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Water Quality Program

Construction Stormwater General Permit

Reapplication Instructions and Information
All Permittees must reapply for the Construction Stormwater General Permit by July 3, 2015 (180 days before the expiration of the current permit) per Section G8 of the current permit. Permittees can electronically reapply in a secure, easy to use online system.

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:

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

Ecology will revise and reissue the Construction Stormwater General Permit in 2015
The current Construction Stormwater General Permit (CSWGP) will expire December 31, 2015. Current permit holders (Permittees) must reapply for permit coverage by July 3, 2015. Ecology will mail reapplication instructions to all existing Permittees in April 2015. Ecology plans to issue the new CSWGP in December 2015 with an effective date of January 1, 2016.

Ecology held four (4) Listening Sessions as a forum for interested parties to provide informal feedback on the current CSWGP as well as feedback on the proposed changes to the CSWGP.

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 six 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.




Mail reapplication instructions to existing Permittees to reapply for permit coverage

April 2015

Renewal application due date July 3, 2015 (180 days prior to expiration). Internet based application.

Publish Draft Permit and Fact Sheet

July 1, 2015

Begin Public Comment Period for Draft CSWGP.
~40 days

Public Workshops

July 14, 2015 1p.m.

Water Resources Education Center 4600 SE Columbia Way
Vancouver, WA 98661
(360) 497-7111

July 16, 2015, 1 p.m.
Mount Vernon

Skagit Station
105 E. Kincaid
Mount Vernon, WA 98273
(360) 757-4433

July 21, 2015, 1 p.m.
Moses Lake

Moses Lake Fire Station
701 E Third Street
Moses Lake, WA 98837
(509) 765-2204

July 29, 2015, 1 p.m.

South Seattle Community College
Georgetown Campus / C122
6737 Corson Avenue S.
Seattle, WA  98102
(206) 934-5350

July 30, 2015, 1 p.m.
online webinar
website link
Click "More Information" for meeting info and call-in options
August 5, 2015, 1 p.m.
University Place

Workshops and Hearing
Pierce County Environmental Services Building
9850 64th Street W.
University Place, WA  98467
(253) 798-4047
Public Hearing August 5, 2015

Directly following the 1 p.m. Workshop
Pierce County Environmental Services Building 9850 64th Street W.
University Place, WA  98467
(253) 798-4047

Permit Reapplications Due

July 3, 2015

Due 180 days prior to expiration of permit.

Close Public Comment Period

August 10, 2015

Public Comments must be postmarked or emailed by midnight.

Issue Final Permit

December 2, 2015

Copies mailed to all permit holders.

Final Permit Effective

January 1, 2016

Old permit expires, new permit is effective.

Note: dates/locations subject to change. Visit our CSWGP webpage for the most up to date information.


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.

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 listserv


It’s Time to Reapply
All Permittees must reapply by July 3, 2015. Permittees can now reapply online.

Erosivity Waiver Calculator

Construction Stormwater Site Inspection Form

Online Application (eNOI) Now Available

Sampling Frequently Asked Questions

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.

Sign up for the Construction Stormwater General Permit email list