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r M~ CO(1NTY ENGINE~I~G 1000 S. 9TH STREET GRAND JUNCTION, CO 81501 244-1815 January 19, 1984 ~ . ~ . ~' ~• t Peter V. O'Connor Mined Land Reclamation Division Department of Natural Resources 423 Centennial Building 1313 Sherman Street Denver, Colorado 80203 Dear Mr. O'Connor: Jar1 2 ; 198! falliJED IA~JD ~ _r,~p,G1Ai10~J DI'JISi1PI Colo. C~pi. of Natural Resources In response to your letter of December 9, 1983, regarding the five permit applications, the following is presented in letter format. I.A.1. The signed pages are enclosed 6.1-3 The RoacJ Department used approximately seventy to ninety thousand cubic yards of gravel per year average. Depending ' on the extent and location of work and on budger considerations, a specific pit may be utilized for unplanned projects. However, based on a total reserve volume of approximately 802,000 cubic yards, it is predicted that all existing County Pits will be depleted in ten years. New pits or expansion of existing pits will have to be explored within about five years. .- It should be noted that the temporary cessation rules do not apply as there is continuing, albiet, low volume, usage at each site, the level depending on the maintenance workload. 4 Depth o1` mining will occur as stated in the following Table: Pit Depth of Future Mining Reference ' `, A.2 Road Pit 15 to 20 feet .~ ~ ~ existing pit floor Divide f;oad Pit 10 to 14 feet top of bank Lumsden Canyon ',: Pit 20 to 25 feet top of bank Two Roacl Pit No Additional Mining Wright Draw Pit 10 feet (see response 11.8.1) *Ref'erence, Exhibit C, Mining Plan Map f 5. -The access road.acreage has not been included in the permitted acreage. However, as shown by Exhibits c, the pits are all served by previously existing roads (not sole use of the pits) , except for the Divide Road Pit. The access Road acreage for the Divide Road Pit is estimated ° .~.~... at 1 .0 acre. ,. .