Sheetflow Construction Erosion and Sediment Control

July 9, 2019

Managing Construction Stormwater on Concrete Tiltup Building Project

Video: David Jenkins

March 19, 2019

Unrolled Asphalt Berm Edge Clean Water Diversion

Here is another cool trick for keeping clean water out of your project. The contractor put down ATB (asphalt-treated base) and asphalt but didn’t roll (compact) the edge, which left a 3 or 4 inch berm. Clean rain water was kept on the asphalt rather than flowing off into the dirt shoulder and disturbed areas.

August 15, 2012

Geotechnical Exploration Stormwater Pollution Prevention Plan (SWPPP)

Download: Geotechnical Exploration Storm water Pollution Prevention Plan (SWPPP)

This Stormwater Pollution Prevention Plan (SWPPP) template for geotechnical exploration will save time when planning for any type of boring, drilling and potholing operations. It includes a section that addresses unexpected, or unanticipated, contaminated soil. It can be edited and modified any way you want. It was developed for a government agency planning for a major, multi-year, capital improvement program.

February 25, 2011

Construction Stormwater General Permit

Construction Stormwater General Permit

Construction site operators are required to be covered by a Construction Stormwater General Permit if they are engaged in clearing, grading, and excavating activities that disturb one or more acres and discharge stormwater to surface waters of the state. Smaller sites may also require coverage if they are part of a larger common plan of development that will ultimately disturb one acre or more. Operators of regulated construction sites are required to:

  • Develop stormwater pollution prevention plans.
  • Implement sediment, erosion, and pollution prevention control measures.
  • Obtain coverage under this permit.

NEW! - 01/29/09 Ecology issues the Construction Stormwater General Permit December 1, 2010

WebDMRs and PARIS

Contact Us – Contact your Permit Administrator for permit assistance or your Regional Office for site specific questions.

Permit, Forms and Application – Permit, application, forms, and appeal information.

High Turbidity Reporting – Construction projects must report high stormwater turbidity results within 24 hours.  If you get a high result, call your Ecology regional office.

Resources and Guidance – DMRs, Stormwater monitoring,  manuals, 303(d) list information.

CESCL Training and Certification Programs

Historical Information – Pollution Control Hearing Board information, public comments.

Construction Stormwater General Permit.

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