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~. - <br />715 HORIZON DRIVE <br />SUITE 340 <br />GRgND .IUNOTIGN, CO 81506 <br />USA <br />VOICE 970.242.4220 <br />W W W.gGAPITO.00M <br />September 29, 2005 <br />Mr. Ed Cooley <br />Solvay Chemicals, Inc. <br />2717 County Road 215 <br />Parachute, CO 81635 <br />AGAPITO ASSOCIATES, INC. <br />CONSULTING ENGINEERS <br />GMICgGO OFFICE <br />630.792.1 520 <br />1 ~ . ~i ~' <br />~C~ ~ - <br />'I <br />~- -- <br />RE: Well 20-12 TDR Cable Readings-September 28, 2005 <br />Dear Mr. Cooley: <br />254-35 <br />Attached is a summary of the data obtained on September 28> 2005, from Well 20-12 <br />TDR installation. Utilizing a CS[ TDR 100, readings were obtained from Well 20-12's'/~-inch <br />TDR cable. A propagation velocity (vp) of 0.87 was utilized and 2,048 data points were <br />collected from the cable length. A waveform average of 4 was used to eliminate background <br />noise. <br />The readings obtained to date show no ground movement. Also on the attached figure <br />are previous readings obtained from Well 20-12. <br />Thank you for the opportunity to work with you on this project. Please call me if you <br />have any questions, comments, or concerns. <br />Yours sincerely, <br />' ''- t . <br />I ~ <br />Albert Adu-Acheampong <br />Engineer <br />AAA/smb <br />Attachment(1): Figure 1 <br />GOLDEN OFFICE <br />303.273.1 51 1 <br />G EOENGIN EERING ' MINING ENGINEERING CIVIL ENGINEERING <br />