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T FAMILY — MANAGEMENT AND SUPPORT <br /> Outdoor Storage of Raw Materials <br /> Environmental Concerns <br /> Discharge of the following materials into the storm <br /> water drainage system or watercourse: <br /> • Asphaltic material • Sand <br /> • Deicing agents • Vehicle fluids <br /> • Fuel <br /> DEFINITION AND Maintenance facilities store a variety of raw materials that may adversely <br /> PURPOSE impact water quality if they come in contact with surface waters. <br /> APPROPRIATE These procedures are applicable to all maintenance facilities that store raw <br /> APPLICATION material such as asphalt, sand, soils, treated wood posts and mulch <br /> outdoors, and are intended to reduce the potential for discharges of <br /> potential pollutants to storm water drainage system or watercourses. <br /> OPERATIONAL • Inspect storage areas regularly. Use the Daily/Weekly/Monthly <br /> PROCEDURES inspection form. <br /> • Protect storm drain inlets and watercourses from potential spills of raw <br /> materials. <br /> • Maintain spill cleanup materials and tools. Cleanup spills immediately, <br /> if itis safe to do so, and dispose of any generated waste properly. <br /> • Keep surfaces swept clean where material is blown or washed from the <br /> storage area, keeping materials covered and keeping storage containers <br /> in good condition. <br /> • Store materials away from storm water drainage systems or <br /> watercourses. <br /> • Where feasible, cover the storage area with a canopy or roof that is <br /> designed to direct the runoff away from the storage area, or cover (tarp) <br /> dry materials to prevent water intrusion during the winter season. <br /> • During -rain events, stockpiles of cold-mix asphalt shall be covered. <br /> Other stockpiles shall be covered or protected with soil stabilization <br /> measures or a perimeter sediment barrier. Contact the District <br /> Maintenance Storm Water Coordinator if problems arise. <br /> Caltrans Storm Water Quality Handbook B-85 <br /> Maintenance Staff Guide <br /> May 2003 <br />