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~~FARGE / <br />NORTH AMERICA <br />AGGREGATES, CONCRETE <br />& ASPHALT <br />March 31, 2006 <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />~6h G1O <br />RECEJ~ED <br />~~ ~'~12~ <br />" oiriaion of Minerah and Raoto~, <br />RE: Fountain Pit, Permit No. M-1981-307 <br />Request for Placement of Inert Fill in an Active Construction Materials Pit <br />To Whom it May Concern: ~ <br />Lafarge is requesting permission from the Division of Minerals and Geology to allow the importation and <br />placement of inert fill into our Fountain Pit located southwest of Fountain, Colorado. In support of this, <br />Lafazge is pleased to provide the following information concerning Rule 3.1.5(9) on the importation and <br />placement of backfill. <br />a) The attached map details the location of the proposed fill. The fill will be incorporated into <br />reclaimed slopes and silt ponds and covered with native material or topsoil. <br />b) The attached affidavit certifies that the material meets the definition of "clean and inert" fill. <br />Based on this affidavit, Lafarge believes that the groundwater will not be impacted by the <br />placement of this material. <br />c) It is anticipated that the material will start to be incorporated into the reclamation process in <br />2006 and will continue each yeaz over the life of the mine. <br />d) The placement of the inert fill will not alter the planned reclamation of the Fountain Pit. Since <br />it will be placed within the slopes and silt pond azeas and covered by native material, no changes <br />aze anticipated to the post-mining use. <br />e) Since the material to be placed is overburden, topsoil, milled asphalt rubble and clean concrete <br />rubble, the particle sizes will be sufficiently small as to not result in large or unstable voids. The <br />material will "mimic" the placement of the natural gravels and overburden and therefore not pose <br />any stability risk. <br />Should you have any questions, please do not hesitate to contact me at 303-657-4466. <br />Sincerely, <br />~~~ ~~~n, /7L.~~ <br />Tamra Stevens, ASP <br />Resource Management Coordinator <br />Attachments: Map detailing fill location <br />Affidavit on Fill Material <br />