Illicit Discharges

Storm Water Plan - Illicit Discharge Detection and Elimination

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The Storm Water Management Plan is jointly managed by the Planning Department and Highway Department.

What is an Illicit Discharge?

An illicit discharge is considered to be anything entering the storm drains or system that is NOT storm water.

Examples of illicit discharges include dumping or spilling of materials, such as oil, grease, paint or other sources of pollution, into the storm drains, culverts, drainage ways or ditches.

Reporting Procedure

If you notice something that may be considered an illicit discharge, please call 605-394-2186 to report the problem.

Notification of Spills

As soon as any person responsible for a facility or operation, or responsible for emergency response for a facility or operation, has information of any known or suspected release of materials which are resulting or may result in illicit discharges or pollutants discharging into storm water, the Storm Drain System, or Waters of the State, said person shall immediately notify emergency response agencies of the occurrence via emergency dispatch services. 

In the event of a release of non-hazardous materials, said person shall notify the Planning Director and the South Dakota Department of Environment and Natural Resources no later than the next business day.  Verbal notice, in person or by phone, shall be confirmed by written notice, addressed and mailed to the Pennington County Planning Department (130 Kansas City St., Suite 200, Rapid City, SD, 57701), and postmarked within three (3) business days of the verbal notice. 

If the discharge of prohibited materials emanates from a commercial or industrial establishment, the owner or operator of such establishment shall also retain an on-site written record of the discharge and the actions taken to prevent its recurrence.  Such records shall be retained for at least seven (7) years.