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4 Mf5-C- 5 <br />RECEIVED <br />SEP 17 2009, <br />s[)ivisian of fleclamation, <br />Mining and afety <br />Grand Junction Concrete Pipe Company <br />AN EQUAL OPPORTUNITY EMPLOYER <br />2311 River Road • P.O. Box 1849 • Grand Junction, Colorado 81502 • 970/245-9301 • FAX 970/243-6703 <br />August 28, 2009 <br />Division of Reclamation, Mining and Safety <br />Att: Travis Marshall <br />101 S. 3`d Street, Suite 301 <br />CO 81501 <br />F-C?D <br />AUG 3 12009 <br />GRAND JUNCTION FIELD OFFICE <br />DIVISION OF <br />Grand Junction, RECLAMATION MINING SAFETY <br />RE: Gunnison River Gravel Pits. File No. M-2009-048, Adequacy Review V <br />Dear Mr. Marshall: <br />The following response addresses the issues raised in your Adequacy Review dated <br />August 19, 2009. <br />1. EXHIBIT C- Pre-mining and Mine Plan Map <br />• Enclosed are revised Exhibit C maps with requested changes. <br />2. EXHIBIT D-Mining Plan <br />• A dozer will be used to remove the topsoil by pushing it into a windrow. It then <br />will be picked up and stockpiled using loaders and trucks. Topsoil and <br />overburden stockpiles will be stabilized by compaction using wheel loaders. <br />• A maximum of two pits will be in operation at any given time with a combined <br />maximum disturbance of 12 acres. <br />• Ground water will be pumped directly to the River in a pipe. The area to be f <br />mined is trenched, and the water is pumped from the trench to the River. The <br />pipe will be placed on top the ground. <br />3. EXHIBIT E-Reclamation Plan <br />• When the first area of a pit is mined, the overburden is stockpiled. After mining <br />has been completed in an area of approximately one half acre, the overburden <br />from the next are to be mined is placed in the previously mined area to flatten <br />slopes or backfill the area. Stockpiled overburden is placed in a previously mined <br />area where and when it is needed. Overburden will be compacted using haul tucks <br />and loaders.