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AGAPITO ASSOCIATES, LVC. <br />CONSULTING ENGINEERS <br />715 NORI20N DRIVE <br />SUITE 340 <br />GRAND JUNCTION, CO 31506 <br />usa <br />VOICE 970.242.4220 <br />W W W.AGAPITO.COM <br />June 8, 2005 <br />Mr. Ed Cooley <br />Solvay Chemicals, Inc. <br />2717 County Road 215 <br />Parachute, CO 81635 <br />RE: We1120-IZ TDR Cable Readings-June 7, 2005 <br />Dear Mr. Cooley: <br />254-35 <br />Attached is a summary of the data obtained on June 7: 2005, from Well 20-12 TDR <br />installation. Utilizing a CSI TDR 100, readings were obtained from Well 20-12's '/8-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 previous readings obtained from Weil ZO-L?. <br />Thank you for the opportunity to work with you on this project. Please call me if you <br />have any questions, cotnntents, or concerns. <br />Yours sincerely, <br /> <br />Albert Adu-Acheampong <br />Engineer <br />AAA/smb <br />Auachment(q: Figure I <br />CHICAGO OFFICE <br />630.792.1 520 <br />GOLDEN OFFICE <br />303.273.1511 <br />GEOENGINEERING • MINING ENGINEERING • CIVIL ENGINEERING <br />