Research & Data - Washington State Department of Ecology

Ecology Water Quality Stormwater Capacity Grants Guidance

Guidance for applying for Ecology Water Quality Stormwater Capacity Grants

https://ecology.wa.gov/stormwater-capacity-grants-prgm-guidance

Ecology Water Quality Stormwater Grants of Regional or Statewide Significance (GROSS) Program Guidance

Guidance for applying for Ecology Water Quality Stormwater Grants of Regional or Statewide Significance (GROSS) grants

https://ecology.wa.gov/stormwater-gross-grants-prgm-guidance

Stipulated stay March 2022

This is a stipulated partial stay from March 2022 for the Nutrient General Permit

https://ecology.wa.gov/stipulated-stay-march-2022

Submittal Crosswalk (WAC 173-201A) 8/01/16

This is the Submittal Crosswalk for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/submittal-crosswalk-wac-173-201a-8-01-16

Summary of WWHM2012 updates

This is a summary of all of the updates to the 2012 model from the WWHM3

https://ecology.wa.gov/summary-of-wwhm2012-updates

Summary Changes Addendum Chapter 173-230

This is a document that summarizes the changes in the rule language to help crosswalk from the old rule language

https://ecology.wa.gov/summarychangesaddendum

Stromwater Manual Handout 4

UIC guidance for the stormwater manual meeting.

https://ecology.wa.gov/swm-4

STEPL (Spreadsheet Tool for the Estimation of Pollutant Load) training

Instructions for estimating load reductions using STEPL (Spreadsheet Tool for the Estimation of Pollutant Load)

https://ecology.wa.gov/stepl-powerpoint-2017

2018 E WA Stormwater Manual Comments Log

Use this document to organize and submit comments on the 2018 draft Stormwater Manual for Eastern Washington

https://ecology.wa.gov/stormwater-manual-e-wa-comment-log-2018

SWMMWW Comment Log

Comment log for submitting SWMMWW comments

https://ecology.wa.gov/stormwater-manual-w-wa-comment-log-2018

Ecology Water Quality Funded Stormwater Projects Construction Completion Form

https://ecology.wa.gov/stormwater-construction-completion-form

Stormcrete Precast Porous Concerte Slabs

Functional equivilancy letter.

https://ecology.wa.gov/stormcrete

StrataCell and StrataVault Functional Equivalencies

Ecology finds the StrataCell and StrataVault systems are functionally equivalent to a bioretention facility when used for treating stormwater.

https://ecology.wa.gov/stratacell

Ecology Water Quality Funded Stormwater Projects Design Deliverables

Design Deliverables guidance for Ecology Water Quality funded Stormwater projects

https://ecology.wa.gov/design-deliverables-for-stormwater-projects

Ecology Water Quality Funded Stormwater Projects Design Deliverables Checklist

Design Deliverables Checklist for stormwater projects funded with Ecology water quality funding.

https://ecology.wa.gov/stormwater-project-design-deliverables-checklist

Ecology Water Quality Funded Stormwater Projects Bid Specification Clauses

https://ecology.wa.gov/stormwater-bid-specification-clauses

Ecology Water Quality Funded Stormwater Projects Bid Insert

https://ecology.wa.gov/stormwater-bid-insert

Supplemental Information for WGHOGA NPDES permit application

Burrowing shrimp document: Supplemental Information for WGHOGA NPDES permit application

https://ecology.wa.gov/supplemental-information-for-wghoga-npdes-permit-a

Stormwater Work Group recommendations for second round effectiveness studies

This letter from the SWG chair outlines the funding recommendations for the second round of effectiveness studies for Stormwater Action Monitoring

https://ecology.wa.gov/swg-esrecommendations06072017

Sand & Gravel General Permit Summary of Changes

Summary of Changes in the Preliminary Draft Sand & Gravel General Permit

https://ecology.wa.gov/summarypreliminarydraftpermitchanges