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III IIIII(IIIIIIIIII <br />~EHN'Sf Don Kehn <br />.roarcotun: Construction fnc. <br />GENERAL CONTRACTORS <br />,on Pcwmq • Crushed Apgrgpates • Eaittvnovina • LutNnO • tlnderOround Utlllues • Rolamiikrg <br />January 24, 2002 <br />RECE! VEa <br />JAN 2 81002 <br />Division of 47iaerals and Geology <br />Division of Minerals and Geology <br />Attn. Erica S. Crosby <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denier, CO 80203 <br />RE: Timnath Pit, DMG tiM-1989-056 <br />Dear Ms. Cmsby: <br />We are in receipt of the DMG Inspection Report conducted by you on January l ti, 2002. <br />In reference to the issue of imported inert fill, to comply with Rule 3.1.5(9), we offer the <br />following. <br />Inert fill materia! will be utilized to backfiil the pit area No inert fill will be.-- = <br />utilized under future wettands. <br />Approximately 300,000 cy of inert material will be backfilled. <br />We certify al! backf~tl will be clean and inert as defined in Rule 1.1(20). <br />Some inert 611 has already ban placed; primarily excess dirt from local <br />construction projects. We anticipate such backfilling occurring for the life of the <br />pit. <br />It is necessary to utilize offsite inert fill to backfill the pit area in order to achieve <br />contours consistent with the reclamation plan. There is simply not enough oveo- <br />burden on site to backfill without importing inert fill, and we generate such <br />material fi~um local construction and site development contracts. <br />The inert fill will be placed in approximately two-foot lifts witb a crawler type <br />dozer. The majority of the 611 is dirt with broken concrete and rock making up <br />the balance. 'Ibis enables the concrete and rock to be surrounded with dirt, <br />minimizing settling due to voids. <br />6550 So. County Road 5 • Fort Collins, Colorado 80528 • Ptgne (970) 226-4111 • FAX (970) 226.4115 <br />1012 So. Greeley Hwy. • Cheyenne, Wyoming 82007 • Phone (307) 632-4000 • FAX (3071832-4016 <br />