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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A User's Guide to Compost: The Beauty of Your Lawn and Garden Blossoms from the Soil

A composting guide aimed at homeowners.

https://ecology.wa.gov/a-user-s-guide-to-compost-the-beauty-of-your-lawn

7Q10 for High Flows on the Columbia/Snake Rivers

Guidelines for arriving at 7Q10 for dissolved gas standards.

https://ecology.wa.gov/7q10forhighflows

6-9-22 PCR Rulemaking Presentation

A presentation from the Post-Consumer Resin Rulemaking Advisory Committee.

https://ecology.wa.gov/6-9-22-pcr-rulemaking-presentation

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

Public webinar presentation given 7-23-20

https://ecology.wa.gov/7-23-20-presentation

7-28-22 PCR Rulemaking Advisory Committee meeting summary

Meeting notes from the rulemaking advisory committee for post-consumer recycled plastics, WAC 173-925.

https://ecology.wa.gov/7-28-22-pcr-rulemaking-advisory-committee-meeting

8-18-22 Advisory committee meeting presentation

This is a presentation of the PCR rulemaking advisory committee meeting, from 8-18-22.

https://ecology.wa.gov/8-16-22-advisory-committee-meeting-presentation

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

Meeting summary for 7-23-20 public rulemaking webinar

https://ecology.wa.gov/7-23-20-meeting-summary

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

Public webinar presentation given 8-27-20

https://ecology.wa.gov/8-27-20-presentation

8-18-22 Advisory Committee Notes

These are meeting notes from the 8-18-22 meeting of the PCR rulemaking advisory committee.

https://ecology.wa.gov/8-16-22-advisory-committee-notes

9-29-22 PCR Rulemaking Meeting Notes

This document contains summary notes from the final meeting of the post-consumer resin rulemaking advisory committee.

https://ecology.wa.gov/9-29-22-pcr-rulemaking-meeting-notes

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

Meeting summary for 8-27-20 public rulemaking webinar

https://ecology.wa.gov/8-27-20-meeting-summary

9-29-22 PCR Rulemaking Meeting Notes

This document contains summary notes from the final meeting of the post-consumer resin rulemaking advisory committee.

https://ecology.wa.gov/9-29-22-pcr-rulemaking-meeting-notes-1

9-29-22PCRRulemakingPresentation

This is the staff presentation for the final meeting of the advisory committee on recycled content minimums.

https://ecology.wa.gov/9-29-22-pcr-rulemaking-presentation

Aberdeen - Ecology's Final Approval Letter

Ecology's letter notifying Aberdeen that Ecology has taken final action and the SMP update is approved

https://ecology.wa.gov/aberdeen-ecology-s-final-approval-letter

Aberdeen Approved SMP August 2017

Shoreline Master Program that has been adopted by the local jurisdiction and Approved by Ecology

https://ecology.wa.gov/aberdeen-approved-smp-august-2017

Aberdeen Attachment A: Findings and Conclusions

Ecology�s formal description of the local SMP update process and conclusions regarding consistency with state laws and rules

https://ecology.wa.gov/aberdeen-attachment-a-findings-and-conclusions

Aberdeen Attachment B: Required Changes

This document presents changes to the SMP required to comply with state laws and rules

https://ecology.wa.gov/aberdeen-attachment-b-required-changes

Aberdeen Attachment C: Recommended Changes

This document presents changes recommended to clarify the SMP

https://ecology.wa.gov/aberdeen-attachment-c-recommended-changes

Battery Stewardship Rule Advisory Committee 9-23-24 Meeting Agenda

This is the meeting agenda for the Battery Rulemaking Advisory Committee's Sept. 23, 2024 meeting.

https://ecology.wa.gov/9-23-24-meeting-agenda

Battery Stewardship Rule Advisory Committee 9-23-24 meeting read-along document

This is the meeting read-along document for the Battery Rulemaking Advisory Committee's Sept. 23, 2024 meeting.

https://ecology.wa.gov/9-23-24-meeting-read-along-document