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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Tire carrier businesses list

This is a regularly updated list of tire carrier businesses in Washington.

https://ecology.wa.gov/tire-carrier-businesses-list

Licensed Tire Handlers

A PDF file of companies licensed to haul waste tires in Washington state.

https://ecology.wa.gov/tiretransporterlist

Tips for secure loads - Text only format

Text only format of tips for securing cargo loads

https://ecology.wa.gov/tips-for-secure-loads-text-only-format

Tigerfloc Functional Equivalency

Ecology finds Tigerfloc functionally equivalent to the flocculent chemicals identified in Best Management Practice C250 (Construction Stormwater Chemical Treatment) for stormwater management. Contractors may use Tigerfloc as a replacement for other approved chemicals such as ChitoSan Acetate when operating an enhanced sand filtration system on construction sites.

https://ecology.wa.gov/tigerflockfunctionallyequivalent

Tier 1 Calculator for Renewable Diesel (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced renewable diesel. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-renewable-diesel-wac-173-2

Tier 1 Calculator for Renewable Diesel (WAC 173-424) 07-18-22

This is the (Tier 1) simplified calculator for conventionally-produced renewable diesel. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-renewable-diesel-wac-173-1

Tier 1 Calculator for Starch-Fiber Ethanol (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced starch and fiber ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-starch-fiber-ethanol-wac-2

Tier 1 Calculator for Starch-Fiber Ethanol (WAC 173-424) 07-15-22

This is the (Tier 1) simplified calculator for conventionally-produced starch and fiber ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-starch-fiber-ethanol-wac-1

Tier 1 Calculator for Starch-Fiber Ethanol (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced starch and fiber ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-starch-fiber-ethanol-wac-173

Tier 1 Calculator for Sugarcane-Derived Ethanol (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced sugarcane-derived ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-sugarcane-derived-ethano-2

Tier 1 Calculator for Sugarcane-Derived Ethanol (WAC 173-424) 07-18-22

This is the (Tier 1) simplified calculator for conventionally-produced sugarcane-derived ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-sugarcane-derived-ethano-1

Tier 1 Calculator for Sugarcane-Derived Ethanol (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced sugarcane-derived ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-sugarcane-derived-ethanol-wa

Tier 1 calculator manual (WAC 173-424) 11-22

This is the November 2022 instruction manual for Tier 1 simplified carbon intensity calculators. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-manual-wac-173-424-11-22

Tier 1 calculator manual (WAC 173-424) 07-20

This is the instruction manual for Tier 1 simplified carbon intensity calculators. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-manual-wac-173-424-07-20

Tires work group notes - Dec 18, 2014 (revised Mar 17, 2015)

https://ecology.wa.gov/tires-work-group-notes-dec-18-2014-revised-mar

Tires work group notes - July 9, 2015

https://ecology.wa.gov/tires-work-group-notes-july-9-2015

Timelines for continuing permittees

Timelines for continuing Western Washington Phase II Municipal Stormwater Permittees

https://ecology.wa.gov/timelinephase2continuing

Timelines for new permittees

Timelines for new Western Washington Phase II Municipal Stormwater Permittees

https://ecology.wa.gov/timelinephase2new

Tipping Fees Map 2023

This map show landfill tipping fees by county in Washington.

https://ecology.wa.gov/tipping-fees-map-2023

Tipping Fees Data 2023

This spreadsheet lists tipping fees in Washington by county.

https://ecology.wa.gov/tipping-fees-data-2023