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July 7, 2004 Irerracon <br /> 301 North Howes-P.O.Box 603 <br /> Jut '' ? U 4 Fort Collins,Colorado 80521 0503 <br /> (970)484-0359 Fax:(970)484-0454 <br /> Connell Resources, Inc. Jab 0�47�3a <br /> 4305 East Harmony Road <br /> Fort Collins, Colorado 8G525 <br /> Attn: Mr. William Welch <br /> Re: Proposed Timnath - Connell Pit <br /> Bi-Monthly Groundwater Monitoring Episodes <br /> Terracon Project No. 20985110 <br /> Dear Mr. Welch, <br /> On April 7, April 8, and October 4, 1999, Terracon installed nine piezometers for the above referenced project as <br /> requested for purposes of monitoring the groundwater levels during the mining and extraction operations. Terracon <br /> has been requested to monitor the groundwater levels on a bi-monthly basis until further notice. Piezometer Nos. 1 <br /> and 2 were damaged in the spring of 2001 and were reinstalled on January 25, 2002. The following table shows <br /> the depth of where groundwater was measured from the ground surface elevations for Piezometer Nos. 2 through <br /> 9, for the six most current monitoring episodes. Beginning on April 17, 2003, Piezometer No. 1 was measured from <br /> top of pipe due to grading operations that were performed in this area of the site. <br /> Depth of Groundwater Below Ground Surface (ft) <br /> Monitoring Dates <br /> 1 2 3 4 5 6 7 8 9 <br /> December 2, 2003 7.9 7.0 6.4 7.4 2.2 4.2 4.3 2.9 5.1 <br /> February 26, 2004 8.0 7.7 6.8 8.0 2.4 4.3 4.9 3.0 5.0 <br /> March 25, 2004 8.0 7.5 6.7 8.0 2.7 4.6 5.0 3.7 5.1 <br /> April 23, 2004 7.9 7.1 3.6 8.0 3.0 4.8 5.0 3.4 4.8 <br /> June 11, 2004 7.4 4.7 3.8 6.5 1.5 3.3 4.1 3.4 4.9 <br /> July 7, 2004 7.3 4.6 (1) 6.2 1.3 3.7 4.4 3.3 4.7 <br /> ( Piezometer No. 3 was buried during road construction operations when observed on July 7, 2004, therefore, no <br /> groundwater measurement was obtained. <br /> Terracon will continue to monitor the piezometers indefinitely until further notice as requested. If you have any <br /> questions or require further information, please feel free to contact us at your convenience. <br /> Sincerely, <br /> TERRACON <br /> David A. Richer, P.E. <br /> Geotechnical Engineer/Department Manager <br /> Copies to: Addressee (3) <br /> Tuttle-Applegate, Inc. (1): Mr. William Schenderlein <br /> Arizona■Arkansas■California■Colorado t Georgia\Idaho■Illinois■Iowa■Kansas■Kentucky■Minnesota■Missouri <br /> Montana■Nebraska■Nevada■New Mexico■North Carolina■Oklahoma■Tennessee■Texas■Utah■Wisconsin■Wyoming <br /> Consulting Engineers&Scientists Since 1965 <br /> www.terracon.com <br />