Publications & Forms

Title (link to summary)	Number	Date (released or updated)
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 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 for Developing Local Discharge Limits	11-10-056	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

Ecology Publications & Forms

Water Quality (1636 publications 1985-2024)