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.
Revising and adopting existing documents
Guidance for using existing SEPA documents
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/revising-and-adopting-existing-documents
Pharmaceutical waste codes
Find common waste codes for pharmaceutical waste.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/rcra-waste-codes
SEPA guidance on appeal process
SEPA guidance on administrative and judicial appeals
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/guide-for-lead-agencies/appeals
Frequently asked questions about pharmaceutical waste
Frequently asked questions about pharmaceutical waste and our answers.
https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/dangerous-waste-guidance/common-dangerous-waste/pharmaceutical-waste/frequently-asked-questions
Paired watershed retrofit & restoration study
Stormwater Action Monitoring effectiveness study: Paired watershed retrofit and restoration study.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/paired-watershed-retrofit-and-restoration-study
Water budgets of individual local trees
This study investigates how much water trees use and may help us mitigate stormwater.
https://ecology.wa.gov/regulations-permits/reporting-requirements/stormwater-monitoring/stormwater-action-monitoring/sam-effectiveness-studies/water-budgets-of-individual-local-trees
SEPA checklist guidance, Section B: Earth
Checklist guidance Part B. Elements of the Environment
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-earth
SEPA checklist guidance, Section B: Air
SEPA Guidance for Environmental Checklist
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-air
SEPA checklist guidance, Section B: Water
Guidance to complete Water section for Part B of SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-3-water
SEPA checklist guidance, Section B: Plants
SEPA Guidance for Plants section, Part B for the state Environmental Checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-4-plants
SEPA checklist guidance, Section B: Animals
Guidance for Part B, Animals section for SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-5-animals
SEPA checklist guidance, Section B: Energy & natural resources
Guidance for Energy & natural resources section for Part B, SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-6-energy-natural-resou
SEPA checklist guidance, Section B: Environmental health
Guidance for Environmental Health section of Part B for SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-7-environmental-health
SEPA checklist guidance, Section B: Land & shoreline use
Guidance for Land & shoreline use in Part B of SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-8-land-shoreline-use
SEPA checklist guidance, Section B: Housing
Guidance for completing Housing section for Part B of the SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-9-housing
SEPA checklist guidance, Section B: Aesthetics
Guidance for completing Aesthetics section for Part B of the SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-10-aesthetics
SEPA checklist guidance, Section B: Light & glare
Guidance for completing Light & glare section in Part B of the SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-11-light-glare
SEPA checklist guidance, Section B: Recreation
Guidance for completing Recreation section for Part B of SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-12-recreation
SEPA checklist guidance, Section B: Historic & cultural preservation
Guidance for historic & cultural preservation section in SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-13-historic-cultural-p
SEPA checklist guidance, Section B: Transportation
Guidance for Transportation section for Part B of SEPA environmental checklist.
https://ecology.wa.gov/regulations-permits/sepa/environmental-review/sepa-guidance/sepa-checklist-guidance/sepa-checklist-section-b-environmental-elements/environmental-elements-14-transportation
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