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D <br /> Chevron U.S.A. <br /> Page 24 <br /> 8.31990 Groundwater ChemicaE AnalySj <br /> The seven Dames& Moore-constructed monitoring wells, MW-2A, .MW-4A, W A, lV1W8, MW-9, <br /> MW-10, and MW-11, were each sampled and tested at three different tir,ne intervals. The <br /> seven new welis were sampled on April 11th and 12th, 1990 following the canstruction of the <br /> final set of wells,again on May 9, 1990,and on August 9, 1990. <br /> r Groundwater samples were submitted to GTEL, a Chevron USA specified, Stata-approved <br /> s laboratory, for chemical analyses. Each sample was analyzed to detect the presence and <br /> a-, <br /> concentration of volatile organic compounds (EPS,Method 624) and total petroleum <br /> hydrocarbons as gasoline(EPA Method 8015). The results of those analyses are summarized <br /> }F+ on Table VI-A. In addition,the April 11, 1990 sample from monitoring well MVV-9 was tested <br /> for cadmium, chromium, copper, lead2 and zinc. The results of those analyses are <br /> summarized in Table VI-A and Table VI-S. <br /> �.� <br /> f <br /> L.. <br />