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April 26, 2000 Ireirracon 301 N.Howes•P.O.Box 503 Fort Collins,Colorado 80521-0503 Connell Resources, Inc. (970)484-0359 Fax:(970)484-0454 4305 East Harmony Road Fort Collins, Colorado 80525 Attn: Mr. William Welch Re: Proposed Timnath - Connell Pit �'`�'� Q GA r Weekly Groundwater Monitoring Terra con Project No. 20985110 Dear Mr. Welch, On April 7, April 8, and October 4, 1999, Terracon installed nine piezometer wells for the above referenced project. Terracon monitored groundwater levels on a weekly basis through July 9, and then on a semi-monthly basis through October for Monitoring Well Nos. 1 through 5. After Monitoring Well Nos. 6 through 9 were installed in October of 1999, Terracon has been monitoring the wells on a semi- monthly basis. The following table shows the depth of where groundwater was measured from the ground surface elevations for Monitoring Well Nos. 1 through 9, starting on October 12, 1999. Monitoring pepth.oft3roundwaterE3elow.GroundlSurface{f) ©ate 1 2 3 4 5 6 7 8 9 .< October 12, 1999 3.6 5.2 5.1 4.6 3.6 5.0 4.3 2.3 4.9 October 26, 1999 3.6 5.3 5.1 4.7 3.6 5.3 4.2 2.6 5.2 November 17, 1999 3.4 5.7 5.3 5.1 3.8 5.3 4.8 3.0 5.5 November 29, 1999 3.4 5.6 5.4 5.1 3.7 5.5 4.8 2.8 5.6 December 14, 1999 3.5 5.5 5.3 5.2 3.5 5.4 4.6 2.5 5.4 January 4, 2000 3.3 5.1 - 4.8 3.3 4.8 4.6 2.8 4.3 January 25, 2000 2.6 5.5 5.5 5.2 2.3 February 16, 2000 3.0 4.8 5.5 5.2 2.3 4.8 5.0 2.8 4.8 February 29, 2000 2.8 5.4 5.7 5.0 1.7 4.5 4.6 2.5 5.3 March 14, 2000 3.1 5.3 5.8 5.3 2.0 4.7 4.8 2.8 5.5 March 27, 2000 3.3 5.7 5.8 5.5 2.0 4.7 5.3 2.8 4.7 April 11, 2000 3.3 1 5.8 1 5.9 1 5.0 2.2 1 4.6 1 5.0 1 3.0 5.7 April 26, 2000 3.5 5.2 5.8 1 5.0 2.8 1 4.9 5.1 2.8 4.8 �1'' P Arizona ■ Arkansas ■ Colorado ■ Georgia ■ Idaho ■ Illinois ■ Iowa ■ Kansas ■ Kentucky ■ Minnesota ■ Missouri Montana 3 ..r� Nebraska ■ Nevada ■ New Mexico ■ Oldahorna ■Tennessee ■Texas ■ Utah ■Wisconsin ■Wyoming Quality Engineering Since 1965 APR 2 7 2000