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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Creating a SAW account for Washington Emissions Inventory Reporting System (WEIRS)

Instructions for creating a SAW account for Washington Emissions Inventory Reporting System (WEIRS)

https://ecology.wa.gov/20190723creatingsawweirsaccount

VW Federal Funds For Ferry

Alternate text for the graphic showing VW federal funds are going towards retrofitting a diesel ferry to electric hybrid

https://ecology.wa.gov/20191022-vwfederalfundsforferry-alt

VW Settlement - Q & A EV charging infrastructure at workplaces grants

Electric Vehicle Charging Infrastructure at State and Local Government-Owned Facilities

https://ecology.wa.gov/20191003-workplace-charging-grants

VW federal settlement electric transit bus awards

Text version of Washington map showing where electric transit bus grant awards were dispersed

https://ecology.wa.gov/06122019vwfedelectransitbus

VW settlement funds distribution

An image showing how the VW settlement funds will be distributed

https://ecology.wa.gov/20190205vwsettlementfundsdistribution-alt

CyrusOne Data Center Approval Order 19AQ-E052

This is the air quality approval order No. 19AQ-E052 for the CyrusOne Data Center in Quincy.

https://ecology.wa.gov/20191023cyrusoneao19aqe052

Oath Approval Order No. 19AQ-E048

This is the 2019 air quality approval order for Oath Holdings in Quincy.

https://ecology.wa.gov/20190730oath19aq-e048

CyrusOne Data Center Tier 2 letter

This is the tier 2 letter for CyrusOne Data Center.

https://ecology.wa.gov/20190425cyrusonetier2ltr

CyrusOne Data Center Health Impact Assessment Recommendation

This is the health impact assessment recommendation for CyrusOne Data Center.

https://ecology.wa.gov/20190425cyrusonetier2hiarec

Vantage Data Center approval order 19AQ-E026

This is the approval order, technical support document, and response to comments for Vantage Data Center in 2019.

https://ecology.wa.gov/20190710vantagedatacenter19aqe026

CyrusOne Data Center Notice of Construction Application

This is the notice of construction application for CyrusOne Data Center.

https://ecology.wa.gov/20190219cyrusonenocappwithadd

2019 Final Table of Toxic Air Pollutants (WAC 173-460) 12/23/19

This is the 12/23/19 adopted table of toxic air pollutants listed in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/tapstable122319

2019 Proposed Table of Toxic Air Pollutants (WAC 173-460) 06/03/19

This is the 6/3/19 proposed table of toxic air pollutants listed in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.

https://ecology.wa.gov/2019-proposed-table-of-toxic-air-pollutants-wac-1

Microsoft MWH Data Center Approval Order & TSD 19AQ-E031

This is the 2019 approval order and technical support document for Microsoft MWH Data Center.

https://ecology.wa.gov/20190926microsoftmwhaotsd19aqe031

Microsoft MWH FAQ Sheet

This is the general information and FAQ sheet for Microsoft MWH's 2018 permit revision.

https://ecology.wa.gov/20190601mwhfaqsheet

Microsoft MWH Technical Support Document for 19AQ-E031

This is the technical support document for Microsoft MWH's Data Center 2018 permit revision.

https://ecology.wa.gov/20190524mwhtsd19aqe031

Microsoft MWH NOC Application Approval Order amendment

This is the notice of construction approval order amendment request for Microsoft MWH.

https://ecology.wa.gov/20190508mwhnocapp