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Monitoring Well Installation <br />Lafarge has installed a total of 14 monitoring wells in the area of the Greeley 35`h Avenue Mine. <br />Three of these wells are on the Lafarge Brown property, three are near the permitted mine, and <br />eight are on surrounding properties considered for future mine expansion. The monitoring wells <br />were installed outside the limits of contemplated mining, but within the proposed permit <br />boundary, so that groundwater levels can be monitored during and after mining. The monitoring <br />wells were constructed of 2-inch Schedule 40 PVC casing and screen extending to the bedrock. <br />Each of the monitoring wells was finished at the surface with a locking, above ground, steel <br />protective casing set in concrete. <br />The objectives of the well installation and monitoring program are to monitor current <br />groundwater conditions and to provide a basis for assessing potential effects to groundwater <br />levels during and after the proposed mining. Through the well monitoring program, pre-mining <br />groundwater elevations, flow patterns across the property, and seasonal fluctuations will be <br />documented. <br />Well Inventory <br />A well inventory for the site and adjacent areas was conducted to identify wells near the project. <br />The inventory consisted of a review of well records (Registered Wells) on file with the Colorado <br />Department of Natural Resources, Office of the State Engineer (SEO) as well as mailings and <br />meetings with nearby property owners. <br />The State records search indicated that there are fifteen permitted wells (excluding those in the <br />permitted mine) listed within 0.5 miles of the Lafarge Brown property (Figure 1). Fourteen of <br />these wells are on the opposite side of the Cache la Poudre River. <br />SEO requires a 600-foot well spacing agreement statement from the well owners who have wells <br />within 600 feet, at least six months prior to the commencement of mining of a relevant phase. <br />The well research indicated one permitted well within 600 feet of the proposed permit boundary. <br />This well, identified below, is within 600 feet from the closest proposed mine excavation and is <br />on the opposite side of the Cache la Poudre River. <br />Permit: 30523 <br />Owner: Gino Tori <br /> 4704 West O Street <br /> Greeley, CO 80631 <br />Use: Irrigation <br />Location: NE '/4 NE '/a Sec. 34,6N, 66W <br />Greeley 35" Avenue Mine (M-1977-036) <br />DRMS 112 Reclamation Permit Amendment Application <br />Groundwater Monitoring and Mitigation Plan <br />Page 2