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.

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121317CoverageandSSLAPforFMFRosmanUnit.pdf

Final coverage letter and related documents for biosolids application permit at Rosman Farms in Lincoln County.

https://ecology.wa.gov/121317coverageandsslapforfmfrosmanunit-pdf

10-6-19 Agency comments on federal rulemaking

This is the agency's official written comments submitted to EPA about the federal rulemaking to repeal our state water quality standards.

https://ecology.wa.gov/10-6-19-agency-comments-on-federal-rulemaking

10-29-20 GAP rule webinar presentation

A PowerPoint presentation shared with participants in the Oct. 29 webinar for the GAP rule.

https://ecology.wa.gov/10-29-20-presentation

Greenhouse Gas Assessment for Projects (GAP) Rulemaking October 2020 Meeting Summary

Meeting summary for 10-29-20 public rulemaking webinar

https://ecology.wa.gov/10-29-20-meeting-summary

Greenhouse Gas Assessment for Projects (GAP) Rulemaking November 2020 Presentation

Public webinar presentation given 11-17-20

https://ecology.wa.gov/11-17-20-presentation

Greenhouse Gas Assessment for Projects (GAP) Rulemaking November 2020 Meeting Summary

Meeting summary for 11-17-20 public rulemaking webinar

https://ecology.wa.gov/11-17-20-meeting-summary

June 2014 Status and Trends Recommendations

https://ecology.wa.gov/11june2014recommendsrsmpeffectivenesss-t

Municipal Stormwater Phase II Permit S5.C.1 Education and Outreach permit section preliminary draft

Public Education and Outreach (Phase II) Preliminary draft “fact sheet” and permit language.

https://ecology.wa.gov/10-3-17prelim_phi_ed_o

Municipal Stormwater Phase I Permit S5.C.10 Education and Outreach permit section preliminary draft

Public Education and Outreach (Phase I) Preliminary draft “fact sheet” and permit language.

https://ecology.wa.gov/10-3-17prelim_phi_ed_o-1

S5.C.4/S5.C.5 Controlling Runoff – site and subdivision scale

2019 Western Washington Municipal Stormwater preliminary draft permit language for S5.C.4/S5.C.5 Controlling Runoff – site and subdivision scale.

https://ecology.wa.gov/10-3-17prelimcontrollingrunoff

Preliminary draft language for S5.C.2/S5.C.3 Mapping for MS4 permits

2019 Western Washington Municipal Stormwater Permit preliminary draft language for S5.C.2/S5.C.3 Mapping.

https://ecology.wa.gov/10-3-17prelimdraftmappingfinal

S5.C.8/S5.C.3 IDDE tracking and reporting

Preliminary draft permit section for the Phase I and Western Washington Phase II Municipal Stormwater Permit language on IDDE tracking and reporting.

https://ecology.wa.gov/10-3-17prelimidde_final

S8. Monitoring

Proposed 2019-2024 Phase I MS4 permit language for S8. Monitoring and Assessment.

https://ecology.wa.gov/10-3-17prelims8_costappendixfinal

10-21-24 Meeting Agenda

This is the agenda for the Oct. 21, 2024 meeting of the Battery Stewardship Rulemaking Advisory Committee.

https://ecology.wa.gov/10-21-24-meeting-agenda

10-21-24 Meeting read-along document

This is a read-along document for the Oct. 21, 2024 meeting of the Battery Stewardship Rulemaking advisory committee.

https://ecology.wa.gov/10-21-24-meeting-read-along-document

Cap-and-Invest: No-cost allowance allocation for electric utilities

Presentation of Cap-and-Invest: No-cost allowance allocation for electric utilities meeting on Oct. 16, 2024

https://ecology.wa.gov/1016124nocostallowance

10-21-24 Presentation

This is a presentation for the Oct. 21, 2024 meeting of the Battery Stewardship Rule Advisory Committee.

https://ecology.wa.gov/10-21-24-presentation

10-21-27 Meeting notes

This document contains the Oct. 21, 2024 meeting notes of the Advisory Committee on battery stewardship rulemaking in Washington.

https://ecology.wa.gov/10-21-27-meeting-notes

12-10-24 CR-101 form

This is the CR-101 form for announcing WAC 173-350 rulemaking on organics management.

https://ecology.wa.gov/12-10-24-cr-101-form