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r� n <br /> Mr Kenneth Earnest <br /> Ultramar Inc <br /> July 27, 1992 <br /> Page 2 <br /> Analytical Results <br /> Ground water samples collected from monitoring wells MW-20, MW-34, MW-35, and MW-36 on <br /> June 18, 1992, were submitted to a Cali form a-certified laboratory for analysis of benzene, toluene, <br /> ethylbenzene, and xylenes(BTEX), and total petroleum hydrocarbons(TPH)as gasoline A summary <br /> of these analytical results, and the analytical results from previous sampling events performed since <br /> February 1991, are presented in Table 2 Copies of the field sampling information sheets are <br /> presented in Enclosure B, and copies of the March 1992 ground water sample laboratory reports are <br /> presented in Enclosure C <br /> Discussion <br /> Analytical test results indicate that benzene concentrations were below the limits of detection in each <br /> of the ground water samples collected Petroleum hydrocarbons were not detected in ground water <br /> samples collected from monitoring wells MW-35 and MW-36 <br /> The next quarterly ground water monitoring and sampling event at this site is scheduled for <br /> September 1992 It is suggested that copies of this report be forwarded to the following regulatory <br /> agencies <br /> iMr Harlin Knoll Mr James B Maughan <br /> Public Health Services California Regional Water Quality Control Board <br /> County of San Joaquin Central Valley Region <br /> 1601 East Hazelton Avenue 3443 Routier Road <br /> Stockton, California 95201 Sacramento, California 95827-3098 <br /> Sincerely, <br /> DELTA ENVIRONMENTAL CONSULTANTS, INC. <br /> Richard E Chandler <br /> Hydrogeologist <br /> � 4 <br /> aures R Brownell s ,l <br /> California Registered Geologist No 5078 140 6378 <br /> (LRP147 HMB) <br /> Enclosures/3 <br />