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the tanks. The size of the berm will be large enough to hold 110% of the maximum <br />storage of all the tanks and small containers. The capacity of the bermed area will be <br />calculated as follows: <br />7500 gal. tack oil + 10000 gal. asphalt + 10000 gal. fuel + 250 gal. misc. lube.= <br />27750 gallons <br />Convert to cubic feet use 0.13368 to go from gallons to cubic feet. <br />27750 x 0.13368 = 3710 cf <br />3710cf x 1.10 = 4081 cf = 110% of contents of tanks <br />Therefore the bermed containment area has to be 3 feet deep x 34 feet wide x 40 feet long <br />@ minimum to ensure total containment the bermed area will be 3 feet deep x 40 feet <br />wide x 60 feet long. <br />3' x 40' x 60' = 7200 cf which will provide 176% capacity for possible spills. <br />The berm will be constructed by using available earth found on site and a plastic liner <br />particularly manufactured for this purpose placed over the soil to be protected. An <br />earthen berm constructed by compacting the sidewalk in 8" lifts and compacted to 96% <br />the berm will have side slopes of 1H:1 V and will be 3 feet wide across the top. The liner <br />will be carefully place to ensure that no punctures occur in the liner material. The liner <br />used will be an impermeable barrier designed to prevent leachate from leaking from any <br />spill. If a spill does happens the liner will stop the spilled material from penetrating the <br />soil below the liner. At the time a spill takes place all measures will be taken to soak up <br />the liquid. Then to remove the contaminated materials from the bermed area and transport <br />the mixture of sand and/or other absorbent materials to an approved disposal site. All <br />employees working around these materials will be toughly trained on how to respond to <br />any spills that may occur. <br />8.) The Mining Plan Map Exhibit "C" has been revised on March 23, 2004 to show the <br />topsoil stockpiles and earthen berm that will be placed and constructed to control storm <br />water and to keep storm water from running off site. These constructed features will also <br />control soil erosion by preventing any sediment from leaving the site. A storm water plan <br />will be developed and all of the outlets that are to be constructed will be designed to <br />reduce erosion using riprap, straw bales and silt fences. Drainage on the mine site will be <br />done by constructing drainage swales to direct flows to the designed outlets and prevent <br />the storm water from running off site and causing erosion. When a swale reaches an <br />outlet a sediment trap will keep the soil from leaving and only clear water will be <br />released to the historical drain ways. This practice will be done on all mining and batch <br />plant phases. <br />