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• Dispose of small amounts of excess dry concrete, grout, and mortar in the trash. • Set up and operate small mixers on tarps or heavy plastic drop cloths. • When cleaning up after driveway, or sidewalk construction, wash fines onto dirt areas, not down the driveway or into the street or storm drain. • Designate one completely contained area for auto parking, vehicle refueling, and routine equipment maintenance. The designated area should be well away from streams or storm drain inlets, and bermed if necessary. Make major repairs off site. • Clean up leaks, drips and other spills immediately so they do not contaminate soil or groundwater or leave residue on paved surfaces. Use dry cleanup methods whenever possible. If you must use water, use just enough to keep the dust down. Cover and maintain dumpsters. Check frequently for leaks. Place dumpsters under roofs or cover with tarps or plastic sheeting secured around the outside of the dumpster. A plastic liner is recommended to prevent leakage of liquids. Never clean out a dumpster by hosing it down on the construction site. • Make sure portable toilets are maintained in good working order by the leasing company and that wastes are disposed of properly. Check toilets frequently for leaks. • Practice source reduction. Minimize waste when you order materials. Order only the amount you need to finish the job. • Use recyclable materials whenever possible. Arrange for pick -up of recyclable materials such as concrete, asphalt, scrap metal, solvents, degreasers, cleared vegetation, paper, rock, and vehicle maintenance materials such as used oil, antifreeze, batteries, and tires. Materials and debris that cannot be recycled must be taken to an appropriate landfill or disposed of as hazardous waste. Never bury waste materials or leave them in the street or near a creek or streambed. Finding: The mitigation measure identified above is feasible and would reduce the potentially significant environmental impact described above to a less- than - significant level.