Research & Data - Washington State Department of Ecology

Cost and Effectiveness Analysis Certification

Certification for analysis of cost and effectiveness recipients of Clean Water State Revolving Fund (CWSRF) loans

https://ecology.wa.gov/cost-and-effectiveness-analysis-certification

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

Conditional “No Exposure” Exemption Focus Sheet

Facilities with “no exposure” of industrial materials and activities to rain, snow, snowmelt, and/or runoff can apply for an exemption from coverage under the permit; this is called a Conditional No Exposure (CNE) exemption. This focus sheet explains that exemption.

https://ecology.wa.gov/cne-focus-sheet

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

https://ecology.wa.gov/cost-and-effectiveness-analysis-certification-form

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 Clean Watershed Needs Survey (CWNS) Program Overview for 2012

https://ecology.wa.gov/clean-watershed-needs-survey-cwns-program-overvi

Ecology Water Quality Clean Watershed Needs Survey (CWNS) Program Small Communities Survey Form 2012

https://ecology.wa.gov/clean-watershed-needs-survey-cwns-small-communit

Clima Cover

Letter verifying that ClimaCover All Weather Protective Systems can be used as an alternative to sandbags in stormwater control.

https://ecology.wa.gov/climacover

Interceptor ClimaCover

Ecology finds ClimaCover Interceptor Dike is equivalent to BMP C200 Interceptor Dam. The specifications for the check dam system must adhere to the specifications listed in this letter.

https://ecology.wa.gov/climacoverinterceptordikefea

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

Comparison formal draft to final Sand and Gravel General Permit

See the comparison from the formal draft to the final Sand and Gravel General Permit.

https://ecology.wa.gov/comparison-formal-draft-to-final

Sand & Gravel General Permit compared to Formal Draft Permit

This is a redline pdf showing the changes between the formal draft and the final permit for the 2016-2021 permit cycle.

https://ecology.wa.gov/comparisonformaldrafttofinal

Annual Report for Coast Seafoods

Annual report reviewing 2017 annual report for zostera japonica controls in Willapa Bay for Coast Seafoods.

https://ecology.wa.gov/coast-3011-annual-report

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