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~G11I~7_~~l/e7L71I4 /nc.. <br />environmental & engirr~aring <br />September 8, 2004 <br />Thomas A. Schreiner <br />Division of Minerals and Geology <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />Re: Response to Adequacy Review - Bonser Pit, M-2000-156 TR-1 <br />T f '1,Q-! <br />Dear Mr. Schreiner, y~ ~ , <br />The responses to your Adequacy concerns are as follows; <br />• rrdustry <br />a) an itemized cost for complete liner keyway construction for each phase; <br />Phase I excavation of a Oft X Oft keyway trench @$1.00 per linear ft X 4060 linear ft is <br />$4060.00 <br />hale II excavation of a Oft X Oft keyway trench @$1.00 per linear ft X 4550 linear ft is <br />$4550.00 <br />b) an itemized cost be phase for backfilling 275 linear ft of 0.5/1 pit slopes to a 3:1 <br />configuration with 10,000 cubic yards of overburden; <br />Phase I backfill 10,000 cubic yards from an average distance of 300 ft to grade 3:1 <br />slopes @$1.25 per cubic yard is $12,500.00 <br />Phase II backfill 10,000 cubic yards from an average distance of 300 ft to grade 3:1 <br />slopes @$1.25 percubic yard is $12,500.00 <br />c) please describe the secondary containment measures that will be employed for <br />containment of asphalt, diesel fuel or other petroleum products; <br />Diesel fuel above ground storage tanks will lie erected above asphalt pads with a curb <br />(typical roadway curb) surrounding the footprint of the tank. Pads will be constructed <br />under liquid asphalt tanks to include surrounding earthen berms measuring 1ft high and 2 <br />ft wide. Other small volumes of petroleum products will be stored in metal sheds <br />designed for petroleum product storage. Additionally, the operator will abide by the <br />Divisions spill containment stipulation. <br />Sincerely, <br />"' ` ~ <br />Peter Wayland <br />RECEIVEi~ <br />SEP 0 9 2004 <br />Division of Minerals and Geology <br />CansuRFng Servfcr~ tor: <br />• Transportation <br />• Land D¢vebpmeiY <br />• YINrg <br />Class; l~evirio„ <br />1D395 Colfax Ave.. Suite 35D. Lakewood. CD BD215 <br />ph 303-436-D951 fax 3D3-436-0953 <br />