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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Aquatic Mosquito Control General Permit areas of restricted larvicide and adulticide use

Areas of restricted larvicide and adulticide use for Aquatic Mosquito Control General Permit.

https://ecology.wa.gov/03042015esalocations

West-Lincoln-Application

West Lincoln Project application for a biosolids beneficial use facility

https://ecology.wa.gov/002westlincolnapplication

Regional haze reasonable progress goals - draft

Draft chapter Washington regional haze plan reasonable progress goals.

https://ecology.wa.gov/011121-draft-sip-regional-haze-reasonable-progress

Draft regional haze strategy

Draft SIP plan - regional haze strategy chapter

https://ecology.wa.gov/011121-draft-sip-regional-haze-strategy

Aquatic Mosquito Control General Permit Fact Sheet

Fact Sheet for the Aquatic Mosquito Control General Permit.

https://ecology.wa.gov/03042015factsheet

Aquatic Mosquito Control General Permit application (Notice of intent)

Application (Notice of intent) for the Aquatic Mosquito Control General Permit

https://ecology.wa.gov/03042015noi

Draft Washington regional haze plan four-factor analysis

Draft chapter Washington regional haze plan four-factor analysis

https://ecology.wa.gov/011121-draft-washington-regional-haze-plan-four-fa

Federal land managers - draft response to comments

Draft response to comments from federal land managers on proposed updates to regional haze plan.

https://ecology.wa.gov/011121-flm-response-to-comments-draft

Aquatic Mosquito Control General Permit SEPA checklist

SEPA checklist for the Aquatic Mosquito Control General Permit

https://ecology.wa.gov/03042015sepachecklistt

Aquatic Mosquito Control General Permit SEPA determination of non-significance

SEPA DNS (determination of non-significance) for the Aquatic Mosquito Control General Permit

https://ecology.wa.gov/03042015sepadns

Aquatic Mosquito Control General Permit SEPA final determination of non-significance

Final SEPA determination of non-significance for the Aquatic Mosquito Control General Permit.

https://ecology.wa.gov/05112015sepadnsfinalrev

Draft Zostera japonica Management General Permit application (Notice of intent)

Draft Zostera japonica Management General Permit Notice of Intent (NOI)

https://ecology.wa.gov/01022014draftzjnoi

05-03-2017 PRO-C Meeting

05-03-2017 PRO-C Meeting agenda and summary

https://ecology.wa.gov/05-03-2017-pro-c-meeting-agenda-and-summary

Public meeting powerpoint for webinar at Ecology on MS4 reissuance

Powerpoint for public meeting in October 2017 of Reissuance of Phase I &Western Washington Phase II Municipal Stormwater Permits.

https://ecology.wa.gov/10-12-17prelimdraft_webinarfinal

Agenda for Introduction to the Preliminary Drafts of the Phase I and Western Washington Phase II Municipal Stormwater Permits.

This is an agenda of a meeting presenting preliminary draft sections of the Permits and the Stormwater Management Manual for Western Washington.

https://ecology.wa.gov/10-12-17pubmtgagenda

Zostera japonica Management General Permit Fact sheet

Draft detailed explanation of Zostera japonica Management General Permit.

https://ecology.wa.gov/01022014zjdraftfactsheet

2010 SWG Key recommendations

https://ecology.wa.gov/063010keyrecommendations

Errata sheet for the Zostera japonica Management FEIS

2014 Corrections and Clarifications on the Zostera japonica Management General Permit.

https://ecology.wa.gov/03282014zjfeiserrata

Phase II only S5.C.X Source Control

Western WA Phase II Municipal Stormwater Permit Preliminary Draft Permit Section: Source Control S5.C.X (proposed new section to add).

https://ecology.wa.gov/10-3-17_prelimsourcecontrolfinal

Vantage Data Center Health Impact Assessment (Second Tier Review) Recommendation, April 2022

This is the April 2022 Health Impact Assessment (Second Tier Review) Recommendation for Vantage Data Center.

https://ecology.wa.gov/202204vantagetier2rec