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August 2, 2000 irerracon <br /> 301 N.Howes•P.O.Box 503 <br /> Connell Resources, Inc. Fort Collins,Colorado 80521-0503 <br /> 84(970)484-0359 Fax:(970)4 -0454 <br /> 4305 East Harmony Road <br /> Fort Collins, Colorado 80525 <br /> 0 4m <br /> Attn. Mr. William Welch . PAhs- �A4.a5 <br /> Re: Proposed Timnath - Connell Pit 1;A) r Ra0x>5 <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 piezometer wells for the above <br /> referenced project as requested for purposes of monitoring the groundwater levels during the mining <br /> and extraction operations. Terracon has been requested to monitor the groundwater levels on a bi- <br /> monthly basis until further notice. The following table shows the depth of where groundwater was <br /> measured from the ground surface elevations for Monitoring Well Nos. 1 through 9 for the year 2000. <br /> Maniorin Depot of Qrou r Below Ground; urfce.(ff . <br /> 9 > <br /> January 4, 2000 3.3 5.1 - 4.8 3.3 4.8 4.6 2.8 4.3 <br /> January 25, 2000 2.6 5.5 5.5 5.2 2.3 <br /> February 16, 2000 3.0 4.8 5.5 5.2 2.3 4.8 5.0 2.8 4.8 <br /> February 29, 2000 2.8 5.4 5.7 5.0 1.7 4.5 4.6 2.5 5.3 <br /> March 14, 2000 3.1 5.3 5.8 5.3 2.0 4.7 4.8 2.8 5.5 <br /> March 27, 2000 3.3 5.7 5.8 5.5 2.0 4.7 5.3 2.8 4.7 <br /> April 11, 2000 3.3 5.8 5.9 5.0 2.2 4.6 5.0 3.0 5.7 <br /> April 26, 2000 3.5 5.2 5.8 5.0 2.8 4.9 5.1 2.8 4.8 <br /> May 9, 2000 3.1 4.8 4.1 1.5 5.8 7.5 3.3 3.0 4.3 <br /> May 24, 2000 5.0 4.5 8.5 6.5 `* 1.5 6.5 9.3 5.0 <br /> June 7, 2000 " 8.5 2.3 4.5 4.0 8.0 6.0 8.0 0.5 <br /> June 13, 2000 3.7 4.9 4.6 2.0 7.2 8.2 2.8 3.2 4.0 <br /> June 30, 2000 3.0 4.0 3.9 2.0 *` 8.7 3.2 3.1 4.5 <br /> August 2, 2000 2.6 2.8 3.9 2.1 1 7.4 1 6.3 2.4 2.6 3.6 <br /> The groundwater levels appear to be experiencing more fluctuation during the last month's monitoring <br /> episodes. It should be noted that mining operations along with dewatering efforts have taken place <br /> most recently which could be contributing to the fluctuating groundwater levels as observed in <br /> Piezometers 1 through 9. <br /> Arizona ■ Arkansas ■ Colorado ■ Georgia ■ Idaho ■ Illinois ■ Iowa ■ Kansas ■ Kentucky ■ Minnesota ■ Missouri ■ Montana <br /> Nebraska ■ Nevada ■ New Mexico ■ Oklahoma ■ Tennessee ■ Texas ■ Utah ■Wisconsin ■ Wyoming <br /> Quality Engineering Since 1965 <br />