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Temporary Wastewater Discharges - General Permit

Ohio EPA has issued a final general National Pollutant Discharge Elimination System (NPDES) permit for temporary wastewater discharges in Ohio. Temporary discharges may be associated with some type of facility or site cleanup, or one-time emergency discharge due to unusual or short-term circumstances, or discharges from a pilot project or test facility. The type of pollutants found in temporary discharges may be quite variable due to the differences in projects. Also, flow rates could be quite different depending on the size of the project. The concentration of the discharges must be de minimus, defined as less than ten percent of the waste load allocation for all applicable pollutants. In addition, temporary discharges are defined as facilities or projects that discharge for a time period not to exceed 60 days.

Temporary Wastewater Discharges Permit Renewal

Current General Permit - OHT000004

Effective Date: July 1, 2022
Expiration Date: June 30, 2027

Draft General Permit - OHT000004

Public Notice Date: April 22, 2022
Comments Due Date: June 15, 2022

The draft renewal permit is available for comment. To provide comments, please e-mail epa.dswcomments@epa.ohio.gov by June 15, 2022, with the draft general permit number OHT000004 in the subject line.

On June 8, 2022, Ohio EPA will hold a virtual information session and hearing to provide an overview of the Temporary Discharge General Permit renewal.

Previous General Permit - OHT000003

Effective Date: June 1, 2017
Expiration Date: May 31, 2022