Mar. 23, 2017 Washington Department of Ecology

Construction Stormwater General Permit Final Modification

The Washington State Department of Ecology (Ecology) issued the modified Construction Stormwater NPDES and State Waste General Permit (CSWGP) on March 22, 2017. The permit modification will be effective on May 5, 2017, and expires December 31, 2020. The modification was in response to an Appeal and Settlement Agreement.

Public Notice Process and Response to Comments
The draft CSWGP modification, fact sheet addendum, and draft application modification were available for review and public comment from December 21, 2016 through February 10, 2017. Ecology held an informational workshop and a public hearing on the draft permit modification. Ecology received two public comment letters. Ecology responded to public comments in Appendix D of the Fact Sheet Addendum, the Response to Public Comments on the Draft Permit Modification. You may download this document from Ecology’s CSWGP website:

Requesting Copies of the CSWGP and Other Documents
You may download copies of the Final CSWGP modification, modification Response to Comments, and other CSWGP-related documents from the Ecology’s CSWGP website:
You may request hardcopies of the documents from Dena Jaskar at or (360) 407-6401.

Applying for Coverage under the CSWGP
New or unpermitted construction operations may obtain permit coverage by submitting a complete permit application to Ecology and satisfying all applicable public notice and State Environmental Policy Act (SEPA) requirements (WAC 173-226-200). The CSWGP application is electronic that requires applicants to login to SecureAccess Washington (SAW) at If you have questions about the online application, please contact technical assistance staff at, (800) 633-6193/option 3, or (360) 407-7097 (Olympia Area).

Appeal Options
The terms and conditions of this general permit modification, being issued March 22, 2017, may be appealed only by filing an appeal in writing to the Pollution Control Hearings Board (PCHB) and by serving it upon Ecology at the addresses below. E-mail is not accepted. Appeals of the general permit modification must be made within 30 days of issuance or receipt, whichever is later (see RCW 43.21B) (“RCW” is the Revised Code of Washington). The procedures and requirements for the appeal process are contained in RCW 43.21B.310. An appeal must be filed with:

Address and Location Information:
Street Addresses:
Mailing Addresses:
Department of Ecology
Attn: Appeals Processing Desk
300 Desmond Drive SE
Lacey, WA 98503
Department of Ecology
Attn: Appeals Processing Desk
PO Box 47608
Olympia, WA 98504-7608
Pollution Control Hearings Board
1111 Israel Road SW, Suite 301
Tumwater, WA 98501

Pollution Control Hearings Board
PO Box 40903
Olympia, WA 98504-0903

If you have questions about this letter, please contact Amy Moon at or (360) 407-6467.