| Title (link to summary) | Number | Date (released or updated) |
|
The Use of Unamended Soils for Treatment of 6PPDQ in Stormwater: Persistence, Soil Types, and Influence of Vegetation
| 24-10-067 | December 2024 |
|
Focus on: 2025 Industrial Stormwater General Permit
| 24-10-024 | December 2024 |
|
A Performance-Based Approach for Developing Site-Specific Natural Conditions Criteria for Aquatic Life in Washington
| 25-10-001 | November 2024 |
|
Focus On: Water Quality Assessment 2022
| 24-10-068 | November 2024 |
|
WAC 173-201A-240, Toxic Substances Human Health Criteria Rulemaking: Environmental Justice Assessment
| 24-10-066 | November 2024 |
|
Rule Implementation Plan WAC 173-201A-240, Toxic Substances: Human Health Criteria
| 24-10-065 | November 2024 |
|
Concise Explanatory Statement: WAC 173-201A-240, Toxic Substances – Human Health Criteria
| 24-10-064 | November 2024 |
|
Small Business Economic Impact Analysis: Zostera japonica Management on Commercial Clam Beds in Willapa Bay General Permit
| 24-10-061 | November 2024 |
|
Concise Explanatory Statement, Chapter 173-201A WAC, Water Quality Standards for Surface Waters of the State of Washington – Natural Conditions: Summary of rulemaking and response to comments
| 24-10-057 | November 2024 |
|
Focus on: Controlling Zostera japonica on clam beds in Willapa Bay
| 24-10-056 | November 2024 |
|
Washington’s Clean Water State Revolving Fund (CWSRF) Annual Report
| 24-10-055 | November 2024 |
|
Final Regulatory Analyses for Chapter 173-201A WAC, Water Quality Standards for Surface Waters of the State of Washington
| 24-10-053 | November 2024 |
|
Rule Implementation Plan, Chapter 173-201A WAC, Water Quality Standards for Surface Waters of the State of Washington: Natural Conditions Criteria
| 24-10-052 | November 2024 |
|
Updates to Natural Conditions Provision in Chapter 173-201A WAC: Technical Support Document
| 24-10-051 | November 2024 |
|
Technical Guidance Manual for Evaluating Emerging Stormwater Treatment Technologies: Technology Assessment Protocol - Ecology (TAPE)
| 18-10-038 | November 2024 |
|
State Fiscal Year 2026 Aquatic Invasive Plant Funding Grant Guidelines
| 24-10-063 | October 2024 |
|
State Fiscal Year 2026 Freshwater Algae Grant Funding Guidelines
| 24-10-062 | October 2024 |
|
Puget Sound Nutrient General Permit Focus on Financial Capability Assessment: Questions and Comments on the FCA Guidance & Tool
| 24-10-060 | October 2024 |
|
Hangman Settlement Agreement 2023 Annual Report
| 24-10-058 | October 2024 |
|
Water Quality Program draft loan offer to the City of Lynden, Environmental Justice Assessment
| 24-10-040 | October 2024 |
|
Final Treatment Plant Financial Capability Assessment Guidance Puget Sound Nutrient General Permit
| 24-10-034 | October 2024 |
|
Report to the Legislature on Water Power License Fees
| 24-10-020 | October 2024 |
|
Focus on: Human Health Criteria 2024 Rule
| 24-10-054 | September 2024 |
|
Guidance on using new high performance bioretention soil mixes
| 21-10-023 | September 2024 |
|
Technology Assessment Protocol-Ecology (TAPE) Process Overview
| 18-10-039 | September 2024 |
|
State Environmental Review Process Environmental Information Document: Guidance for Clean Water State Revolving Fund Agreements
| 16-10-003 | September 2024 |
|
Lower Columbia Urban Streams Monitoring Annual Status Report (2022-2023)
| 24-10-050 | August 2024 |
|
State Fiscal Year 2026 Funding Guidelines Water Quality Combined Funding Program
| 24-10-048 | August 2024 |
|
Spring Flat Creek Straight to Implementation Strategy
| 24-10-046 | August 2024 |
|
Final Regulatory Analyses for Chapter 173-201A WAC, Water Quality Standards for Surface Waters of the State of Washington
| 24-10-033 | August 2024 |
|
Aquatic Life Toxics Criteria Rulemaking Concise Explanatory Statement Chapter 173-201A WAC
| 24-10-032 | August 2024 |
|
Aquatic Life Toxics Criteria Rulemaking Rule Implementation Plan
| 24-10-031 | August 2024 |
|
Aquatic Life Toxics Criteria Rulemaking Technical Support Document
| 24-10-030 | August 2024 |
|
Focus On: French Creek Orange Water Study
| 24-10-021 | August 2024 |
|
Testing 6PPD-quinone on the Snoqualmie Reservation: Quality Assurance Project Plan
| 24-10-049 | July 2024 |
|
Focus on municipal stormwater and 6PPD
| 24-10-045 | July 2024 |
|
Year 2023 Report on Activities to Implement Washington State’s Water Quality Plan to Control Nonpoint Source Pollution.
| 24-10-029 | July 2024 |
|
2024 Stormwater Management Manual for Eastern Washington
| 24-10-014 | July 2024 |
|
2024 Stormwater Management Manual for Western Washington
| 24-10-013 | July 2024 |
|
State Fiscal Year 2025 Final Water Quality Funding Offer List and Intended Use Plan
| 24-10-036 | June 2024 |
|
Stormwater Management Action Planning Guidance
| 24-10-027 | June 2024 |
|
Cultural Resources Review
| 24-10-028 | May 2024 |
|
Small Business Economic Impact Analysis for Industrial Stormwater General Permit; National Pollutant Discharge Elimination System and State Waste Discharge General Permit
| 24-10-026 | May 2024 |
|
Water Treatment Plant Focus Sheet
| 24-10-025 | May 2024 |
|
Wastewater and Stormwater Permit Fee Report 2022-2023
| 24-10-023 | May 2024 |
|
Preliminary Regulatory Analyses for Chapter 173-201A, Water Quality Standards for Surface Waters of the State of Washington
| 24-10-022 | May 2024 |
|
Focus on: Natural conditions in water quality standards
| 24-10-019 | May 2024 |
|
A Performance-Based Approach for Developing Site-Specific Natural Conditions Criteria for Aquatic Life in Washington
| 24-10-017 | May 2024 |
|
Rule Implementation Plan, Chapter 173-201A WAC, Water Quality Standards for Surface Waters of the State of Washington: Natural Conditions Criteria
| 24-10-016 | May 2024 |
|
Proposed Updates to Natural Conditions Provision in Chapter 173-201A WAC: Technical Support Document
| 24-10-015 | May 2024 |
|
Small Business Economic Impact Analysis for Draft Water Treatment Plant General Permit; National Pollutant Discharge Elimination System and State Waste Discharge General Permit
| 24-10-018 | March 2024 |
|
Standard Operating Procedure for Calculating Pollutant Loads for Stormwater Discharges v 1.1
| 18-10-026 | March 2024 |
|
Standard Operating Procedure for Collection of Stormwater Solids Using In-Line Traps v 2.0
| 18-10-025 | March 2024 |
|
Standard Operating Procedure for Automatic Sampling for Stormwater Monitoring v 1.1
| 18-10-024 | March 2024 |
|
Standard Operating Procedure for Collecting Grab Samples from Stormwater Discharges v 1.1
| 18-10-023 | March 2024 |
|
Focus on: Statewide Effluent Characterzation Concrete Manufacturing and Recycling
| 24-10-012 | February 2024 |
|
Direct Implementation Fund 2024 Funding Guidelines
| 24-10-011 | February 2024 |
|
Investigation of Discharge from Water Treatment Plant Filter Backwash
| 24-10-010 | February 2024 |
|
Preliminary Regulatory Analyses for Chapter 173-201A WAC, Water Quality Standards for Surface Waters of the State of Washington
| 24-10-009 | February 2024 |
|
Aquatic Life Toxics Criteria Rulemaking Draft Rule Implementation Plan
| 24-10-008 | February 2024 |
|
Aquatic Life Toxics Criteria Rulemaking Technical Support Document
| 24-10-007 | February 2024 |
|
Clean Water State Revolving Fund Emergency Funding Program Guidelines
| 24-10-006 | February 2024 |
|
Focus on: Aquatic Life and Toxic Substances
| 23-10-040 | February 2024 |
|
Puget Sound Nutrient Reduction Grant Program Applicant Prep Tool
| 21-10-041 | February 2024 |
|
Public Notice: Issuance of General Permit for Water Treatment Plants
| 04-10-045 | February 2024 |
|
State Fiscal Year 2025 Draft Water Quality Funding offer list and Intended Use Plan
| 24-10-004 | January 2024 |
|
Small Business Economic Impact Analysis for Draft Winery General Permit; State Waste Discharge General Permit for Discharges from Winemaking Facilities
| 24-10-003 | January 2024 |
|
Concrete Manufacturing and/or Recycling: Statewide Effluent Characterization
| 24-10-001 | January 2024 |
|
Focus On: Vessel Deconstruction
| 18-10-045 | January 2024 |
|
Guidance Manual: Using NEWLLqq.xlsm to Develop Local Discharge Limitations
| 10-10-063 | January 2024 |
|
Water Quality Standards for Surface Waters of the State of Washington, Chapter 173-201A WAC
| 06-10-091 | January 2024 |