Laserfiche WebLink
STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866.3567 <br />FAX: (303) 832-8106 <br />February 24, 2009 <br />COLORADO <br />D I V I S ION OF <br />RECLAMATION <br />MINING <br />SAFETY <br />Bill Ritter, Jr. <br />Governor <br />Mr. Joel Bolduc <br /> <br />Holcim, (US) Inc <br />Hants D. Shemwn <br />Executive Director <br />3500 Highway 120 Ronald W. Cattany <br />Florence, CO 81226 Division Director <br />Natural Resource Trustee <br />Re: Proposed Groundwater Monitoring Plan, DRMS Permit # M-1977-344 Portland Cement Plant. <br />Dear Mr. Joel <br />To fulfill the requirements of Technical Revision # 6, for permit # M-1977-344, Portland Cement quarry and <br />plant, ground water monitoring plan, the Division sets the following monitoring and compliance wells. <br />The site is located in Fremont County, North side of the Arkansas River. Groundwater flows in the area in a <br />southerly direction towards the river. <br />Holcim will sample MW-7 WELL Compliance well, annually for the following parameters. <br />Total Dissolved Solids <br />Sulfate (SO4) <br />Potassium (K) <br />Sodium (Na) <br />Iron (Fe) <br />Manganese (Mn) <br />(TDS) 3,918 MG/L <br />2,080 MG/L <br />17 MG/L <br />226 MG/L <br />4.5 MG/L <br />0.88 MG/L <br />In addition Holcium will drill in April 2009, compliance well MW-13 near the entrance to the quarry and <br />will provide five quarters of data, so the Division will determine the appropriate parameters for the well. and <br />set compliance parameters. In addition to MW-7, Holcim will also monitor MW-12, as a background well <br />and provide the same parameters as MW-7 on an annual basis. When two consecutive parameters are <br />exceeded more than 10%, during the reporting year for compliance well MV-7, Holcim will increase the <br />frequency of monitoring to bi-yearly. If the upward trend continues, Holcim will submit an explanation and <br />provide a remedial plan. <br />If you have questions, please contact me at 302 866-3567 xt 8129. <br />_Sincerely, <br />erhan Keffelew <br />Office of Office of <br />Mined Land Reclamation Denver • Grand )unction • Durango Active and Inactive Mines