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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Fire Mountain Farms flood map

FEMA flood map for Fire Mountain Farms' proposed biosolids land application site

https://ecology.wa.gov/fire-mountain-farms-flood-map

Fire Mountain Farms landowner agreement

Landowner consent for the application of biosolids

https://ecology.wa.gov/landowner-agreement

Frequently Asked Questions: Mineral prospecting and placer mining

Frequently asked question on implementing Engrossed Substitute House Bill 1261 for changes to mineral prospecting and placer mining, effective June 11, 2020

https://ecology.wa.gov/frequently-asked-questions-mineral-prospecting-and

Hydro Battery Pearl Hill Water Quality Certification application & public notice

Application for State of Washington water quality certification for Hydro Battery Pearl Hill.

https://ecology.wa.gov/hydro-battery-pearl-hill-wqc-application-public

Goldendale Energy Storage Project Section 401 water quality certification

On May 22, 2023, Ecology notified Rye Development that it issued a water quality certification for the Goldendale project.

https://ecology.wa.gov/goldendale-section-401-water-quality-certification

FODS

This document explains that FODS is determined to be functionally equivalent to BMP C105: Stabilized Construction Entrance.

https://ecology.wa.gov/fods

Hydro Bioinfiltrator Equivalent

Ecology finds Hydro Bioinfiltrator functionally equivalent to a bioretention planter or planter box.

https://ecology.wa.gov/hydro-bioinfiltrator

Jefferson Co Add to Attachment A: Findings and Conclusions June 22, 2011

ThThis document Ecology’s formal description of the local SMP update process and conclusions regarding consistency with state laws and rules.

https://ecology.wa.gov/jefferson-co-addendum-to-attachment-a-findings-an

ISGP Appendix 3

Appendix 3 - SWPPP Certification Form

https://ecology.wa.gov/isgp-appendix-3

Appendix 5 to the Industrial Stormwater General Permit

This is a list of dischargers subject to TMDL requirements in the Industrial Stormwater General Permit.

https://ecology.wa.gov/iswgp-appendix-5

Formal Sand and Gravel General Permit draft.

See the formal Sand and Gravel General Permit draft.

https://ecology.wa.gov/formal-sand-and-gravel-draft

2015 Formal Draft Sand & Gravel General Permit

2015 Word version - changes between the current permit and the formal draft Formal Draft Sand & Gravel General Permit

https://ecology.wa.gov/formalsandandgraveldraft

Powerpoint Reissuance of Phase I &Western Washington Phase II Municipal Stormwater Permits

Introductory slides for the public meetings in 2017 about the Reissuance of Phase I &Western Washington Phase II Municipal Stormwater Permits.

https://ecology.wa.gov/intro_p_2017publicmeetings

Lacey meeting notes for MS4 reissuance 2017

Notes from 3/2/17: W.WA Municipal Stormwater Permit Reissuance public meeting w/webinar option– Lacey

https://ecology.wa.gov/laceymtg-notes03022017

2017 Annual Report for Herrold Fish & Oyster

Annual report reviews Zostera Japonica controls on commercial clam beds in Willapa Bay for Herrold Fish & Oyster.

https://ecology.wa.gov/herrold-3009-annual-report

2017 Annual Report for Heckes Clams

Annual report reviews Zostera Japonica controls on Willapa Bay for Heckes Clams.

https://ecology.wa.gov/heckes-3010-annual-report

2018 pretreatment plan for Heckes

2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Heckes.

https://ecology.wa.gov/heckes-2018-pretreatment-plan

2018 Pretreatment Plan for Herrold

2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Herrold.

https://ecology.wa.gov/herrold-2018-pretreatment-plan

Findings of Fact, Conclusions of Law and Order, PCHB No. 05-157, 158, and 159

Four parties appealed the construction stormwater general permit (issued November 16, 2005). The Pollution Control Hearings Board issued a final decision.

https://ecology.wa.gov/findingsoffact

INTERAGENCY AGREEMENT NO. 9F9U BETWEEN THE STATE OF WASHINGTON DEPARTMENT OF ECOLOGY AND PORT OF SEATTLE

This agreement between Ecology and the Port of Seattle about Cruise Ships

https://ecology.wa.gov/interagency-agreement-ecology-and-port-of-seattle