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~LAFARG E <br />NORTH AMERICA <br />Construction Materials <br />of mining. The second is expressed by Division regulations requiring the operator to minimize <br />"disturbances to the prevailing hydrologic balance of the affected land and of the surrounding <br />azea and to the quality and quantity of water in surface and groundwater systems, both during and <br />after the mining operation and during reclamation." To determine whether either of these two <br />conditions has been violated requires a combined effort of qualitative and quantitative <br />approaches. <br />A Gravel Well Permit and Temporary Substitute Water Supply Plan (TSWSP) have been <br />submitted to the Colorado State Engineer at the Division of Water Resources for approval. <br />Groundwater will not be exposed prior to TSWSP approval. A seazch of SEO files and a field <br />inspection revealed 13 wells located within 600 feet of the property, only 4 with potential for <br />impact. <br />LAFARGE NORTH AMERICA INC. -Lafarge Construction Materials <br />10770 Church Ranch Way, Suite 200, Westminster Colorado 80221 <br />Telephone: (303) 657-4000 Facsimile: (303) 657-0037 <br />