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<br />GEOCHRON LABORATORIES adivision of <br />KRUEGER ENTERPRISES, INC. <br />711 CONCORD AVENUE • CAMBRIDGE, MASSACHUSETTS 02136 • U . S . A <br />TELEPHONE. 1617) 676-3691 TELEFA%~ (617) 661-0149 <br />RADIOCARBON AGE DETERMINATION <br />Our Sample No. GX-23335 <br />Your Reference: letter of 08/13/97 <br />Submitted by: Mr. Erik C. Petersen <br />Mayo ig Associates <br />710 East 100 North <br />Lindon, Utah 84042 <br />REPORT OF ANALYTICAL WORK <br />Date Received <br />Date Reported: <br />08/15/97 <br />08/25/97 <br />Sample Name: SOM-129-H <br />AGE = Greater than 36,360 C-14 years BP (C-13 corrected). <br />Less than 0.33 ~ of the modern (1950) C-14 activity. <br />Description: Sample of groundwater. <br />Pretreatment: The sample was rapidly transferred, by aspiration, to <br />an evacuated flask, and acidified to recover carbon <br />dioxide from the dissolved carbonates for the analysis. <br />C-13 analysis was made on a small portion of the same <br />evolved gas. <br />The sample was very small and analysis by accelerator <br />mass spectrometry (AMS) was required. <br />Comment: <br />------------------------------------------- <br />Notes: This date is based upon the Libby halt life (5570 years) for "C. The error stated is t 1a 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 />