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Pollutants of concern include toxic hydrocarbons, hazardous wastes, toxic organics, suspended <br /> solids, heavy metals, pH, oils, and greases. <br /> Pollutant Control Approach: Educate employees about the need to control site activities. Control <br /> leaks, spills, and loose material. Utilize good housekeeping practices. Regularly clean up debris that <br /> can contaminate stormwater. Protect the drainage system from dirty runoff and loose particles. <br /> Applicable Operational BMPs: <br /> . Identify, remove, and properly dispose of hazardous substances from the building before <br /> beginning repairing or remodeling activities that could expose them to stormwater. Such sub- <br /> stances could include PCBs, asbestos, lead paint, mercury switches, and electronic waste. <br /> . Educate employees about the need to control site activities to prevent stormwater pollution, <br /> and also train them in spill cleanup procedures. <br /> . At all times, have available at the work site spill cleanup materials appropriate to the chemicals <br /> used on site. <br /> . Clean up the work site at the end of each work day. Put away materials(such as solvents) <br /> indoors or cover and secure them, so that unauthorized personnal will not have access to <br /> them. <br /> . Sweep the area daily to collect loose litter, paint chips, grit, and dirt. <br /> . Do not dump any substance on pavement, on the ground, in the storm drain, or toward the <br /> storm drain, regardless of its content, unless it is clean water only. <br /> . Place a drop cloth,where space and access permits, before beginning wood treating activ- <br /> ities. Use drip pans in areas where drips are likely to occur if the area cannot be protected with <br /> a drop cloth. <br /> . Use ground or drop cloths underneath scraping and sandblasting work. Use ground cloths, <br /> buckets, or tubs anywhere that work materials are laid down. <br /> . Clean paint brushes and other tools covered with water-based paints in sinks connected to <br /> sanitary sewers or in portable containers that can subsequently be dumped into a sanitary <br /> sewer drain. <br /> . Clean brushes and tools covered with non-water-based finishes or other materials in a man- <br /> ner that enables collection of used solvents for recycling or proper disposal. Do not discharge <br /> non-water-based finishes or paints or used solvents into the sanitary sewer, or any other <br /> drain. <br /> . Use storm drain covers, or similarly effective devices,to prevent dust, grit,washwater, or <br /> other pollutants from escaping the work area. Place the cover or containment device over the <br /> storm drain at the beginning of the work day. Collect and properly dispose of accumulated <br /> dirty runoff and solids before removing the cover or device at the end of each work day. <br /> . Refer to S431 BMPs for Washing and Steam Cleaning Vehicles/Equipment/Building Struc- <br /> tures for best management practices associated with power washing buildings. <br /> 2019 Stormwater Management Manual for Western Washington <br /> Volume IV-Chapter 7-Page 610 <br />