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Building & Grounds Maintenance SC-41 <br />■ If you need to de -water an excavation site, you may need to filter the water before <br />discharging to a catch basin or off -site. If directed off -site, you should direct the water <br />through hay bales and filter fabric or use other sediment filters or traps. <br />■ Store toxic material under cover during precipitation events and when not in use. A cover <br />would include tarps or other temporary cover material. <br />Mowing, Trimming, and Planting <br />■ Dispose of leaves, sticks, or other collected vegetation as garbage, by composting or at a <br />permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage <br />systems. <br />■ Use mulch or other erosion control measures when soils are exposed. <br />■ Place temporarily stockpiled material away from watercourses and drain inlets, and berm or <br />cover stockpiles to prevent material releases to the storm drain system. <br />■ Consider an alternative approach when bailing out muddy water: do not put it in the storm <br />drain; pour over landscaped areas. <br />■ Use hand weeding where practical. <br />Fertilizer and Pesticide Management <br />■ Follow all federal, state, and local laws and regulations governing the use, storage, and <br />disposal of fertilizers and pesticides and training of applicators and pest control advisors. <br />■ Use less toxic pesticides that will do the job when applicable. Avoid use of copper -based <br />pesticides if possible. <br />■ Do not use pesticides if rain is expected. <br />■ Do not mix or prepare pesticides for application near storm drains. <br />■ Use the minimum amount needed for the job. <br />■ Calibrate fertilizer distributors to avoid excessive application. <br />■ Employ techniques to minimize off -target application (e.g., spray drift) of pesticides, <br />including consideration of alternative application techniques. <br />■ Apply pesticides only when wind speeds are low. <br />■ Fertilizers should be worked into the soil rather than dumped or broadcast onto the surface. <br />■ Irrigate slowly to prevent runoff and then only as much as is needed. <br />■ Clean pavement and sidewalk if fertilizer is spilled on these surfaces before applying <br />irrigation water. <br />■ Dispose of empty pesticide containers according to the instructions on the container label. <br />January 2003 California Stormwater BMP Handbook 3 of 5 <br />Industrial and Commercial <br />www.cabmphandbooks.com <br />