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D ENVEI WATEi <br />1600 West 12th Avenue • Denver, Colorado 80204-3412 <br />Phone 303-628-6000 • Fax No. 303-628-6199 • denverwater.org <br /> <br />September 21, 2009 / q <br />Sent Via Certified Mail: u / -J <br />Mr. Jared Ebert, Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: M-2004-078, Lupton Lakes Resource <br />Dear Mr. Ebert, <br />Please find enclosed documentation for a Technical Revision, TR-01, to the <br />aforementioned permit. The revision includes a phasing plan amendment to the Mining <br />Plan, Exhibit C. The following phases will be mined together in two methods, as <br />illustrated on the revised Exhibit C: Phases 4-8; Phases 9-12; Phases 13-16; and Phases <br />17-18. The first method will be recovering resource to approximately 15 feet or to a <br />depth to not expose ground water. The second method will remove all economically <br />recoverable materials, and dewatering will commence. This change allows us to <br />consolidate dewatering activities for a more efficient operation. Accordingly, Exhibit D, <br />item (d) shall be amended as follows: The maximum area to be mined at one time is <br />approximately 100 acres. <br />Additionally, a 2.98-acre portion of Phase 17, as described in the enclosed <br />Permanently Excluded Property Description, will be excluded from the mine permit <br />boundary. This portion is not owned by Denver Water. <br />Please find enclosed a check in the amount of $216.00 for application fees. <br />Sincerely, <br />rofeef ambei, Jr <br />Engin eerin <br />CONSERVE