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Non-Stormwater Discharges SC-10 <br />■ See SC44 Stormwater Drainage System Maintenance for additional information. <br />Illicit Connections <br />■ Locate discharges from the industrial storm drainage system to the municipal storm drain <br />system through review of "as -built' piping schematics. <br />■ Isolate problem areas and plug illicit discharge points. <br />■ Locate and evaluate all discharges to the industrial storm drain system. <br />Visual Inspection and Inventory <br />■ Inventory and inspect each discharge point during dry weather. <br />■ Keep in mind that drainage from a storm event can continue for a day or two following the <br />end of a storm and groundwater may infiltrate the underground stormwater collection <br />system. Also, non-stormwater discharges are often intermittent and may require periodic <br />inspections. <br />Review Infield Piping <br />■ A review of the "as -built' piping schematic is away to determine if there are any connections <br />to the stormwater collection system. <br />■ Inspect the path of floor drains in older buildings. <br />Smoke Testing <br />■ Smoke testing of wastewater and stormwater collection systems is used to detect <br />connections between the two systems. <br />■ During dry weather the stormwater collection system is filled with smoke and then traced to <br />sources. The appearance of smoke at the base of a toilet indicates that there may be a <br />connection between the sanitary and the stormwater system. <br />Dye Testing <br />■ A dye test can be performed by simply releasing a dye into either your sanitary or process <br />wastewater system and examining the discharge points from the stormwater collection <br />system for discoloration. <br />TVInspection of Drainage System <br />■ TV Cameras can be employed to visually identify illicit connections to the industrial storm <br />drainage system. <br />Illegal Dumping <br />■ Regularly inspect and clean up hot spots and other storm drainage areas where illegal <br />dumping and disposal occurs. <br />■ On paved surfaces, clean up spills with as little water as possible. Use a rag for small spills, a <br />damp mop for general cleanup, and absorbent material for larger spills. If the spilled <br />material is hazardous, then the used cleanup materials are also hazardous and must be sent <br />to a certified laundry (rags) or disposed of as hazardous waste. <br />January 2003 California Stormwater BMP Handbook 3 of 6 <br />Industrial and Commercial <br />www.cabmphandbooks.com <br />