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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CRITFC Request for TDG STM
This is a letter from the Columbia River Inter-tribal Fish Commission requesting Ecology to modify its total dissolved gas standards on the lower Snake and Columbia rivers.
https://ecology.wa.gov/critfc-request-for-tdg-stm
CR101_173_219
Rule pre-proposal form
https://ecology.wa.gov/cr101form173_219
Ecology Water Quality Funded Facility Projects Cost and Effectiveness Analysis Certification Form
Ecology Water Quality Funded Facility Projects Cost and Effectiveness Analysis Certification Form
https://ecology.wa.gov/cost-and-effectiveness-analysis-certification-form
Ecology Water Quality Funded Facility Projects Specification Insert
For Ecology Water Quality Funded Facility Projects, this is the Specification Insert
https://ecology.wa.gov/cwsrf-specification-insert
CR-102 Continuance Form (WAC 173-201A) 08/15/18
This is a rulemaking document (CR-102 Continuance) to correct the mailing addresses for the WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington comment period.
https://ecology.wa.gov/cr-102-continuance-form-wac-173-201a-08-15-18
CR101 Notice to Interested Parties (WAC 173-224)
This is the notice that was mailed to all permitees.
https://ecology.wa.gov/cr101-notice-to-interested-parties
CR-102 Form AO# 16-07
This is a rulemaking proposal (CR-102) for WAC 173-201A Water Quality Standards for Surface Waters of the State of Washington
https://ecology.wa.gov/cr-102-form-wac-173-201a-07-17-18
Ecology Water Quality Funded Facility Projects Specification Insert for Pre Selection Contracts
Ecology Water Quality Funded Facility Projects Specification Insert for Pre Selection Contracts
https://ecology.wa.gov/cwsrf-specification-insert-for-pre-selection-contr
Ecology Water Quality Funded Facility Projects Specification Insert for Service Contracts
Ecology Water Quality Funded Facility Projects Specification Insert for Service Contracts
https://ecology.wa.gov/cwsrf-specification-insert-for-service-contracts
Ecology Water Quality Grant/Loan Funding Cultural Resources Review Process Flow
Ecology Water Quality Grant/Loan Funding Cultural Resources Review Process Flow
https://ecology.wa.gov/cultural-resources-review-process-flow
Corrections and Clarifications to the Stormwater Management Manual for Eastern Washington (2004)
This summarizes all the corrections and clarifications to the Eastern Washington Stormwater management manual from 2004
https://ecology.wa.gov/correctionsclarificationsstormwatermanagementmanua
Appeal of the CSWGP
11/8/15 appeal of the CSWGP that went into effect 1/1/16
https://ecology.wa.gov/contractorsvsecology-12-21-15
Construction Stormwater General Permit
Stormwater runoff from construction sites can carry muddy water, debris, and chemicals into local waterways. Sediments, chemicals, and debris can harm aquatic life and reduce water quality. Following the requirements in the Construction Stormwater General Permit (CSWGP) results in discharges that help control and reduce water pollution.
https://ecology.wa.gov/cswgpfinalmod2017
Fact Sheet Addendum with Response to Comments for the CSWGP Modification
Fact Sheet Addendum for the CSWGP Modification dated March 22, 2017 (includes Response to Comments)
https://ecology.wa.gov/cswgpmod2017responsetocomments
2015 Construction Stormwater General Permit Public Comments / Response to Comments
Public Comments / Response to Comments for the 2015 Construction Stormwater General Permit Reissuance process
https://ecology.wa.gov/cswgp2016responsetocomments
2010 Construction Stormwater General Permit Fact Sheet
Detailed explanation of the 2010 Construction Stormwater General Permit
https://ecology.wa.gov/cswgpfs072110
Public Workshop PowerPoint Slideshow for 2015 Construction Stormwater Permit Reissuance
The 2015 Construction Stormwater Permit Reissuance Public Workshop PowerPoint Slideshow explains the process, schedule, and proposed changes to the permit.
https://ecology.wa.gov/cswgppblcwrkshp2015
2010 Construction Stormwater General Permit
This is the previous Construction Stormwater General Permit, effective from January 1, 2011 to December 31, 2015.
https://ecology.wa.gov/cswgppermit120110
2010 Construction Stormwater General Permit Response to Comments
Response to Comments on the 2010 Construction Stormwater General Permit reissuance.
https://ecology.wa.gov/cswgpresponse120110
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