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<br />Prepared by: Bolton & Menk, Inc. MCM 6: MUNICIPAL OPERATIONS BEST MANAGEMENT PRACTICES <br />Orono SWPPP ǀ 0C1.126140 Page 6 <br />e) Use mulch or other erosion control methods to prevent erosion of exposed soils <br />and flowerbeds. <br />f) Do not leave grass clippings or trimming residue on impervious areas. <br />g) Use mechanical methods for vegetation removal where possible. <br />h) Avoid loosening soil when removing weeds or vegetation. <br />i) Collect and dispose lawn trimmings, clippings, vegetation, etc. <br />j) Reduce or prevent exposed soil areas. <br />k) Only irrigate as much water as needed. Never water at rates that exceed the <br />infiltration rate of the soil. <br /> Road Maintenance (Appendix I) <br />Responsible Party: Streets and Stormwater Supervisor <br />Existing roads and bridges require periodic maintenance. These maintenance activities often <br />generate stormwater pollutants such as heavy metals, sediments, solvents, oils, and fuels. <br />1. General practices for road and bridge maintenance: <br />a) Always sweep or vacuum dry material wastes during saw cutting, road stripe <br />removal, or other activities that create dust/sediment. <br />b) Locate and block adjacent storm drain inlets during maintenance work such as <br />concrete curb and gutter work, resurfacing, paving, striping/marking, or saw <br />cutting. <br />c) Use drip pans for paving machines and other equipment that may leak fluids. <br />d) Do not apply road striping paint during windy, wet, or rainy conditions. <br />e) If wet saws must be used, place drip pans under or watertight barriers around <br />equipment when not in use. Turn of cooling water when saw is not in use. <br />f) Wash out mixers, delivery trucks, or other equipment in a designated concrete <br />washout area only. <br />g) Protect storm drains during maintenance. <br /> Right-of-Way Maintenance <br />Responsible Party: Streets and Stormwater Supervisor <br />1. Open and closed conveyance systems within City right-of-way will be maintained to <br />function as designed and in a manner that will allow them to convey stormwater <br />effectively. Periodic maintenance will include: <br />a) Mowing <br />b) Maintenance of vegetation <br />c) Removal of debris <br />d) Removal of excess sediment <br />e) Repair/stabilization of erosion <br />f) Removal of any obstruction that inhibits drainage <br /> Application of Herbicides, Pesticides and Fertilizers