HYDRO26197

• Permit No: C1980007
• IBM Index Class Name: Hydrology
• Doc Name: APPENDIX A ISOTOPE ANALYTICAL LABORATORY REPORTS
• Permit Index Doc Type: OTHER GROUND WATER
• Media Type: D
• Archive: No

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GEOCHRON LABORATORIES adiHSion of
KRUECER ENTERPRISES, INC.
711 CONCOFiO AVENUE • CAMBFIDGE. MASSACHUSETTS 02138 • U. S.A
TE IEPHONE: (617) 8763691 TELEFAx: [phone]
RADIOCARBON AGE DETERMINATION
Our Sample No. GX-23334
Your Reference: letter of 08/13/97
Submitted by: Mr. Erik C. Petersen
Mayo & Associates
710 East 100 North
Lindon, Utah 84042
Sample Name: SOM-23-H-4
REPORT OF ANALYTICAL WORK
Date Received: 0 8 / 15 / 97
Date Reported: 08/25/97
AGE . 15,580 +/- 810 C-14 years BP (C-13 corrected).
(14.38 +/- 1.45) ~ of the modern (1950) C-14 activity.
Description: Sample of groundwater.
Pretreatment: The sample was rapidly transferred, by aspiration, to
an evacuated flask, and acidified to recover carbon
dioxide from the dissolved carbonates for the analysis.
C-13 analysis was made on a small portion of the same
evolved gas.
The sample was very small and analysis by accelerator
mass spectrometry (AMS) was required.
Comment: Very small sample; approximately 0.6 grams carbon.
. bi3Ca0e = - 9 ' 3 ~
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Notes: This date is based upon the Libby half life (5570 years) for'"C. The error stated is tta as judged
by the analytical data alone. Our modern standard is 95% of the activity of N.B.S. Oxalic Acid.
The age is referenced to the year A.D. 1950.