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:
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.
Resources and Guidance - DMRs, Stormwater monitoring, manuals, 303(d) list information.CESCL Database
Historical Information - Pollution Control Hearing Board information, public comments.
Get Ecology updates about the Construction Stormwater General Permit - Sign up for the Construction Stormwater General Permit email list
Ecology will revise and reissue the Construction
Stormwater General Permit in 2015
Before finalizing the new CSWGP, permit holders and other interested parties have an opportunity to review and submit comments on the draft CSWGP from July 1 through August 10, 2015. Ecology will consider all public comments before issuing the final CSWGP in December 2015, with an effective date of January 1, 2016.
Ecology will host a series of five public workshops to explain proposed changes to the CSWGP and answer questions. A public hearing will follow the workshop at University Place in Pierce County, allowing interested parties to provide oral testimony on the draft CSWGP.
Note: dates/locations subject to change. Visit our CSWGP webpage for the most up to date information.
Construction Stormwater General Permit Application Status - Check the status of your application.
Stormwater Pollution Prevention Plan Template - To use this template, save to your computer.
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