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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The Tri-Cities Ozone Precursor Study

A report on the ozone study conducted in the Tri-Cities area.

https://ecology.wa.gov/20171212tricitiesozoneprecursorstudy

State Implementation Plan Process

This is the text version of the steps to develop and finalize a state implementation plan.

https://ecology.wa.gov/171026stateimplementationplanprocess-alt-docx

Washington Mandatory Greenhouse Gas Reporting Program - Reported Emissions for 2012-2015

Certain large facilities are required to submit their greenhouse gas emissions to Ecology. This is the report of those emissions from 2012-2015.

https://ecology.wa.gov/wa-ghg-reporting-data-2012-2015

VW Final Executed Trust Agreements, October 2017

United States' notice of final trust agreement for VW federal settlement.

https://ecology.wa.gov/vwfinalexecutedtrust-agreements

2017 VW affected vehicles registered in Washington.

The text version for the map showing where, by percentage, the affected cars are registered in Washington.

https://ecology.wa.gov/2017affectedvwcars-alt

Washington State Agencies Required to Report their Greenhouse Gas Emissions to Ecology

Some Washington state agencies are required to report their greenhouse gas emissions to Ecology. This is a list of those that are required.

https://ecology.wa.gov/stateagenciesrequiredtoreportghg

Washington State Agency Greenhouse Gas Reporting and Calculator Instructions

Instructions to help state agencies fill out the greenhouse gas calculator.

https://ecology.wa.gov/stateagencyghgcalculatorinstructions

Approved verifiers and verification bodies for greenhouse gas reporting

A list of approved third party verifiers and verification bodies in Washington's Greenhouse Gas Reporting Program.

https://ecology.wa.gov/2017ghgverifierlist

Oath Approval Order 16AQ-E012 Amendment 2

This is the 2017 amendment 2 approval order for Oath Holdings in Quincy.

https://ecology.wa.gov/20171222oath16aq-e012amend2

Continued Response Actions to Partial Collapse of PUREX Tunnel 1

Due to the continued immediate threat to human health and the environment posed by the instability of PUREX Tunnel 1, Ecology approves grouting of PUREX Tunnel 1 as an interim stabilization measure.

https://ecology.wa.gov/20170608purexgroutresponse

Yahoo Data Center - Legal notice for revised Notice of Construction permit

Legal notice for revised Notice of Construction permit for Yahoo Data Center, 8/8/17

https://ecology.wa.gov/yahoolegalnotice08082017

Amended Administrative Order Docket #15419 amending Order Docket #14156

This amended order adds PUREX Tunnel 2 to the scope of Corrective Action 3 and provides additional time for USDOE-RL and CHPRC to complete Corrective Action 3.

https://ecology.wa.gov/20170915purexamendedorder

Yahoo Data Center - Technical Support Document for Notice of Construction permit

Technical Support Document for Notice of Construction permit for Yahoo Data Center, 7/13/17

https://ecology.wa.gov/yahoopd16aqe012amd1

Yahoo Data Center - Notice of Construction application

Notice of Construction application for Yahoo Data Center, 6/9/17

https://ecology.wa.gov/yahoonocapp060917

Vantage Data Center, Quincy Agreed Order with TSD & R2C

This is the Agreed Order 16AQ-E026 for Vantage Data Center with the Technical Support Doc and the Response to Comments attached.

https://ecology.wa.gov/201712vantagequincyao16aq-e026-tsd-r2c

2017 Noxious Weed General Permit

Noxious Weed General Permit from 2017.

https://ecology.wa.gov/2017noxiousweedpermit

2017 Noxious Weed General Permit Fact Sheet

Noxious Weed General Permit Fact Sheet from 2017.

https://ecology.wa.gov/2017noxweedfactsheet

Potential MS4 Outfall Reporting Standard Attribute Information (February 2017)

This handout was created as part of the MS4 Outfall Reporting Standard presentation and illustrates our initial thinking on what a MS4 outfall reporting standard might look like.

https://ecology.wa.gov/2017outfallhandout

Meeting introduction for Reissuance of the Phase I and Western Washington Phase II Municipal Stormwater Permits

This is a meeting agenda and background for the public meetings of the Reissuance of the Phase I and Western Washington Phase II Municipal Stormwater Permits in 2017.

https://ecology.wa.gov/2017pubmtgagenda

Public meeting table prompts for MS4 reissuance 2017

This is the list of table prompts from the public meeting for the MS4 reissuance process.

https://ecology.wa.gov/2017pubmtgtableprompts