This page contains documents related to the Industrial General Permit (IGP).
Certain industrial facilities are required to seek coverage under the general industrial storm water permit. Facilities most commonly covered in Wyoming are most mines (mineral mines are covered under the mineral mining permit, see above), facilities that produce cement products, many wood product facilities, airports, junk yards, and scrap recycling facilities. Coverage is based on the facility’s Standard Industrial Classification (SIC) code.
Please note that the general industrial storm water permit is not available to facilities where storm water runoff has the potential to discharge to class 1 waters. Facilities may apply for coverage under an individual storm water permit.
***All existing authorizations for industrial storm water coverage are being continued automatically at this time, and will NOT expire on 8/31/2022. A new Wyoming Industrial General Permit (IGP) is in the early stages of being drafted. We do not anticipate having a draft ready until October 2022. After that, it will have to go through peer review, a public comment phase (30 days), re-drafting to address comments, final review and then up the WDEQ chain of command for signature. We cannot accept applications/fees for extended coverage past 8/31/2022 until the new IGP is actually signed by our Administrator and Director and formally issued.
Additionally, a new permitting database is under development at WDEQ, so permittees should wait for further email notification from WDEQ with instructions for re-application. If you are aware of personnel changes at your organization that affect the contact information for your storm water permit(s), please contact Anita Rehner (307-777-5622, anita.rehner@
Beginning July 1, 2013 payment of permit fees for individual permits and general permit authorizations are required to be submitted with the permit application or NOI form. All storm water authorizations have variable fees that must be calculated depending upon the NOI date. The "Fee Calculator" should be used to determine the proper amount to be submitted with each NOI. Checks should be made out to the "Dept. of Environmental Quality, Water Quality Division.