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I <br /> --C7-�-- Geological Audit Services, Inc. <br /> 1803 W March Lane, Suite A•Stockton, CA 95207 • (209)956-0264 FAX(209) 956-0700 <br /> low <br /> 9 November 1992 <br />' (GeoAudit CV 42E1-1 . 8) <br />' Mr. Arthur Wyatt <br /> 6290 Chesapeake Circle <br /> Stockton, CA 95219 � ���� <br />' Subject: Preliminary Assessment of Soil Contamination E O <br /> Arco Mina. Mart <br /> 4511 Pacific Avenue NOV 2 4 1992 <br />' Stockton, CA 95207 <br /> ENVIRONMENTAL HEALTH <br /> PERMITISERVICES <br />' Dear Mr. Wyatt: <br /> In accordance with your request, Geological Audit Services, Inc. <br />' (GeoAudit) has performed the initial assessment of hydrocarbon <br /> contamination at the referenced site. GeoAudit supervised the <br /> drilling of four soil borings, and one of these was completed as a <br /> vapor extraction well. This work was performed on 19 and 20 October <br />' 1992 . The enclosed report describes the procedures used and <br /> presents the results of this investigation. <br /> Two additional copies of this report are enclosed. We recommend <br /> that you transmit one copy to Ms. Diane Hinson at San Joaquin <br /> County Public Health Services/Environmental Health Division, and <br />' one copy to Ms. Elizabeth Thayer at the Central Valley Regional <br /> Water Quality Control Board in Sacramento. <br /> Thank you for the opportunity to perform this investigation. If you <br />' have any questions regarding our conclusions, please call our <br /> office. <br /> Sincerely, <br /> GEOLOGICAL AUDIT SERVICES, INC. <br /> X g:je�� <br /> Victor B. Cherven, Ph. D. <br /> Project Geologist eoww 0 <br /> Registered Geologist #3475 _ Gi <br /> 4� �0. B. CH�G �� <br /> CJ <br /> enclosures <br />' too ?.475 <br /> t0F CAUI�d4��- <br /> tEnvironmental Services • Hydrogeology•Geotechnical Services <br />