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a <br />715 HORIZON DRIVE <br />SUITE 340 <br />GRAND JUNCTION, CO 81506 <br />USA <br />VOICE 970.242.4220 <br />W W W AGAPRO.COM <br />September 8, 2006 <br />Mr. Ed Cooley <br />Solvay Chemicals, Inc. <br />2717 County Road 215 <br />Parachute, CO 81635 <br />~AGAPITOASSOCIATES, INC. <br />CONSULTING ENGINEERS <br />AEG " ZOr~ <br />RE: Well 20-12 TDR Cable Readings~eptember 7, 2006 <br />Dear Mr. Cooley: <br />CHICAGO OFFICE <br />630.792.1520 <br />GOLDEN OFFICE <br />303.273.1511 <br />254-35 <br />Attached is a summary of the data obtained on September 7, 2006, from We1120-12 TDR <br />installation. Utilizing a CSI TDR 100, readings were obtained from Well 20-12's'/s-inch TDR <br />cable. A propagation velocity (vP) of 0.87 was utilized and 2,048 data points were collected from <br />the cable length. A waveform average of 4 was used to eliminate background noise. <br />The readings obtained to date show no ground movement. Also on the attached figure <br />are some ofthe previous readings obtained from We1120-12. <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 />I~l-~ <br />Albert Adu-Acheampong <br />Project Engineer <br />AAA/smvf <br />Attachment (1): Figure 1 <br />GEOENGINEERING • MINING ENGINEERING • CIVIL ENGINEERING <br />