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<br />Prepared by: Bolton & Menk, Inc. MCM 6: MUNICIPAL OPERATIONS BEST MANAGEMENT PRACTICES <br />Orono SWPPP ǀ 0C1.126140 Page 1 <br />V. MCM 6: MUNICIPAL OPERATIONS BEST MANAGEMENT PRACTICES <br /> Party responsible for Municipal Operations Best Management Practices implementation: <br />Public Works Superintendent <br /> Waste Management, Storage, and Disposal <br />Improper storage and handling of waste materials can allow several pollutants including oils <br />and greases, toxic and chemical compounds (including nutrients), bacteria, metals, and other <br />wastes to enter waterways through stormwater run-off and non-stormwater discharges. <br />Proper handling, along with recycling and waste reduction will reduce the potential for <br />polluting waterways, groundwater, and recharge points. <br />1. Ensure that all waste areas and dumpsters are covered and are not leaking. <br />2. Place waste receptacles indoors or under a roof overhang whenever possible. <br />3. Keep all container lids always closed unless adding or removing material. <br />4. Liquid wastes should be kept out of the dumpster and the lid kept closed to keep storm <br />water out. <br />5. Waste oil, antifreeze, spent solvents, and other liquids from vehicle maintenance <br />activities should be recycled. <br />6. Spent batteries should be disposed of as hazardous waste or returned for reclamation <br />and reuse. <br />7. Arrange for waste to be picked up regularly and disposed of at approved disposal <br />facilities. If the amount of generated waste exceeds the capacity of waste containers, <br />obtain more containers, or increase frequency of pickups. <br />8. Do not wash out waste containers or dumpsters outdoors. Return dumpsters to the <br />owners for cleaning at the owner’s facility. If municipally owned containers must be <br />washed, do so at a sink or floor drain so that wastewater goes to the sanitary sewer. <br />9. Only wash concrete mixing and pouring equipment in designated concrete washout <br />areas at each job site. Never wash into a storm drain inlet. <br /> Management of Stockpiles <br />Stockpile Management procedures and practices are designed to reduce or eliminate air and <br />stormwater pollution from stockpiles of soil, paving materials such as portland cement <br />concrete rubble, reclaimed asphalt pavement (RAP), hot mixed-cold laid bituminous mixes, <br />limestone rock asphalt, pre-coated aggregates, and various patching mixes. Protection of <br />stockpiles is a year-round requirement. To properly manage stockpiles: <br />1. Locates stockpiles away from concentrated flows of stormwater, drainage courses, and <br />inlets. <br />2. Protects all stockpiles from stormwater run-on using temporary perimeter sediment <br />barriers such as berms, dikes, fiber rolls, silt fences, sandbag, gravel bags, or straw bale <br />barriers. <br />3. Manages stockpiles of contaminated soil as follows: <br />4. Cover stockpiles with plastic sheeting or tarps. <br />5. Install berms around stockpiles to prevent runoff from leaving the area.