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u <br /> rW <br /> INTERNATIONAL TECHNOLOGY CORPORATION <br /> Y <br /> EXECUTIVE SUMMARY <br /> IT Corporation was retained by BP Oil Company in Oecember 1991 to conduct quarterly <br /> sampling of the existing monitoring wells on their site located at 1403 Country Club Boulevard <br /> In Stockton, California. The wells were sampled In order to detect whether there had been a <br /> lateral dissemination of petroleum contaminants, encountered upon removal of seven <br /> underground storage tanks from the site. <br /> T^ Groundwater samples were collected on December 9. 1991, from three of the six,:.tW 5, <br /> MW-6 and MW-7}onsite monitoring wells. Upon analysis, the samples from wells MW-5 and <br /> MW-6 revealed no detectable levels o;petroleum hydrocarba.-w. The sampla collected from <br /> well MW-7 revealed low levels of petroleum components only. <br /> The remaining monitoring wells, MW-1, MW-3 and MW-4, have not contained water since <br /> February 1991;therefore, no quarterly samples have been collected from these wells. IT V <br /> recommends utilizing these wells for pressure monitoring and as vapor collection points during <br /> an upcoming soil vapor extraction (SVE)pilot test. Following completion of the SVE test,the <br /> utirdy of these wells as part of a soil vapor collection system will be examined. If the wells are <br /> riot essential to the system, they will be abandoned as per San Joaquin County requirements. <br /> t• <br /> .. MZ101-02-9VUSTM58NER <br /> a . <br />