Research & Data

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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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Research & Data

Use this portal to filter and search for all of our scientific information.

Research & Data icon

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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Chehalis flood reduction project draft EIS presentation
Presentation of draft EIS for Chehalis Basin flood-reduction project
https://ecology.wa.gov/chehalis-draft-sepa-eis-presentation
Chehalis draft EIS - meeting handout for the proposed Chehalis River Basin Flood Damage Reduction Project
This handout provides an overview of the process and the ground rules for participating in the hearing.
https://ecology.wa.gov/chehalisdeis-handout-english
Preliminary Draft Revised WAC 173-331 12/02/15
This is a preliminary draft of the rule that stakeholders were asked to comment on
https://ecology.wa.gov/rulemaking-announcement-wac-173-331-12-02-15-1
Overview SEPA Draft Environmental Impact Statement for the Proposed Chehalis River Basin Flood Damage Reduction Project
This focus sheet describes the environmental review process and the public comment period with an overview of the applicant's proposed project.
https://ecology.wa.gov/chehalisdeis-focussheet-english
Borrador de la Declaración del Impacto Ambiental para el proyecto propuesto de reducción de daños por inundaciones en la cuenca del Río Chehalis
Esta hoja de enfoque describe el proceso de revisión ambiental y el período de comentarios públicos con una visión general del proyecto propuesto por el solicitante.
https://ecology.wa.gov/chehalisdeis-focussheet-espanol
Chehalis draft EIS - meeting handout for the proposed Chehalis River Basin Flood Damage Reduction Project
Este folleto proporciona una visión general del proceso y las reglas básicas para participar en la audiencia.
https://ecology.wa.gov/chehalisdeis-handout-espanol
Chehalis draft EIS - Summary of the proposed Chehalis River Basin Flood Damage Reduction Project
Nineteen-page summary of the project proposal and the environmental review process.
https://ecology.wa.gov/chehalisdeis-summary
Chehalis draft EIS - vicinity map for the proposed Chehalis River Basin Flood Damage Reduction Project
Map showing the location where Flood District's proposed projects would occur.
https://ecology.wa.gov/chehaliseis-vicinitymap
Chapter 4H Lab Control Log
WASTE TREATMENT AND IMMOBILIZATION PLANT CHAPTER 4H ANALYTICAL LABORATORY (LAB) CHANGE CONTROL LOG
https://ecology.wa.gov/chapter-4h
Chapter 6A Inspection Plan
WASTE TREATMENT AND IMMOBILIZATION PLANT CHAPTER 6A INSPECTION PLAN CHANGE CONTROL LOG
https://ecology.wa.gov/chapter-6a
Chapter 8 Personnel Training
WASTE TREATMENT AND IMMOBILIZATION PLANT CHAPTER 8 PERSONNEL TRAINING CHANGE CONTROL LOG
https://ecology.wa.gov/chapter-8
Chapter 173-185 WAC Rulemaking Public Hearing Presentation
Presentation for the Chapter 173-185 WAC Rulemaking Public Hearing
https://ecology.wa.gov/chapter-173-185-wac-rulemaking-public-hearing-pres
Chapter 173-350 WAC Solid Waste Handling Standards 1st Draft Responsive Summary Dec. 2016
Solid Waste Handling Standards 1st Draft Responsive Summary Dec. 2016
https://ecology.wa.gov/chapter-173-350-wac-solid-waste-handling-standards
Changes accapted formal sand and gravel general permit
After adding the edits, this is the formal draft Sand and Gravel General Permit.
https://ecology.wa.gov/changes-accapted-formal-sand-and-gravel-general-pe
Guide to Changes in the 2016 Sand & Gravel General Permit
This guide provides information on what has changed between the 2011 and 2016 Sand & Gravel General Permit. The guide is setup by permittee categories and NAICS / Ecology Codes. Refer to the appropriate categories below for your business (more than one category may apply to your operations). This document is only intended as a guide. Refer to the permit for more information.
https://ecology.wa.gov/changesguide2016
Sand & Gravel General Permit Formal Draft with redlines
Track Change PDF of Sand & Gravel General Permit Draft
https://ecology.wa.gov/changesshownsandgravelpermit2016
Chapter 173-925 WAC
This document is the Washington Administrative Code (WAC) for post-consumer recycled content in plastic containers.
https://ecology.wa.gov/chapter-173-925-wac
Chapter 173-187 WAC proposed rule language
Proposed rule language for Chapter 173-187 WAC
https://ecology.wa.gov/chapter-173-187-wac-proposed-rule-language
Chapter 317-50 WAC repeal language
Repeal language for Chapter 317-50 WAC
https://ecology.wa.gov/chapter-317-50-wac-repeal-language
Chapter 317-50 WAC repeal language (WAC 317-50) 6/14/24
Repeal language for Chapter 317-50 WAC
https://ecology.wa.gov/chapter-317-50-wac-repeal-language-wac-317-50-6-14-24
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