Research & Data
Use this portal to filter and search for all of our scientific information.
Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our state’s land, air, and water. We provide access to that data through reports, databases, maps and user-friendly online tools.
Guidelines for Enhancing Public Awareness of SRF Assistance Agreements
EPA memo that provides implementation guidelines for public awareness efforts to promote water quality funding programs.
https://ecology.wa.gov/guidelines-for-enhancing-public-awareness-of-srf-a
Washington State Oil and Hazardous Materials Cleanup Contractors
List of contractors and facilities providing oil and hazmat cleanup in Washington.
https://ecology.wa.gov/washington-state-oil-and-hazardous-materials-clean
HHC Statement 070221
This statement given July 2, 2021 is about the EPA motion on the Human Health Criteria for Washington
https://ecology.wa.gov/hhc-statement-070221
Director Bellon Letter to Admin. Wheeler about HHC proposal
This is a letter requesting the EPA hold consultation with Ecology on the Human Heath Criteria upcoming proposed EPA rule.
https://ecology.wa.gov/hhc_hearings_letter_wheeler
Human Health Criteria Alternatives
Water Quality Policy 1-11 Updates to Human Health Criteria February 2017
https://ecology.wa.gov/hhc_alternatives020217
Water Quality Assessment/Policy 1-11 Updates Human Health Criteria Alternatives
Proposed Human Health Criteria Alternatives by Ecology March 2017
https://ecology.wa.gov/hhc-tissuealternative_032017
Policy 1-11 Public Dialogue Listings based on Human Health Criteria December 2016
This is a 2017 issue paper about tissue regarding the Water Quality Assessment/Policy 1-11 Updates Human Health Criteria Alternatives
https://ecology.wa.gov/hhctissueissuepaperpolicy1-11
TDG Hearing Presentation 9/16/19
Presentation at public hearing in Vancouver, WA on proposed revisions to WAC 173-201A
https://ecology.wa.gov/tdg-hearing-presentation
Handout for stakeholder mtg (WAC 173-443) 11/13-14/19
This is the handout for the 11/13-14/19 stakeholder meetings for Chapter 173-443 WAC, Hydrofluorocarbons.
https://ecology.wa.gov/handout-for-stakeholder-mtg-wac-173-443-11-13-14
Emerald Kalama and Fire Mountain Farms Hazardous Waste Petitions Fact Sheet
Decision to approve hazardous waste delisting and treatment variance petitions
https://ecology.wa.gov/hazardous-waste-petition-fact-sheet
Hoquiam Attachment A: Findings and Conclusions
This document Ecology�s formal description of the local SMP update process and conclusions regarding consistency with state laws and rules.
https://ecology.wa.gov/hoquiam-attachment-a-findings-and-conclusions
Pollution Prevention Planning Hazardous Substances List
Refer to this chemical list when doing your pollution prevention plan. Updated on May 19, 2017.
https://ecology.wa.gov/washington-state-pollution-prevention-planning-haz
Hoquiam Attachment B: Required Changes
This document presents changes to the SMP required to comply with state laws and rules.
https://ecology.wa.gov/hoquiam-attachment-b-required-changes
Hoquiam Attachment C: Recommended Changes
This document presents changes recommended to clarify the SMP.
https://ecology.wa.gov/hoquiam-attachment-c-recommended-changes
CSWGP High Turbidity/Low Transparency Reporting
Sites covered under the Construction Stormwater General Permit (Permit) must take specific reporting and adaptive management actions in order to comply with permit requirements when obtaining high turbidity results (greater than or equal to 250 Nephelometric Turbidity Units (NTUs)) or low transparency results (less than or equal to 6 centimeters).
https://ecology.wa.gov/highturbidity
Hoquiam Approved SMP August 2017
Shoreline Master Program that has been adopted by the local jurisdiction and Approved by Ecology
https://ecology.wa.gov/hoquiam-approved-smp-august-2017
2017 Annual Report for Herrold Fish & Oyster
Annual report reviews Zostera Japonica controls on commercial clam beds in Willapa Bay for Herrold Fish & Oyster.
https://ecology.wa.gov/herrold-3009-annual-report
2017 Annual Report for Heckes Clams
Annual report reviews Zostera Japonica controls on Willapa Bay for Heckes Clams.
https://ecology.wa.gov/heckes-3010-annual-report
2018 pretreatment plan for Heckes
2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Heckes.
https://ecology.wa.gov/heckes-2018-pretreatment-plan
2018 Pretreatment Plan for Herrold
2018 pretreatment plans on control for commercial clam beds in Willapa Bay for Herrold.
https://ecology.wa.gov/herrold-2018-pretreatment-plan
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