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General Minimal Discharge Permit Rationale <br />Permit No. COG-600800 <br />Page S <br />III. COVERAGE UNDER THIS PERMIT <br />E. (core.) <br />In addition to the routine discharge monitoring report (DMRJ, a report will be required if <br />multiple discharges are going to occur, as with mobile washing facilities. The written report <br />must be sent to the Division duailing the following information for each discharge: Date of <br />the dischargc, Duration, Total Volume, and Flow Rate of the discharge, Location of the <br />discharge, and Best Management Practices used during the discharge. A form for this report <br />(hlukiple Discharge Report Form) is available from the Division. This complutd and signed <br />form must be submitted with the quarterly DMR. <br />F. Non-residential facilities discharging groundwater with pollutants fromfoundation, basemem, <br />or underground structure dewntering. <br />This application of the general permit is designed to cover discharges of groundwater from <br />short or long term dewatering of basements, foundations, and similar structures. The intent <br />of the Division is to provide coverage for industrial or commercial entities or municipality <br />owned structures (underpasses, etc.), requiring long term dewatering and has pollutanu <br />which are amenable to control through low level treamum technologies or Best Management <br />Practices (BMP's). This permit is not intended to address residemial structures with sump <br />pumps. <br />G. Facilities discharging non-contact cooling or heating water. <br />Non-comact cooling or hearing water is water that is kept separate from the liquids or sotids <br />that it is cooling or heating, (in the case of a hot spring being diverted jot use in heating <br />floors or pools mainly in the commercial setting). <br />In the case of cooling water, the temperature of the water after use is of concern because, <br />heat is transferred to the water and this excess heat may be durimental to the receiving <br />stream. Excess heat may cause algal blooms, reduce the azygen carrying capability of the <br />stream, and be physically injurious to aquatic organisms. In the cast of heating water from <br />hot springs, the water rs usually cooler after use and when discharged back into the same <br />area it flawed into before diversion should not pose a problem See V.B.3. <br />