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.
2010 Triennial review 5-year plan
We reviewed all comments received during the comment period and developed a five-year plan
https://ecology.wa.gov/5yrtrireviewplanfinal082011-pdf
5-7-19DirectorBellonLettertoEPA
This letter expresses Ecology's concern over reconsidering Washington State's Water Quality Standards for Human Health Criteria
https://ecology.wa.gov/5-7-19directorbellonlettertoepa
Public review draft - Policy 1-11 Chapter 1 Harmful Algae Blooms Methodology
Draft shows proposed revisions. Public comment period November 2022 through Jan. 6, 2023. One of 2 documents with draft revisions.
https://ecology.wa.gov/2022-policy-1-11-chapter-1-hab-methodology-draft-r
Public review draft - Policy 1-11 Chapter 1 non-substantial updates
Draft shows revisions with track changes. Public comment period November 2022 through Jan. 6, 2023. One of 2 documents with draft revisions.
https://ecology.wa.gov/2022-policy-1-11-chapter-1-non-substantial-updates
Summarization notes Category 4B (Other Pollution Control Program) for PCB impaired waters
Follow up from March 30, 2017 Meeting discussing implementation of Human Health Criteria in the Water Quality Assessment Policy 1-11
https://ecology.wa.gov/4bpcbfinal
Uplet Outlet Ecology Approval Letter
This document explains 2gH Solutions Uplet Outlet is not approved by Ecology, however it is allowed to be installed with stipulations.
https://ecology.wa.gov/2gh-uplet-outlet-approval-letter
Summary of changes
Summary of changes being made to the 2019 general permit
https://ecology.wa.gov/ffp-permit-modification-summary-of-changes
401 Certification - Wynoochee
The 401 certification document for Wynoochee
https://ecology.wa.gov/401-certification-wynoochee
ACF wheel washing
Letter showing ACF wheel washing functional equivalence.
https://ecology.wa.gov/acfwestwheelwashfeaenclosure
Fact Sheet Addendum
Fact sheet addendum to the 2019 modified general permit
https://ecology.wa.gov/ffpmodifiedfsaddendum-draft
Modified Permit draft
2019 modified general permit - draft version open for comment
https://ecology.wa.gov/ffpmodifiedpermit
APAM Shoreline template.
Template used to show when herbicides will be applied.
https://ecology.wa.gov/2apamshoreline
Shoreline Posting Template for Noxious Weeds
Post this sign when treating for noxious weeds.
https://ecology.wa.gov/2shorelinepostingtemplatesnoxweed
Shoreline Posting Template for Noxious Weeds in Spanish
Use these Spanish signs when treating for noxious weeds.
https://ecology.wa.gov/2shorelinepostingtemplatesnoxweed_spanish
Stormwater Control Transfer Program second draft comments
Ecology is issuing this second draft guidance in concert with a companion draft guidance, Building Cities in the Rain, being issued by the Department of Commerce
https://ecology.wa.gov/2nd-draft-comments
2018WAG993013AnnualRpt
2018 Z. Japonica R&J Seafood Annual Report
https://ecology.wa.gov/2018wag993013annualrpt
2018WAG993010AnnualRpt
2018 Z. Japonica Heckes Clam Annual Report
https://ecology.wa.gov/2018wag993010annualrpt
2019 Pretreatment Plan
Document describing the plans of the Permittee for treating Z. japonica on their commercial clam beds this year.
https://ecology.wa.gov/2019longislandpretreatplan
2018WAG993012AnnualRpt
2018 Z. Japonica Nisbet Annual Report
https://ecology.wa.gov/2018wag993012annualrpt
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