2014-08-11_REVISION - M1978078 - Laserfiche WebLink

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EXHIBIT G STORMWATER MANAGEMENT PLAN LINCOLN COUNTY PICKENPAUGH PIT M-1978-078 As required by the State of Colorado Department of Public Health and Environment to reduce the chance of any possible pollutants reaching waters of the State of Colorado, let this serve as a Storm Water Management Plan (SWMP)that can be modified as needed should any of the Lincoln County mining practicesloperations change within streambeds of rivers and creeks within Lincoln County. Or should any open pit operation within the County be located or have the slope changed to allow Storm water to come in contact with any waterway that would drain into a State waterway. Lincoln County does not nor should need to store any materials on site.All equipment used in the removal of material from the site is trucked in, bulldozers and front end loaders are fully fueled and removed once the work is complete.All fueling or repairs take place on the haul road or loading area well away from the outer boundaries of the pit.All overburden or topsoil that needs to be stockpiled until reclamation are seeded or allowed to stabilize well away from the banks of the creek or streambed.Stockpiles are kept to a minimum and should rarely be left for long periods of time. Most sand and gravel pits within Lincoln County are located well away from any drainage areas that would allow water to enter Colorado Waters as defined,the storm water remains in the pit area until it perks into the soil. Streambed operations have all materials stockpiled well away from the banks and rarely remain for long time periods. The District Road Foreman for District 3 shall be responsible to assure that this plan is followed and that all Best Management Practices are implemented and up-dated as needed to insure that any storm water that may enter the streambed of Horse Creek has not been polluted by poor management practices. Semi-annual site inspections will take place to insure that the County's practices are performing as expected. BEST MANAGEMENT PRACTICES At no time will any mining activity take place when there is water in the pit area.All overburden and topsoil shall seeded to allow for Revegetation to take place in order to control storm water run-off or prevent polluted storm water from contacting the streambed.Any needed refueling shall take place away from the mining area on the haul road or the parking/loading area with special care taken to avoid any spills. Should a spill happen,the area would be cleaned by removing the soil or material to a depth of one(1)foot and twice the size of the spill area and removed from the site according to EPA regulations.Any spill that falls within the required reporting to Haz-Mat shall be reported in a timely manner and will also be reported to the Board of County.Commissioners.The cleanup requirements of a spill will also apply to any other fluids that may need to be added to the equipment or should any hoses break on the equipment.All repairs will take place in the loading area or on the haul road whenever possible.Any equipment left on site will be parked well away from the boundaries of the pit where drainage could enter Horse Creek.At no time shall fuel or other fluids used to service the equipment be stored on site but will be hauled in as needed. The following items will be utilized to minimize erosion in the area of the pit; earth berms,weed-free straw bales, straw logs and roughened pit slopes.The slopes will be roughened and left with ridges that run normal to the slope not parallel to the slope.The bottom of the pit area will be re-graded as needed to hold water in the pit area until it can percolate into the soil..The berm that was overtopped will be rebuilt to restore its functionality. STORMWATER DISCHARGE PERMIT IS CURRENT(COR34-1278)