Research & Data - Washington State Department of Ecology

Design requirements for infiltration trenches

Design requirements for infiltration trenches with soils considered a treatment BMP

https://ecology.wa.gov/infiltration-trench-guidance

June 12 Director Bellon Letter

This letter to EPA from Director Bellon asking to cease action on Washington's water quality standards.

https://ecology.wa.gov/june-12-director-bellon-letter

Bioassessment Alternatives Comments to support refinements to Water Quality Policy 1-11

2017 comments by interagency team about Bioassessment Alternatives to support refinements to Water Quality Policy 1-11, the Water Quality Assessment and Total Maximum Daily Load Programs

https://ecology.wa.gov/interagencyteambioassessaltscomment

Letter to Chairman Barrossa Senate Committee on Environment and Public Works

A letter from the Washington Department of Ecology, signed by Director Maia Bellon, to Senators John Barrsso and Tom Carpenter, Chairman and ranking member of the Senate Environment & Public Works Committee, respectively, setting the record straight on why a water quality certification was denied to Millennium Bilk Terminals - Longview.

https://ecology.wa.gov/letter-to-chairman-barrossa

Letter to Colonel Mark Geraldi, U.S. Army Corps of Engineers

A letter to Colonel Mark Geraldi, U.S. Army Corps of Engineers, from the Washington Department of Ecology, signed by Director Maia Bellon, expressing deep concern over its restarting the federal permitting process for Millennium Bulk Terminals in Longview.

https://ecology.wa.gov/letter-to-colonel-geraldi

Industrial Stormwater Monthly Site Inspection Form

Use this form for your monthly inspections if you are industrial stormwater permit holder. Inspections must be conducted by a person with the knowledge and skills to assess conditions and activities that could impact stormwater quality at the facility, and evaluate the effectiveness of best management practices required by this permit. Retain a copy of the completed and signed form.

https://ecology.wa.gov/industrial-stormwater-monthly-site-inspection-form

Industrial Stormwater Pollution Prevention Plan (SWPPP) Template

Use this template to guide you through developing a Stormwater Pollution Prevention Plan that is consistent with the Industrial Stormwater General Permit SWPPP.

https://ecology.wa.gov/industrial-stormwater-pollution-prevention-plan-te

Water Decontaminator

Ecology finds this water decontaminator is functionally equivalent to the catch basin insert for stormwater control. While this product does not meet Washington's water quality performance criteria, it may be used in retrofit or construction situations to provide some level of TSS removal for stormwater.

https://ecology.wa.gov/invreshpaoluccio

Kittitas County Functional Equivalency Letter for Solid Waste Sediment Control Compost Wattles

Ecology finds the Kittitas County Solid Waste Sediment Control Compost Wattles produced at their compost facility is functionally equivalent to Best Management Practice C235 Wattles for stormwater management.

https://ecology.wa.gov/kittitascoletter

Irrigation System Aquatic Weed Control NPDES General Permit Fact Sheet and Response to Comments

https://ecology.wa.gov/irrigationfsrtc051612

Irrigation System Aquatic Weed Control NPDES General Permit

https://ecology.wa.gov/irrigationpermit051612

Instream assessment of biota and migration patterns final report

Study of aquatic life and migration patterns in the Palouse River.

https://ecology.wa.gov/instream-assessment-of-biota-and-migration-pat-1

Industrial Stormwater General Permit

We issued the Industrial Stormwater General Permit in 2014. This is a National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for stormwater discharges associated with industrial activities.

https://ecology.wa.gov/industrialstormwatergeneralpermit

Instream assessment of biota and migration patterns study design

Study of aquatic life and migration patterns in the Palouse River.

https://ecology.wa.gov/instream-assessment-of-biota-and-migration-pattern

ISGP Appendix 3

Appendix 3 - SWPPP Certification Form

https://ecology.wa.gov/isgp-appendix-3

Appendix 5 to the Industrial Stormwater General Permit

This is a list of dischargers subject to TMDL requirements in the Industrial Stormwater General Permit.

https://ecology.wa.gov/iswgp-appendix-5

CSWGP Site Inspection Form

All Permittees must inspect the construction site and monitor water discharging from the construction site. Inspections must be summarized in an Inspection Report or Checklist and kept with the Site Log Book. These requirements are listed in the CSWGP - S4. Monitoring Requirements, Benchmarks and Reporting Triggers.

https://ecology.wa.gov/inspectionform

Powerpoint Reissuance of Phase I &Western Washington Phase II Municipal Stormwater Permits

Introductory slides for the public meetings in 2017 about the Reissuance of Phase I &Western Washington Phase II Municipal Stormwater Permits.

https://ecology.wa.gov/intro_p_2017publicmeetings

Lacey meeting notes for MS4 reissuance 2017

Notes from 3/2/17: W.WA Municipal Stormwater Permit Reissuance public meeting w/webinar option– Lacey

https://ecology.wa.gov/laceymtg-notes03022017

INTERAGENCY AGREEMENT NO. 9F9U BETWEEN THE STATE OF WASHINGTON DEPARTMENT OF ECOLOGY AND PORT OF SEATTLE

This agreement between Ecology and the Port of Seattle about Cruise Ships

https://ecology.wa.gov/interagency-agreement-ecology-and-port-of-seattle