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.
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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