Regulations & Permits - Washington State Department of Ecology

Spreadsheet of TEC & DWEC

This spreadsheet includes the proposed revisions to policy 1-11 assessment of tissue and water data for human health

https://ecology.wa.gov/spreadsheet-of-tec-dwec

Spokane River Stewardship Partners Policy 1-11 comment letter

2017 Spokane River Stewardship Partners comment letter on WQ Assessment Policy 1-11 updates

https://ecology.wa.gov/srspcomment_hhc_3-15-2017

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

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

Ecology Water Quality Funded Facility Projects Standard Contract Clauses

https://ecology.wa.gov/standard-contract-clauses

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

Splash Boxx Functional Equivalency

Ecology finds Splash Boxx treatment system is functionally equivalent to a Bioretention Facility (rain garden) when using approved Bioretention Soil Media for stormwater management and must adhere to the guidelines for Bioretention areas found in Best Management Practice T7.30.

https://ecology.wa.gov/splash-boxx

Guidance for demonstrating compliance with water quality standards when using Splash Boxx using the Western Washington Hydrology Model.

PowerPoint report gives the procedure for demonstrating compliance with water quality standards when using Splash Boxx for stormwater management using the Western Washington Hydrology Model.

https://ecology.wa.gov/splashboxxguidence

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