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April 14, 2009 <br />TM <br />APPI, <br />. • w/- <br />• TRE <br />9?1211_1 <br />I RECEIVED <br />APR 15 2009 <br />GRANO jUNG i iUN MLLU OFFICE <br />DIVISION OF <br />Mr. G. Russell Means RECLAMATION MINING & SAFETY <br />Environmental Protection Specialist f <br />Division of Reclamation, Mining and Safety <br />101 South 3rd Street, Suite 301 <br />Grand Junction, CO 81501 ? and via email to Russ.Means@state.co.us <br />RE: Nuvemco, LLC's Monogram Mine, File No. M-178-222UGC.11? RECEIVED <br />Response to Review of Storm Water Controls4Sy Allen Sorenson APR 2 1 2009 <br />Dear Mr. Means, <br />Diviaion of ReGL)mation, <br />Mir;mg and Safety <br />Nuvemco has received the list of items requiring revision to the Storm Water Controls for the above <br />referenced Monogram Mine. The requested design changes and certification by a Colorado licensed <br />professional will require additional time. Responses to Mr. Sorenson's review follows. <br />Nuvemco will defer the design and specifications for the containment of the runoff from the ore storage <br />area. Nuvemco recognizes that the design must be for the 100 year/24 hour plus the 10 year/24 hour <br />precipitation event. Nuvemco further acknowledges that this deferral will require a technical revision for <br />the design and specifications of the selected pre-fabricated containment vessel(s) and certifies that no ore <br />will be stored at that surface site until such technical revision is approved. <br />The detention pond is being redesigned to include rip rap specifications and soundness in addition to the <br />description of the fencing of the entire pond. We anticipate completion and certification of this design by <br />a Colorado professional engineer by the first of next week. <br />Nuvemco also acknowledges the final reclamation liability cost estimate and will also submit that bond <br />next week. <br />Again, we appreciate your assistance in processing Nuvemco's Monogram Mine conversion to a DMO on <br />their patented mining claims and the Monogram Mine.. <br />Sincerely, <br />O&G Environmental Consulting, LLC <br />C/ <br />E. Thomas Cavanaugh, PG, CPG <br />Operations Manager <br />Cc: Sue Carter, Nuvemco, LLC, 10771 3200 Road, Hotchkiss, CO 81419 <br />Jake Eisel, 125 Continental View Drive, Boulder, CO 90303-4514 <br />Paul Szilagyi, 650 Linden Avenue, Boulder, CO 80304 <br />---Keeping oil and gas projects flowing <br />11 Inverness Way South • Englewood, CO 80112 <br />tel 720-529-9777 • fax 720-529-9798 • www.ogenvironmental.com