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Mr Kenneth Earnest <br /> Ultramar Inc <br /> May 12, 1992 <br /> Page 2 <br /> sheets are presented in Enclosure B, and copies of the March 1992 ground water sample laboratory <br /> reports are presented in Enclosure C <br /> Analytical test results indicate that concentrations of TPH as gasoline increased in ground water <br /> samples collected from monitoring wells MW-20, MW-34, MW-35, and MW-36 since the previous <br /> sampling event in December 1991 Benzene was detected in samples collected from monitoring wells <br /> MW-24, MW-35, and MW-36 at concentrations of 8 0 parts per billion(ppb), 1.6 ppb, and 10 ppb, <br /> respectively <br /> The next quarterly ground water monitoring and sampling event at this site is scheduled for <br /> June 1992 It is suggested that copies of this report be forwarded to the following regulatory <br /> agencies <br /> Mr Harlan 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 ��RED GEG <br /> ��5 R BRp �O <br /> r <br /> James R Brownell No 5078 <br /> California Registered Geologist No 5078 2- <br /> (LRP 115 HMB) <br /> CAO- <br /> Enclosures/3 <br />