Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Policy 1-11 Easy-To-Read Bacteria Criteria Revisions

Easy to read version of water quality Policy 1-11 proposed bacteria criteria revisions for public comment

https://ecology.wa.gov/policy-1-11-draft-bacteria-criteria-revisions

pH benchsheet

is a quality-control tool for environmental laboratories.

https://ecology.wa.gov/ph-benchsheet

Policy 1-11 Summary of Proposed Revisions

This is a summary of proposed revisions for the water quality assessment listing Policy 1-11

https://ecology.wa.gov/policy-1-11-summary-of-proposed-revisions

Policy 1-11 Scoping Comments Summary June 2016

Summary scoping comments on the Policy 1-11, June 2016

https://ecology.wa.gov/policy1-11-scopingcommentssummary

Petition Response General Permit Small Mining Jan 19 2018

Response letter to petition for general permit for small scale mining

https://ecology.wa.gov/petition-response-general-permit-for-small-mining

Pilot Use Level Technologies Notice of Intent (application) form

Local governments with a National Pollutant Discharge Elimination System (NPDES) permit must submit this Notice of Intent Form to Ecology, and receive Ecology’s approval prior to installing a pilot-designated technology (except in retrofit situations).

https://ecology.wa.gov/puldnoi

Permit Denial Millennium Bulk Terminals

A water certification denial detailing the reasons why the Washington Department of Ecology made its decision.

https://ecology.wa.gov/permit-denial-millennium-bulk-terminals

Upland fin-fish hatching and rearing general permit

This is the 2015 general permit issued for upland fin-fish hatching and rearing. It is a National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit effective from April 1, 2016 until March 31, 2021.

https://ecology.wa.gov/permitfinal12152015

Coverage and Exemptions S1.A

This section describes the specific activities that require coverge and the exemptions.

https://ecology.wa.gov/permit-section-s1-a

Preliminary draft CBA and LBA (WAC 173-201A) 9/30/14

This is the preliminary draft cost benefit and least burdensome alternative analyses for WAC 173-201A Water quality standards for surface waters of the state of Washington.

https://ecology.wa.gov/preliminary-draft-cba-and-lba-wac-173-201a-9-30

Permeable Pavement Inspection Form

Low Impact Development guidance - Permeable Pavement Inspection Form

https://ecology.wa.gov/permeablepavementinspectionform

Perry Pallet Functional Equivalent

Ecology finds Perry Pallet Mulch functionally equivalent to BMP C121 Mulching and BMP C235 Wattles.

https://ecology.wa.gov/perry-pallet

permitcoverages

This is a list of permitees and applicator coverages for the aquatic plant

https://ecology.wa.gov/permitcoverages

Part III – Response to Comments on WWA Phase II Permit

Western Washington Phase II Municipal Stormwater Permit 2012 Response to comments for permit effective Aug. 1, 2013 Part III

https://ecology.wa.gov/part3

Part V – Response to Comments on Western Washington Appendix I and Low Impact Development

Western Washington Phase II Municipal Stormwater Permit 2012 Response to comments for permit effective Aug. 1, 2013 Part V

https://ecology.wa.gov/part5

Eastern Washington Phase II Municipal Stormwater Permit Response to Comments for Permit Effective August 1, 2014 (August 1, 2012) Part II

Part II - Response to Comments on EWA Phase II Permit

https://ecology.wa.gov/part2

Dismissal Order for CSWGP

March 27, 2017 Dismissal Order

https://ecology.wa.gov/pchbdismissal3-27-17

Sand & Gravel General permit permit reference index

Use this index to compare permit references between the 2011 and 2016 Sand & Gravel General Permits. (Note: this index does not indicate changes in permit langugae -- many sections in the permit were renumbered without a change in permit language.)

https://ecology.wa.gov/permitreferenceindex

Appendix A: Response to Comments for Permit Effective August 1, 2013 (August 1, 2012) Part IV

Part IV - Response to Comments on the Phase I Permit

https://ecology.wa.gov/part4

Appendix A: Response to Comments for Permit Effective August 1, 2013 (August 1, 2012) Part V

Part V - Response to Comments on Western Washington Appendix I and Low Impact Development

https://ecology.wa.gov/part5-a34b5a3f5e2b9412ddd4eeb493f1d99a