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J • III IIIIIIIIIIIII III •/ STATE ~ COLORADO DIVISION OF MINERALS AND GEOLOGY ~~ Department of NaWral Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 D l v 15 l O N O r Phone: (303) 86G-3567 MINERAL S FA%:(303)832-8106 & G E O L O G Y {~~ ~1~ /_ /~ ®EIV V ~~ 01-1•I~.J I_ RECLAMATION June 1, 1999 MINING•SAFETY PUBLIC FILE COPY Mr. Ed Settle nn~~ ~9 9 ~ Bill Owens Grand Junction Pipe and Supply ~ ~ FILE: ~vl ~ l c°~er°°r P. D. BOX 1849 c C r /! / ~ SITE S Greg E. Walther Grand Junction, CO 81502 .. n G v I Executive Director Michael B. LOng Drvrsian Director RE: Soaring Eagle Gravel Pit, File No. M-99-025, Third Adequacy Review Dear Mr. Settle: The Division has reviewed your responses to the preliminary and secondary adequacy review letters regarding the Soaring Eagle Gravel Pit application. Listed below are the remaining issues that were not adequately addressed. Please respond to these remaining issues as soon as possible. Your responses must be received by the decision due date set for June 3, 1999. Failure to submit your adequate responses, or submit a written request for extension of the decision due date, by June 3, 1999, may result in denial of this application. REMAINING ADEQUACY ISSUES 1. The Division has not yet received your response to the CDQW letter dated April 12, 1999. Please indicate how the CDOW concerns will be addressed. The Division is in agreement with the recommendations proposed by CDQW and highly recommend that they be incorporated into the mining and reclamation plan. 2. Due to the amount and type of overburden to be used for backfill, prior to topsoil replacement, the Division accepts the commitment to replace a minimum of 6 to 8 inches of topsoil. However, any non-mined areas that require revegetation must be ripped to a two foot depth prior to topsoil replacement and revegetation. 3. Due to the high groundwater level and highly permeable gravel deposit at this site, any spill containment structure will be required to be lined with an impermeable material. Also the spill containment structure will need to be sized to contain the contents of the largest container stored within it. Please submit appropriate designs for the proposed spill containment structure, and indicate where it will be located. 4. A commitment to conduct weed control is not a weed control plan. Please consult your local weed control agent, and submit an adequate weed control plan, approved by that agent. See the enclosed weed policy adopted by the Mined Land Reclamation Board on July 29, 1998. 5. Please include the permanent structures on the reclamation plan map, including the shed and corral and any proposed fencing. 6. The Division agrees to accept GJP's commitment that the inlet and outlet structures will be designed, by a certified professional engineer, to safely pass the 100 year flood event. However, as-built designs, verifying the construction of these structures, will be required.