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.
Underground storage tank closures
Important information about closing your underground storage tanks.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/underground-storage-tank-closures
Property inspection checklist
Before buying property, use the property inspection checklist to complete an onsite inspection.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/property-inspection-checklist
Records search checklist
Before buying property, use the records search checklist for due diligence and to know past uses.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/records-search-checklist
Aquatic pesticide permits
Find information about the various aquatic pesticide permits used in our state.
https://ecology.wa.gov/regulations-permits/permits-certifications/aquatic-pesticide-permits
BP Refinery
We regulate water, hazardous waste, and cleanup activities at the BP Cherry Point Refinery in Blaine.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/bp-refinery
Lanxess Corporation (Formerly Emerald Kalama Chemical)
We regulate water, hazardous waste, and cleanup activities at the Lanxess Corporation plant.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/lanxess-corporation
HF Sinclair Puget Sound Refinery
We regulate water and hazardous waste activities at the HF Sinclair Puget Sound Refinery in Anacortes.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/hf-sinclair-puget-sound-refinery
Packaging Corp. of America, Wallula
We regulate air, water, hazardous waste, and compost at the PCA mill in Wallula.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/pca-wallula
Port Townsend Paper
We regulate air, water, and hazardous waste at the Port Townsend Paper Corp. pulp and paper mill
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/port-townsend-paper
Georgia Pacific, Camas
We regulate water, hazardous waste, and cleanup actions at the Georgia Pacific mill in Camas.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/georgia-pacific-camas
Approved vendors for operator training
We have a list of approved vendors who provide UST operator training in Washington.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/ust-owner-and-operator-resources/underground-storage-tank-operator-certification/approved-vendors
CLARC data tables and other technical information
Download CLARC data tables for information that helps site managers determine cleanup levels.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-clean-up-tools/clarc/data-tables
History of changes to CLARC
Read about major changes to the Cleanup Levels and Risk Calculation (CLARC) spreadsheet since 2004.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-clean-up-tools/clarc/latest-news
Millennium Bulk Terminals Longview
Millennium proposed a coal export terminal at the former Reynolds smelter in Cowlitz County.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/millennium
CLARC glossary
A glossary for terms and acronyms in CLARC's resource pages.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-clean-up-tools/clarc/glossary
Imperium expansion proposal
Imperium Terminal Services proposed expanding its existing transport facility in Hoquiam.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/grays-harbor-terminal-expansion/imperium-expansion-proposal
Contanda expansion proposal
Contanda, formerly Westway Terminal, proposed an expansion of the Grays Harbor methanol terminal.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/grays-harbor-terminal-expansion/contanda
Grays Harbor terminal expansion environmental reviews
The current status of environmental reviews for two oil-related proposals in Grays Harbor.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-at-ecology/grays-harbor-terminal-expansion
CLARC guidance
Use these guidance documents in combination with CLARC to establish cleanup levels.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/contamination-clean-up-tools/clarc/guidance
Goldendale Energy Storage Project
Environmental review and permitting for the proposed Goldendale Energy Storage Project.
https://ecology.wa.gov/regulations-permits/permits-certifications/industrial-facilities-permits/goldendale-energy
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