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.~ <br />December 15, 1999 <br />Connell Resources, Inc. <br />4305 East Harmony Road <br />Fort Collins. Colorado 80525 <br />Attn: Mr. William Welch <br />Re: Proposed Timnath -Connell Pit <br />Weekly Groundwater Monitoring <br />Terracon Project No. 20985110 <br />Dear Mr. Welch, <br /> <br />ys~-~ 73 <br />1 ~~rracon <br />301 N NunaS • P.O Box 503 <br />Fan Colons. Cobrado 90121 0503 <br />(5%01 484 0359 Fax (9'01 X84 04 Sa <br />RECEIVED <br />flEC 1 61999 <br />On April 7, April 8, and October 4, 1999, Terracon installed nine piezometer wells at the above <br />referenced location (please refer to attached map for monitoring well locations). Terracon monitored <br />groundwater levels on a weekly basis through July 9, and then on asemi-monthly basis through <br />October for Monitoring Well Nos. 1 through 5. After Monitoring We11 Nos. 6 through 9 were installed In <br />October of 1999, Terracon has been monitoring the wells on asemi-monthly basis. The following table <br />shows the depth of where groundwater was measured from the ground surface elevations for <br />Monitoring Welt Nos. 1 through 9, starting on October 12, 1999. Terracon is also re-submitting the <br />Boring Logs for each of the monitoring wells installed with the corrected ground surface elevations. <br />Monitoring Depth of Groundwater Below Ground Surface (ft) <br />Date 1 '2 ~~3 4 ~ 5' ~•6 ~~7 8 ..~: 9<::..:. <br />October 12, 1999 3.60 5.20 5.10 4.60 3.60 5.00 4.30 2.30 4.90 <br />October 26, 1999 3.60 5.30 5.10 4.70 3.60 5.30 4.20 2 60 5.20 <br />November 17, 1999 3.40 5 70 5 30 5.10 3 80 5.30 4.80 3.00 5.50 <br />November 29, 1999 3.40 5 60 5.40 5.10 3 70 5.50 4.80 2.80 5 60 <br />December 14, 1999 3 5 5.5 5.3 5 2 3.5 5.4 4 6 2.5 5.4 <br />Terracon will continue to monitor the piezometers indefinitely until further notice as requested. If you <br />have any questions or require further information, please feel free to contact us at your convenience. <br />Sincerely, <br />TER4~ <br />vid A. Richer, P. <br />Geotechnical Engineer/Department Manager <br />Enclosures: Site Plan, and 9 Boring Logs <br />Copies to: Addressee (3) <br />Tuttle-Applegate, Inc. (1): Mr. David Jones <br />Anxona { Arkansas ~ Coloratlo ~ Georgia ~ Idaho ~ Illinois ~ Iowa ~ Kansas ~ Kentucky ~ Minnesota ~ Missouri ~ Montana <br />Nebraska ~ Nevada ~ New Mexico ~ Oklahoma ~ Tennessee ~ Texas ~ Utah ~ Wisconsin ~ Wyoming <br />Ouelily Engineering Since 1965 <br />