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NarMne <br /> On9inator. �1 'Wtials & Date <br /> x a I Env iroll inelItal Approved tV✓' <br /> JScience & We Is upon L <br /> - Engineering,.Inc <br /> « Al <br /> ° Z` <br /> C (.C" LB <br /> File (p,� ) File Number: <br /> Originator (pro 6-9_ _ L1 �f <br /> posafs to project PA _7 <br /> October 20, 1992 ``--- - _ <br /> Project No. 6-92-5400 <br /> APR 2 8 9990 dPU CATS <br /> Cecchini, Cecchini & Giovanni ENVIRONMENTAL. HEALTH <br /> c/o Mr. Ellis Cecchini PERMIT/SERVICES <br /> 1312 A Street <br /> Antioch, California 94509 <br /> SUBJECT: September 1992 (Quarterly Ground Nater Monitoring Report for well UST=1 <br /> at 3535 Cherokee Road, Stockton, California <br /> Dear Mr. Cecchini: <br /> Environmental Science & Engineering, Inc. (ESE) presents the following results of the <br /> September 1992 quarterly ground water monitoring activities at the former Delta 'Truck <br /> Sales, 3535 Cherokee load, Stockton, California (Figure 1 - Site Plan). Eased on <br /> a discussions involving the property estate, FSE initiated a quarterly monitoring program for <br /> well UST-1, located near the fuel islands, for four quarters (one year) in .august 1992. <br /> Results of ground water monitoring activities of well UST-1 performed by ESE in August <br /> and September 1992 are presented in this document. <br /> SITE BACKGROUND <br /> In 1990, FSE approximately defined the lateral and vertical extent of soil containing diesel <br /> fuel and gasoline from leaking underground tanks and product lines at the facility. ]Because <br /> hydrocarbons were noted deeper than 50 feet in soil, ground water monitoring well UST-1 <br /> was installed to a depth of 103 feet. Detectable concentrations of petroleum hydrocarbons <br /> were found in the water from this well. <br /> Three additional wells (SI-1, SI-2, and SI-3) are located on site approximately 600 feet from <br /> the fueling area in an estimated cross gradient position (Figure 1). Since ground water <br /> samples from these wells do not contain detectable concentrations of hydrocarbons, wells <br /> SI-1, SI-2, and SI-3 are considered to be outside of the ground water plume from the fueling <br /> island. Wells SI-1, SI-2, and SI-3 were not sampled as part of this ground water monitoring <br /> Program. <br /> 4Q90 Nelson Avenue Stute J Concord CA 94520 <br /> Phone(510)685 4053 Fsx(510)685 5323 <br />