Process design - voluntary clean water guidance for agricultural activities

Ecology is proposing 3 Alternatives for purposes of public dialogue on the use of bioassessment data for listing in the Water Quality Assessment.

June 2017 Letter to Ecology about Water Quality Assessment Policy 1-11 from Puget Soundkeeper and Spokane Riverkeeper

Preliminary Draft EIS for PCB Variances on the Spokane River. Chapter 173-201A WAC.

Instructions for Puget Sound Nutrient General Permit holders to submit their Annual Reports for Year 1.

Preliminary Draft Implementation Plan for PCB Variances on the Spokane River. Chapter 173-201A WAC.

This is the proposed rule language for WAC 173-201A multiple revisions to WQ Standards

This is the previous Water Treatment Plant General Permit from 2009.

This is the previous Water Treatment Plant General Permit fact sheet from 2009.

Preliminary draft rule language for amendments to chapter 173-201A WAC, for PCB Variances on the Spokane River.

This preliminary draft document provides background and technical information for PCB Variances on the Spokane River. Chapter 173-201A WAC.

This is the Preliminary draft toxics language and toxics table with footnotes at WAC 173-201A-240 for WAC 173-201A Water quality standards for surface waters of the state of Washington.

This is the preliminary draft small business economic impact statement for WAC 173-201A Water quality standards for surface waters of the state of Washington.

This is the preliminary draft rule language for implementation tools at WAC 173-020, 420, 460, and 510(4) for WAC 173-201A Water quality standards for surface waters of the state of Washington.

This is the preliminary draft Implementation Plan to implement rule after it is adopted for WAC 173-201A Water quality standards for surface waters of the state of Washington.

Ecology Water Quality Funded Project Property Purchase Conditions and Guidance

Presentation slides for the workshop on the formal draft Eastern WA Phase II Municipal Stormwater General Permit

This is the preliminary draft language for the 2016-2021 Sand & Gravel general permit.

Presentation slides for the workshop on the formal draft Western Washington Municipal Stormwater general permits

Draft language for the for Sand and Gravel Permit. Includees Process Water, Stormwater, and Mine Dewatering Water Discharges Associated with Sand and Gravel Operations, Rock Quarries, and Similar Mining Facilities, Including Stockpiles of Mined Materials, Concrete Batch Operations and Hot Mix Asphalt Operations.