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<br />GEOCHRON LABORATORIES adivision of <br />KRUEGER ENTERPRISES, INC. <br />717 CONCORD AVENUE • CAMBRIDGE, MASSACHUSETTS 02136 • U S A <br />TELEPHONE. (617)676-3691 TELEFAX. (617)661-0148 <br />RADIOCAR80N AGE DETERMINATION <br />REPORT OF ANALYTICAL WORK <br />Our Sample No. GX-22908 <br />Your Reference: letter of 02/23/97 <br />Submitted by: htr. :Celly Payne <br />Mayo ~ Associates <br />710 East 100 North <br />Lindon, Utah 84042 <br />Date Received: <br />Date Reported: <br />02/26/97 <br />03/14/97 <br />Sample Name: 1 SEHG E1 XC3 1/24/97 (sample label) <br />groundwater precipitate <br />• AGE = Greater than 42,380 C-14 years BP (C-13 corrected). <br />Less than 0.78 ~ of the modern (1950) C-14 activity. <br />Description: Sample of groundwater precipitate. <br />Pretreatment: The barium salt precipitate was rapidly vacuum filtered <br />and immediately hydrolyzed, under vacuum to recover <br />carbon dioxide from the barium carbonates for the <br />analysis. C-13 analysis was made on a small portion <br />o£ the same evolved gas. <br />Comment: <br />. b13Caoe = - 2.7 ~ <br />Notes: This date is based upon the Libby half life (5570 years) for "C. The error stated is *1o as judged <br />by the analytical data alone. Our modern standard is 95% of the activity of N.B.S. Oxalic Acid. <br />The age is referenced to the year A.D. 1950. <br />