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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Technical support document for the air quality general order for asphalt plants

This is the technical support document for the air quality general order for asphalt plants.

https://ecology.wa.gov/20110418asphaltplantstsd

Air quality general order for concrete batch plants

This is the air quality general order for concrete batch plants.

https://ecology.wa.gov/20111206goconcretebatchplants

Technical support document for air quality general order for concrete batch plants, December 6, 2011

This is the technical support document for the air quality general order for concrete batch plants, December 6, 2011.

https://ecology.wa.gov/20111206concretebatchplantstsd

Air quality general order for dry cleaners, December 6, 2011

This is the air quality general order for dry cleaners, December 6, 2011.

https://ecology.wa.gov/20111206gorockcrushers

Technical Support Document for air quality general order for rock crushers, December 6, 2011

This is the technical support document for the air quality general order for rock crushers, December 6, 2011.

https://ecology.wa.gov/20111206rockcrusherstsd

Technical support document for air quality general order for dairy manure anaerobic digesters

This is the technical support document for the air quality general order for dairy manure anaerobic digesters.

https://ecology.wa.gov/201203dairydigesterstsd

Air quality general order for dairy manure anaerobic digesters

This is the air quality general order for dairy manure anaerobic digesters.

https://ecology.wa.gov/20120421godairydigesters

Auto Body Shop Surface Coating Guide, April 2020

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

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

2011 comprehensive emissions inventory three-year summary

This is a spreadsheet of the 2011 comprehensive three-year emissions inventory.

https://ecology.wa.gov/2011-comprehensive-emissions-inventory-summary

2011 County Emissions Inventory Technical Documentation

This document describes the methods and data sources used to estimate emissions for base year 2011.

https://ecology.wa.gov/201410countyemissionsinventory2011

Minor source baseline dates by county

This is a spreadsheet of minor sources with baseline dates by county.

https://ecology.wa.gov/201502minorsourcebaselinecounty

2011 Comprehensive Emissions Inventory Categories Reference

This reference document summarizes the methods used to prepare the Washington 2011 County Emissions Inventory.

https://ecology.wa.gov/2011-comprehensive-emissions-inventory-categories

2011 point source emissions annual summary

This is a spreadsheet of the annual summary of 2011 point source emissions.

https://ecology.wa.gov/2011-point-source-emissions-summary

Baseline modeling inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the baseline modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationbaseline

2014 emissions inventory for Prevention of Significant Deterioration-permitted facilities

This is the spreadsheet of 2014 emissions inventory for facilities with a Prevention of Significant Deterioration permit.

https://ecology.wa.gov/201603prevsignificantdeteriorationinventory

Input data for modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities

This is a spreadsheet of the input data for modeling emissions inventory for Prevention of Significant Deterioration-permitted facilities.

https://ecology.wa.gov/201603prevsignificantdeteriorationsupp

Prevention of Significant Deterioration baseline emissions inventory technical support

This is the technical support document for the baseline emissions inventory for facilities with a Prevention of Significant Deterioration permit.

https://ecology.wa.gov/201603prevofsignificantdeteriorationtechsupport

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

2021 Areas of Concern map

2021 map showing areas of concern for criteria pollutants

https://ecology.wa.gov/20210806-aoc-map-alt

Prior years point source emissions data

This spreadsheet shows emissions from facilities and other point sources from 2009 forward.

https://ecology.wa.gov/prior-years-point-source-emissions