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? p MCA <br />LAFARGE <br />AGGREGATES ?? <br />& CONCRETE "Comm <br />March 25, 2010 ./ MAY `i 9 2010 <br />Colorado DRMS DK*An 61 ???ciarna <br />Attn: Peter Hays A?ni? and Safeiy <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Chambers Pit, Permit No. M-1980-136 <br />Technical Revision (TR) 2009 <br />Dear Mr. Hays, <br />Lafarge West, Inc. (Lafargeieis requesting a Technical Revision (TR) to the existing permit for the <br />Chambers Pit (M-1980-136) which is located in Eagle County, Colorado. At this time, we are requesting <br />two (2) revisions: <br />1. Phase 1: Permission to further mine out AREAS B and D to a grade that meets or is <br />immediately above the existing floodplain limitation. Areas B and D have been previously been <br />mined. The additional, mined material from these areas will be processed onsite and will utilize <br />existing facilities for processing, storage of product, and disposal of fines. A map demonstrating <br />the existing pit is attached; <br />2. Phase 2: Permission to begin mining AREA F, upon completion of "Phase 1". Area F falls within <br />our existing permit boundary that encompasses approximately 149 acres, more or less. Area F is <br />approximately 17 acres in size, and is directly contiguous to our current mining operations. Area <br />F replaces mining activities within the permit boundary. The mined material from this area will <br />be processed onsite and will utilize existing facilities for processing, storage of product, and <br />disposal of fines. A map demonstrating mining activities is attached. <br />Further excavation of the materials within our existing mining operations will not result in additional <br />truck traffic, permitted production rates, etc., as it is a replacement for the other mined out areas within <br />the permitted boundary. Pursuant to M-1980-136, the entirety of the 149 acres was originally classified <br />as, "affected lands"; Area F is within the original 149 +/- acres. I have attached the original (112) permit <br />form that identifies the 149 +/- acres as affected, for your convenience. Please also recalculate the <br />reclamation bond to include Area F. <br />If you require any additional information, or you have further questions, please do not hesitate <br />to contact me at (303)-657-4336 or via email at sean.frisch@lafarge-na.com <br />Sincerely; <br />Sean Frisch <br />Land Manager, Lafarge West, Inc. <br />CC: KIDS, Inc. <br />1\ <br />Western U.S. Region 10170 Church Ranch Way, Ste. 200, Westminster, CO 80021 <br />Fax 303-657-4495 Web: www.lafrgenorthamerica.com