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TETRA TECH ' RCCEIVE, <br /> Obje-,Jic- )l `�EP C; ?000 <br /> Division GT <br /> flit, l.0 ..... _. ..... <br /> September 4, 2009 <br /> 1' <br /> Mr. William Rodman <br /> 3613 West F Street <br /> Greeley, CO 80631 <br /> :i <br /> RE: Lafarge Permit M-1977-036 <br /> Dear Mr. Rodman: <br /> Lafarge is in receipt of your letter of August 16, 2009 objecting to the Brown property expansion of <br /> the 35th Avenue mine if mining requires the removal of groundwater. The purpose of this letter is to <br /> inform you of the area to be mined and mining methods to be used, as well as to address mitigation <br /> plans to be implemented by Lafarge to protect existing area wells. <br /> The expansion area is the Brown property located on the northwest side of the existing mine <br /> approximately one mile northwest of your property. Mining on the Brown property will include <br /> dewatering to allow for mining under dry conditions. Because of the distance, we do not anticipate <br /> that mining of the Brown expansion will impact wells on your property. <br /> Lafarge will have a groundwater monitoring and mitigation plan for the site that will be on file under <br /> the permit at the Colorado Division of Mining and Reclamation Safety. The purpose of the plan will <br /> be to monitor groundwater conditions in the area and to mitigate impacts to existing wells from the <br /> mining operations. This plan spells out temporary mitigation measures for impacts suspected to be <br /> due to Lafarge's operations, and long term measures for impacts determined to be by Lafarge's <br /> operations. A copy of the monitoring and mitigation plan is attached. n �t <br /> If you have any questions or comments, please do not hesitate to call. SCANNED <br /> Sincerely, <br /> TETRA TECH <br /> hLinden, R.G. <br /> Project Manager <br /> Attachment <br /> cc: Anne Best Johnson, Lafarge <br /> seared Ebert, Colorado Div. of Reclamation <br /> Julie Cozad, Tetra Tech <br /> Pam Hora,Tetra Tech <br /> 1900 S.Sunset Street,Suite I-F Longmont,CO 80501 <br /> Tel 303,772.5282 Fax 303.772.7039 www.tetratech.com <br /> PA23511\1 33-235 1 1-08005\Deliverables\DRMS\Objection letter\Rodman 090309.doc <br />