Laserfiche WebLink
Portland Plant Holcim(US)Inc. Phone 719 784 6325 ' <br /> ti 3500 Highway 120 Fax 719 784 3470 <br /> ' Florence,CO 81226 www.holcim.com/us <br /> tHolJuly 7, 2010 , <br /> Mr. Berhan Keffelew , <br /> Colorado Department of Natural Resources <br /> Division of Reclamation, Mining and Safety <br /> 1313 Sherman Street, Room 215 , <br /> Denver, CO 80203 <br /> Re: Proposed Groundwater Monitoring Plan, DRMS Permit M-1977-344 , <br /> Dear Mr. Keffelew, , <br /> The purpose of this groundwater monitoring plan (GMP) is to fulfill the requirements of <br /> Technical Revision#6(TR-06)to the Division of Mining, Reclamation and Safety Permit M- , <br /> 1977-344. This permit is for the Holcim (US) Portland Plant quarry located adjacent to the <br /> cement plant in Florence, Colorado. The quarry is located on the north side of the Arkansas <br /> River. Groundwater in the area flows in a generally southerly direction toward the river. ' <br /> Holcim proposes annual sampling of the following monitoring wells: <br /> • MW-12 - Background well located in the north end of the quarry. <br /> • MW-7- Compliance well located in the southwest area of the quarry (approximately' <br /> mile inside the quarry main entrance). <br /> • MW-13 - Compliance well located in the southeast area of the quarry, approximately 100 <br /> feet north west of the intersection of State Highway 120 and Bear Creek (approximately <br /> % mile east of the main quarry entrance). <br /> In addition, Holcim will continue monitoring water level in wells P-2, P-3, MW-9, and MW-11. ' <br /> Holcim proposes monitoring for the following parameters: <br /> • Total Dissolved Solids (TDS) ' <br /> • Sulfate (SO4) <br /> • Potassium(K) <br /> • Sodium (Na) ' <br /> • Iron (Fe) <br /> • Manganese (Mn) <br /> In addition, the following field parameters will be recorded. ' <br /> • pH <br /> • specific conductance <br /> • temperature ' <br />