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Water Quality Program

Industrial Stormwater General Permit

Ecology will revise and reissue the Industrial Stormwater General Permit in 2014

The current Industrial Stormwater General Permit (ISGP) will expire on January 1, 2015. Current permit holders must reapply for permit coverage by July 5, 2014. Ecology mailed reapplication instructions to all existing permittees in May 2014. Ecology plans to issue the new ISGP in late 2014, with an effective date of January 1, 2015.

Ecology has held 5 listening sessions that provided a forum for interested parties to provide informal feedback on the current ISGP, and suggestions of how the ISGP should be revised.

On May 7, Ecology released the draft ISGP, which is available for public comment through July 11, 2014. During the public comment period Ecology hosted a series of public workshops, and two public hearings. The public comment period closed July 11, 2014. Ecology plans to issue the new, final ISGP on November 19, 2014, with an effective date of January 1, 2015.

Questions? Contact Jeff Killelea at 360-407-6127 or jeff.killelea@ecy.wa.gov

Draft Permit

2014 Industrial Stormwater General Permit Reissuance Schedule




Public Listening Sessions

Five Listening Sessions in February and March 2014

Ecology presented information on possible changes, solicited feedback from public, answered questions, etc.

Mail renewal application instructions to existing permittees

Late April 2014

Renewal application due date July 5, 2014
(180 days prior to expiration).
Internet-based application.

Publish Draft Permit and Fact Sheet

May 7, 2014

Begin Public Comment Period for Draft ISGP. ~44 days.

Public workshops & Hearings

May 19, 2014
1 p.m.
Tacoma Public Workshop

La Quinta Inn
1425 East 27th St., Tacoma, WA

May 20, 2014
1 p.m.
Mount Vernon, WA
Public Workshop

Skagit Station
105 E. Kincaid, Mount Vernon, WA

May 22, 2014
1 p.m.
Moses Lake
Public Workshop

Moses Lake Fire Station
701 E Third St., Moses Lake, WA

May 28, 2014
1 p.m.
Vancouver, WA
Public Workshop

Water Resources Education Center
4600 SE Columbia Way, Vancouver, WA

May 29 and June 16, 2014
1 p.m.
Public Workshops & Hearings

South Seattle Community College
Georgetown Campus / C122
6737 Corson Ave S., Seattle, WA

Close Public Comment Period

July 11, 2014
New!  Ecology has extended the public comment period by an additional 21 days.

Public comments must be postmarked or emailed by midnight.

Issue Final Permit

November 19, 2014

Copies mailed to all permit holders

Final Permit Effective

January 1, 2015

Old permit expires, new permit effective


Current Permit Documents


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

Permit & Documents - Permit documents, appeal documents, list of dischargers.

Discharge Monitoring Reports (DMRs)

Permit Applications and Forms - Conditional No Exposure (CNE) application and eligibility criteria, public notice requirements.

Guidance - Engineering Reports, Developing a Stormwater Pollution Prevention Plan, FAQs, Reducing Zinc, How to Sample.

Find a Lab to Analyze Stormwater Samples

Questions & Answers

Historical Information - Public Comments from previous permits and other documents.

Sign up for the Industrial Stormwater General Permit information email list


New! 2014 ISGP Reissuance Schedule and Diagram

Guidelines for the Preparation of Industrial Stormwater General Permit Engineering Reports

CNE Eligibility Criteria

Guidance for Vehicle and Metal Recyclers

Frequently Asked Questions

Annual Report Form

Adding or Changing Sampling Locations

Permit Compliance: Monitoring and Reporting

ECOSS Presents: Industrial Stormwater Management Workshops

SWPPP Template
-Word docx version
-Word doc version

Monthly Site Inspection Form
-Word docx version
-Word doc version

New! A Tale of the Swale: Getting turbid water off the streets (Water Quality story)