Regulations & Permits - Washington State Department of Ecology

A User's Guide to Compost

The Beauty of Your Lawn & Garden Blossoms from the Soil

https://ecology.wa.gov/compostusersguide

Ecology Water Quality Funded Facility Projects Cost and Effectiveness Analysis Guidance and Certification Form

Form for Cost and Effectiveness Analysis Guidance and Certification, for Water Quality Funded Facility Projects

https://ecology.wa.gov/cost-and-effectiveness-analysis

Ecology Listening Session: Implementation Memo No. 22 - Vapor Intrusion Investigations and Short-term Trichloroethene Toxicity

This presentation was for the December 17, 2018 Ecology Listening Session in Bellevue, Washington. Ecology gathered feedback on the Implementation Memo No. 22.

https://ecology.wa.gov/december-2018-listening-session-ppt-vi-and-tce

Ecology Water Quality Funded Facility Projects Cost and Effectiveness Analysis Certification Form

https://ecology.wa.gov/cost-and-effectiveness-analysis-certification-form

Collection Events under the E-Cycle Washington Program

This document answers frequently asked questions regarding collection events for the E-Cycle Washington program.

https://ecology.wa.gov/collectioneventsfaq12-09-08

Ecology Water Quality Funded Facility Projects Specification Insert

For Ecology Water Quality Funded Facility Projects, this is the Specification Insert

https://ecology.wa.gov/cwsrf-specification-insert

Ecology Water Quality Funded Facility Projects Specification Insert for Pre Selection Contracts

https://ecology.wa.gov/cwsrf-specification-insert-for-pre-selection-contr

Ecology Water Quality Funded Facility Projects Specification Insert for Service Contracts

https://ecology.wa.gov/cwsrf-specification-insert-for-service-contracts

Ecology Water Quality Funded Facility Projects Davis Bacon Act Guidance

https://ecology.wa.gov/davis-bacon-act-guidance

Ecology Water Quality Grant/Loan Funding Cultural Resources Review Process Flow

https://ecology.wa.gov/cultural-resources-review-process-flow

Ecology Water Quality Funded Facility Projects Davis Bacon Act Memo

https://ecology.wa.gov/davis-bacon-act-memo

Ecology Water Quality Funded Facility Projects DBE Subcontractor Participation Form 6100-2

https://ecology.wa.gov/dbe-subcontractor-participation-form-6100-2

Ecology Water Quality Funded Facility Projects DBE Subcontractor Participation Form 6100-3

https://ecology.wa.gov/dbe-subcontractor-participation-form-6100-3

Ecology Water Quality Funded Facility Projects DBE Subcontractor Participation Form 6100-4

https://ecology.wa.gov/dbe-subcontractor-participation-form-6100-4

Clima Cover

Letter verifying that ClimaCover All Weather Protective Systems can be used as an alternative to sandbags in stormwater control.

https://ecology.wa.gov/climacover

Interceptor ClimaCover

Ecology finds ClimaCover Interceptor Dike is equivalent to BMP C200 Interceptor Dam. The specifications for the check dam system must adhere to the specifications listed in this letter.

https://ecology.wa.gov/climacoverinterceptordikefea

Silva Cell Modeling Procedure

Report on using the Western Washington Hydrology Model (Vers. 4.0) to size Silva Cells for stormwater runoff treatment and flow control.

https://ecology.wa.gov/deeprootssilvacellmodelingprocedure

DRAFT MTCA Disproportionate Cost Analysis Guidance

Draft guidance for choosing cleanup options using a disproportionate cost analysis.

https://ecology.wa.gov/dca-guidance

Draft Disproportionate Cost Analysis tool

Draft version of Excel-based tool for disproportionate cost analysis calculations

https://ecology.wa.gov/dca-tool