Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

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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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Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

Regulations & Permits icon

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.

See more about this collection...
Table of ASIL, SQER, and de minimis emission values – WAC 173-460-150 (Effective 12-23-2019)
This is the 12/23/19 sortable table of toxic air pollutants (TAPs) listed in Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.
https://ecology.wa.gov/table-of-asil-sqer-and-de-minimis-emission-value
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
Washington Emissions Inventory Reporting System (WEIRS) Emissions Inventory Codes
Emissions Inventory Codes for Washington Emissions Inventory Reporting System (WEIRS), 12/20/19
https://ecology.wa.gov/20191220emissionsinventorycodes
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
2001 - 2017 GHG and GDP percentage changes
graph showing population, economy, greenhouse gas emissions from 2001 - 2017
https://ecology.wa.gov/20191118ghggdp-alt
HFC User Guide, long version
This is the longer instructions about how to submit your completed HFC notification form using our online reporting system.
https://ecology.wa.gov/hfc-user-guide-long-20190901
HFC User Guide, short version
This is the short (one-page) instructions about how to submit your completed HFC notification form using our online reporting system.
https://ecology.wa.gov/hfc-user-guide-short-20190901
Washington's greenhouse gas emissions targets
A chart showing greenhouse gas emission reduction targets compared to a 1990 baseline.
https://ecology.wa.gov/20190729emissions-alt
2019-21 Capital Budget 4-Way Comparison April 2019
Ecology 2019-21 biennium capital budget proposals, 4-way comparison is (1) Governor’s errata, (2) to Senate committee, (3) to House floor, (4) to Compromise budget.
https://ecology.wa.gov/2019-21-capital-budget-comparison
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
Microsoft Columbia 2019 NOC Application
This is the 2019 air quality notice of construction application for Microsoft Columbia in Quincy
https://ecology.wa.gov/20191206microsoftcolumbianocapp
Microsoft Columbia C06, Quincy, Preliminary Determination
This is the preliminary determination for the Microsoft Columbia expansion, C06.
https://ecology.wa.gov/20191209mscolumbiapd
Microsoft Columbia, Quincy, draft Technical Support Document
This is the draft technical support document for Microsoft Columbia's expansion, C06, in Quincy.
https://ecology.wa.gov/20191209mscolumbiadrafttsd
Microsoft Columbia C06, Quincy, NOC Application
This is the notice of construction application for Microsoft Columbia's C06 expansion
https://ecology.wa.gov/20191206mscolumbianocappc06
Microsoft MWH Approval Order Modification
This is the air quality approval order modification for Microsoft MWH in Quincy.
https://ecology.wa.gov/20191126mwhaomod
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
Schweitzer Engineering Labs (SEL) Health Impact Assessment Recommenation
This is the health impact assessment recommendation for Schweitzer Engineering Labs (SEL) in Pullman.
https://ecology.wa.gov/20190805selhia
Microsoft MWH Preliminary Determination 19AQ-E031
This is the preliminary determination for the revision to Microsoft MWH Data Center's 2018 approval order.
https://ecology.wa.gov/201907mwhpd19aqe031
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