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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Using Arc Reader to Locate 12-Digit HUCs

Instructions for using the Arc Reader to locate 12-Digit HUCs

https://ecology.wa.gov/using-arc-reader-to-locate-12-digit-hucs

UST-closure-packet

Instructions for closing an Underground Storage Tank

https://ecology.wa.gov/ust-closure-packet

UST COVID-19 Stakeholder letter, March 27, 2020

This letter is to inform you of the Government Public Health and Safety Restrictions in regards to implementation of the Underground Storage Tank requirements (UST) imposed by coronavirus (COVID-19).

https://ecology.wa.gov/ust-covid-19-stakeholder-letter-march-27-2020

UST Service Provider list

List of approved underground storage tank service providers with contact and service-area information

https://ecology.wa.gov/ustserviceproviders

Draft UST Service Provider list

This is a draft list of certified underground service tanks service providers.

https://ecology.wa.gov/ust-service-provider-list-10-01-17

Updating the Air Toxics Rule (WAC 173-460)

This is the overview of rulemaking for WAC 173-460, Controls for New Sources of Toxic Air Pollutants,

https://ecology.wa.gov/updating-the-air-toxics-rule

Vader-biosolids-site-plan

This document maps the site associated with a proposal by the Vader Wastewater Treatment Plant to remove biosolids from their facility for land application.

https://ecology.wa.gov/vader-biosolids-site-plan

Unofficial rule language - readable format (WAC 173-442) 05/31/16

This is Unofficial rule language - readable format for WAC 173-442.

https://ecology.wa.gov/unofficial-rule-language-readable-format-wac-17

Urban Raingarden

Determined to be functionally equivalent to a Bioretention Planter or Planter Box

https://ecology.wa.gov/urban-raingarden

Utility Carbon Intensity Calculator (WAC 173-424) 11-28-22

This is the November 28, 2022 spreadsheet of Washington utility carbon intensity calculator.

https://ecology.wa.gov/utility-carbon-intensity-calculator-wac-173-424-11

Utility Carbon Intensity Calculator (WAC 173-424) 06-30-22

This is the June 30, 2022 spreadsheet of Washington utility carbon intensity calculator.

https://ecology.wa.gov/utility-carbon-intensity-calculator-wac-173-424-06

Utility Carbon Intensity Calculator (WAC 173-424) 04/04/22

This is the April 4, 2022 spreadsheet of Washington utility carbon intensity calculator.

https://ecology.wa.gov/utility-carbon-intensity-calculator-wac-173-424-04

Utah GREET model (WAC 173-424) 11-28-22

This spreadsheet is the final Utah GREET model, fuel carbon intensity calculator for Clean Fuels Program, November 28, 2022.

https://ecology.wa.gov/utah-greet-model-wac-173-424-11-28-22

Utah GREET model (WAC 173-424) 07-15-22

This spreadsheet is the Utah GREET model, fuel carbon intensity calculator for Clean Fuels Program, July 15, 2022.

https://ecology.wa.gov/utah-greet-model-wac-173-424-07-15-22

Universal Recycling Technologies

This document includes the audit for Universal Recycling Technologies.

https://ecology.wa.gov/universal-recycling-technologies

Union Gap Approved SMP - Yakima County Regional SMP - January 2010

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

https://ecology.wa.gov/union-gap-approved-smp-yakima-county-regional-sm

University Place Approved SMP September 2016

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

https://ecology.wa.gov/university-place-approved-smp-september-2016

Updated Preliminary Draft Rulemaking Language WAC 173-55

This Preliminary Draft Rulemaking Language for WAC 173-55 is from November 2023.

https://ecology.wa.gov/updated-preliminary-draft-rulemaking-language-wac-173-55

Unified Command Statement: Local wildlife activity near Hill Ditch

Statement from Unified Command about Local Wildlife Activity around Hill Ditch

https://ecology.wa.gov/unified-command-statement-local-wildlife-activity-near-hill-ditch