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Dust from overburden drilling is controlled by a cyclone filter on the drill. <br />Dust from disturbed land is minimized two ways. Mined land is backfilled, <br />graded, topsoiled, and seeded as soon as practical to establish growth, which <br />minimizes wind and water erosion. Topsoil removal ahead of the mining is <br />kept at a minimum to decrease the disturbed surface area. <br />-0n site waste disposal practice. No domestic or industrial garbage is <br />disposed on site. Regular wood, paper, etc. garbage is hauled away by a <br />commercial garbage disposal company to the Montrose County Landfill. <br />Waste oil is stored on site until one 1,250 gallon tank is filled. The waste oil <br />is then tested for hazardous material (Spec Oil Analysis) and then sold to a <br />certified waste oil disposal company or burned in an approved waste oil <br />furnace located on site. <br />-Stockpiles of overburden and topsoil. All topsoil and overburden piles are <br />seeded to establish vegetation to prevent wind and water erosion. A berm is <br />constructed around the base of each pile to prevent sediment from flowing <br />away from the pile. The entire area is then protected by the large ditch and <br />sediment pond structures that encompass and protect the entire disturbed <br />land within the permit boundary. <br />-Dirt roads that do not drain into a sediment pond. These roads are graded <br />as needed and roadside ditches are maintained to control the surface water <br />runoff. <br />-Small disturbed areas that are not covered by sediment ponds. These areas <br />have been engineered to Colorado Department of Minerals and Geology <br />specifications so sediment runoff is minimized. All areas have been <br />surrounded by either dirt berms, silt fencing, straw bales or some <br />combination to contain all surface runoff and not allow sediment to enter <br />United States waterways. <br />C. Preventive Maintenance. All culverts and ditches will be routinely inspected and <br />maintained if necessary to insure they are free and operational. All berms around <br />topsoil piles will also be inspected to ensure they still meet their function. All <br />sediment ponds will be surveyed for sediment and water storage capacity at least <br />once a year so they can handle a 10yr-24hr precipitation event. If pond capacity <br />does not meet the original requirements that it was designed for, excess material <br />will be removed to provide the necessary capacity. The oil separator located at the <br />wash bay near the shop will be inspected quarterly and cleaned as needed to assure <br />proper function. Petroleum storage facilities will be inspected during every working <br />shift. Staff education and training on inspection of storm water, waste handling, <br />prevention maintenance and emergency action will be on going. <br />-5- <br />