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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TransAlta Best Available Retrofit Technology (BART) order, second revision, 7/29/20

This is the second revised TransAlta Best Available Retrofit Technology (BART) order, 7/29/20.

https://ecology.wa.gov/20200729transaltabartorderrevised

VW federal Electric School Bus Grant Awards

A breakdown of VW federal grant awards for electric school buses by county and school district.

https://ecology.wa.gov/asset-collections-doc-assets-air-quality-vw-20200427-vwfed-elecschoolbusawards-alt

Technical Support Document for Best Available Retrofit Technology (BART) order second revision, TransAlta, 7/20

This is the technical support document for the second revision of the Best Available Retrofit Technology (BART) order for TransAlta, 7/20.

https://ecology.wa.gov/202007transaltabart2tsd

2020 SO2 attainment recommendation for Chelan and Douglas counties

Ecology's recommendation to EPA that the agency find Chelan and Douglas counties to be in attainment for sulfur dioxide air pollution.

https://ecology.wa.gov/20200716-ecologyso2attainmentrecommendationdouglas

How to Create a SAW Account for Source Management System (SMS)

These are instructions for how to create a SAW account, register for Air Quality Portal, and add Source Management System (SMS).

https://ecology.wa.gov/202007createsawsms

Source Management System (SMS) User Guide

These are instructions for using the Source Management System (SMS).

https://ecology.wa.gov/202007smsuserguide

Ecology comments to EPA on proposed ozone NAAQS standard

Comments submitted to EPA on the agency's proposed ozone standards.

https://ecology.wa.gov/20200929-ecology-ozone-naaqs-comments

Washington 2018 Greenhouse Gas Contributors by Percent

Pie chart showing 2018 Washington greenhouse gas contributors by percent

https://ecology.wa.gov/20201228-ghgpiechart-2018-alt

Tracking Washington Greenhouse Gases

Chart showing past emissions and future greenhouse gas limits set by the Legislature.

https://ecology.wa.gov/20201221-ghg-actual-projections_alt

State Agency Greenhouse Gas Emissions Calculator

State agencies use this calculator to determine and report their greenhouse gas emissions.

https://ecology.wa.gov/stateagencyghgcalculator

2020 regional haze overview presentation

An overview of the regional haze air quality process.

https://ecology.wa.gov/20201203-regional-haze-overview-presentation

Sabey Data Center Approval Order 20AQ-E22

This is the 2020 approval order for Sabey Data Center in Quincy.

https://ecology.wa.gov/20200916sabeydatacenterao20aqe22

Sabey Data Center 2020 Tier 2 letter & HIA Recommendation

This is the 2020 Tier 2 letter and Health Impact Assessment Recommendation for Sabey Data Center, Quincy

https://ecology.wa.gov/20200529sabeytier2hiarecomm

Auto Body Shop Surface Coating Guide, April 2020

This is the auto body shop surface coating guide, April 2020.

https://ecology.wa.gov/202004bodyshopsurfacecoat