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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Certificate of compliance 2023

Manufacturers that produce food packaging sold in Washington must fill out a Certificate of Compliance to show they meet the PFAS in food packaging rules

https://ecology.wa.gov/certificate-of-compliance-2023

Ch173350_3rdPrelimDraft121516-PartFive.pdf

Part Five: 500 Groundwater monitoring, -600 Financial assurance requirements, -700 Permits and local ordinances, -710 Permit application and issuance, -715 General permit application requirements, -900 Remedial action, and -995 Soil and sediment use criteria.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partfive-pdf

Requirements for 401 Water Quality Certification Request

This table describes the required elements, documents, and actions to submit your certification request to the Department of Ecology.

https://ecology.wa.gov/certification-requirements-table

Ch173350_3rdPrelimDraft121516-PartFour.pdf

Part Four: 400 Limited purpose landfills, -410 Inert waste landfills, and -490 Other methods of solid waste handling.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partfour-pdf

Ch173350_3rdPrelimDraft121516-PartOne.pdf

Part One: 010 Purpose, -020 Applicability, -021 Determination of solid waste, -025 Owner responsibilities for solid waste, -030 Effective dates, -040 Performance standards, -100 Definitions, and -200 Beneficial use permit exemptions.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partone-pdf

Ch173350_3rdPrelimDraft121516-PartThree.pdf

Part Three: 310 Transfer stations and drop box facilities, -320 Piles used for storage or treatment, -330 Surface impoundments and tanks, -350 Waste tire storage, -355 Waste tire transportation, and -360 Moderate risk waste handling.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partthree-pdf

Ch173350_3rdPrelimDraft121516-PartTwo.pdf

Part Two: 210 Recycling and material recovery facilities, -220 Composting facilities, -225 Other organic material handling activities, -230 Land application, -240 Energy recovery and incineration facilities, -250 Anaerobic digesters, and -300 On-site storage, collection and transportation standards.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-parttwo-pdf

Chambers Bay BNSF train derailment press release

Press release for the Chambers Bay BNSF train derailment

https://ecology.wa.gov/chambers-bay-bnsf-train-derailment-press-release

Chambers Bay BNSF train derailment summary of findings

Summary of findings for the Chambers Bay BNSF train derailment

https://ecology.wa.gov/chambers-bay-bnsf-train-derailment-summary

CedargroveVisSOCK

This documents that Cedar VIS Sock is functionally equivalent to BMP C235 Wattle Construction Stormwater BMP.

https://ecology.wa.gov/cedargrovevissock

VIS System for Stormwater runoff filtration

We find the VIS system functionally equivalent to a bioretention planter or planter box.

https://ecology.wa.gov/cedargrovevissystem

Chart of Changes between the 2005 and 2012 Stormwater Management Manual for Western Washington

This shows which sections changed between the 2005 and 2012 SWMMWW

https://ecology.wa.gov/changechart

CESF operator list

List of certified CESF operators.

https://ecology.wa.gov/cesf-operator-list-1

Consumer Environmental Index Background Information

A detailed explanation of the process for determination of the Consumer Environmental Index.

https://ecology.wa.gov/ceibackground4-23-12

Central Waste Complex Agreed Order and Stipulated Penalty - January 24, 2014

Agreed Order and Stipulated Penalty between U.S. Department of Energy and CH2M Hill.

https://ecology.wa.gov/central-waste-complex-agreed-order-and-stipulated

Central Waste Complex Order - Exhibit A

Required Actions Under Chapter 173-303 WAC.

https://ecology.wa.gov/central-waste-complex-order-exhibit-a

Central Waste Complex Order - Exhibit B

Dangerous Waste Management Units.

https://ecology.wa.gov/central-waste-complex-order-exhibit-b

Central Waste Complex Order - Exhibit C

Dangerous Waste Violations

https://ecology.wa.gov/central-waste-complex-order-exhibit-c

Certificate of compliance: PFAS in food packaging 2024

This is the certificate of compliance for food packaging manufacturers for items regulated as of May 2024.

https://ecology.wa.gov/certificate-of-compliance-2024