Puget Sound Dissolved Oxygen Model Nutrient Load Summary for 1999-2008
| 11-03-057 | September 2023 |
South Puget Sound Dissolved Oxygen Study: Interim Nutrient Load Summary for 2006-2007
| 11-03-001 | September 2023 |
Quality Assurance Project Plan: Soos Creek Temperature, Dissolved Oxygen, and Bacteria TMDL Study
| 23-03-105 | August 2023 |
Addendum: Puget Sound Nutrient Monitoring Project to Quality Assurance Monitoring Plan: Statewide River and Stream Ambient Water Quality Monitoring
| 23-03-102 | August 2023 |
Standard Operating Procedure EAP099, Version 1.2: Collecting Groundwater Samples: Purging and Sampling Monitoring Wells for General Chemistry Parameters
| 23-03-209 | July 2023 |
Standard Operating Procedure EAP038, Version 1.4, Collection of Freshwater Sediment Core Samples Using a Box or KB Corer
| 23-03-208 | July 2023 |
Assessment of Toxic Chemicals in Children’s Products, 2019
| 23-03-016 | July 2023 |
Flame Retardants in Electric and Electronic Casings, 2021
| 23-03-015 | July 2023 |
Methylmercury in Freshwater Fish, 2020 Comparison Study
| 23-03-011 | July 2023 |
Standard Operating Procedures EAP025, Version 2.4, Seawater Sampling
| 23-03-207 | June 2023 |
Standard Operating Procedure EAP052, Version 1.4, Manual Well-Depth and Depth-to-Water Measurements
| 23-03-204 | June 2023 |
Quality Assurance Project Plan: Hylebos Waterway Crab Tissue Study, Occidental Chemical Corporation
| 23-03-115 | June 2023 |
Quality Assurance Project Plan: Monitoring Persistent, Bioaccumulative, and Toxic Chemicals (PBTs) Using Age-Dated Lake Sediment Cores: 2023-2027
| 23-03-114 | June 2023 |
Quality Assurance Project Plan: Aquatic Plant Monitoring in Washington State Lakes, Rivers, and Streams
| 23-03-112 | June 2023 |
Laboratory Accreditation: Prepare for the Next Renewal
| 23-03-019 | June 2023 |
Measuring Mercury Trends in Freshwater Fish in Washington State: 2017-2019 Sampling Results
| 23-03-014 | June 2023 |
Okanogan River Watershed: Freshwater Fish Contaminant Monitoring Program, 2017 Results
| 23-03-013 | June 2023 |
Black Lake Grocery Groundwater Monitoring Results, October 2021: Data Summary Report
| 23-03-023 | May 2023 |
Shelton Laundry and Cleaners Groundwater Monitoring Results, October 2021: Data Summary Report
| 23-03-022 | May 2023 |
Focus on: Soos Creek Temperature, Dissolved Oxygen, and Bacteria Study
| 23-03-018 | May 2023 |
Yakima Railroad Area PCE Contamination: Groundwater Quality Monitoring, 2021
| 23-03-012 | May 2023 |
Standard Operating Procedure EAP070, Version 2.3, Minimize the Spread of Invasive Species
| 23-03-225 | April 2023 |
Standard Operating Procedure EAP039, Version 1.4, Obtaining Marine Sediment Samples
| 23-03-205 | April 2023 |
Quality Assurance Monitoring Plan: Statewide River and Stream Ambient Water Quality Monitoring, 2023 revision
| 23-03-106 | April 2023 |
Eyes Over Puget Sound: Decade in Review — 2023
| 23-03-070 | April 2023 |
Focus on: Monitoring 6PPD-q in the environment
| 23-03-017 | April 2023 |
Preliminary Regulatory Analyses for Chapter 173-50 WAC, Accreditation of Environmental Labs
| 23-03-010 | April 2023 |
Addendum to Quality Assurance Project Plan: Assessing Sources of Toxic Chemicals Impacting Juvenile Chinook Salmon
| 23-03-111 | March 2023 |
Addendum 3 to Quality Assurance Project Plan: Freshwater Fish Contaminant Monitoring Program 2023, Spokane River
| 23-03-110 | March 2023 |
Quality Assurance Monitoring Plan: The 2023-2028 Puget Sound Sediment Monitoring Program
| 23-03-104 | March 2023 |
Results of Validation Exercise for Marine Benthic Index
| 23-03-009 | March 2023 |
PCBs in State Purchased Products – Vehicle and Ferry Lubricants 2017
| 23-03-006 | March 2023 |
Standard Operating Procedure EAP009, Version 1.3, Field Collection, Processing, and Preservation of Finfish Samples at the Time of Collection in the Field
| 23-03-202 | February 2023 |
Standard Operating Procedure PTP005, Version 1.1, Thermo Scientific Nicolet iS5 FTIR Spectrometer
| 23-03-201 | February 2023 |
Addendum 2 to Quality Assurance Monitoring Plan: Long-Term Marine Waters Monitoring, Water Column Program
| 23-03-109 | February 2023 |
Addendum to Quality Assurance Monitoring Plan: Statewide River and Stream Ambient Water Quality Monitoring, Selected Toxics in the Upper Green River Watershed
| 23-03-101 | February 2023 |
Focus on: Watershed Health Monitoring 2023
| 23-03-008 | February 2023 |
PFAS in Washington State Products, 2018
| 23-03-007 | February 2023 |
Standard Operating Procedure EAP088, Version 1.1 Marine Waters Data Quality Assurance and Quality Control
| 23-03-233 | January 2023 |
Standard Operating Procedure EAP043, Version 1.4 Marine Macrobenthic Sample Analysis
| 23-03-232 | January 2023 |
Writing Standard Operating Procedures, A Guide for Small Waste Water Treatment Plant Operators
| 23-03-203 | January 2023 |
Addendum to Quality Assurance Project Plan: Toxic Chemicals in Cosmetics: Phthalates and Asbestos
| 23-03-108 | January 2023 |
Quality Assurance Project Plan: Flame Retardants in Fabrics of Children’s Play Tents and Other Products
| 23-03-107 | January 2023 |
Quality Assurance Project Plan: White Salmon Watershed Bacteria Assessment
| 23-03-103 | January 2023 |
Cadmium and Other Metals in Children’s Jewelry 2018, Follow-up Study
| 23-03-004 | January 2023 |
PCBs in State Purchased Products, Fabrics 2017
| 23-03-001 | January 2023 |