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.
Solid Waste Handling Standards Rule - Chapter 173-350 WAC
2018 Solid Waste Conference presentation on solid waste handling standards rule changes
https://ecology.wa.gov/350-changes-presentation
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
3 Year Worst Case Drill Outlook
A list, by year, of the plan holders that are expected to hold a worst-case drill.
https://ecology.wa.gov/3-year-worst-case-drill-outlook
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
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
401 Certification - Wynoochee
The 401 certification document for Wynoochee
https://ecology.wa.gov/401-certification-wynoochee
Greenhouse Gas Assessment for Projects (GAP) Rulemaking June 2020 Presentation
Public webinar presentation given 6-25-20
https://ecology.wa.gov/6-25-20-presentation
6-9-22 PCR Rulemaking Meeting Notes
Meeting notes from the Post Consumer Resin rulemaking advisory committee.
https://ecology.wa.gov/6-9-22-pcr-rulemaking-meeting-notes
Greenhouse Gas Assessment for Projects (GAP) Rulemaking June 2020 Meeting Summary
Meeting summary for 6-25-20 public rulemaking webinar
https://ecology.wa.gov/6-25-20-meeting-summary
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
3-15-2017 Stormwater Work Group
3-15-2017 Stormwater Work Group Meeting Agenda and Summary
https://ecology.wa.gov/3-15-2017-stormwater-work-group-meeting-agenda-and
6-7-2017 Stormwater Work Group
6-7-2017 Stormwater Work Group Meeting Agenda and Summary
https://ecology.wa.gov/6-7-2017-stormwater-work-group-meeting-agenda-and
5-6-24 Rule Advisory Committee Meeting Notes
May 6, 2024 meeting notes for the Battery Stewardship Rulemaking advisory committee.
https://ecology.wa.gov/5-6-24-meeting-notes
6-24-24 Meeting Notes
This document contains the 6-24-24 meeting notes of the Advisory Committee on battery stewardship rulemaking in Washington.
https://ecology.wa.gov/6-24-24-meeting-notes
StevensCountyWaterBankProposal2
2nd Stevens County proposal
https://ecology.wa.gov/2nd-stevens-county-summary-proposal
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