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d <br /> KEI-Pa8-0810.WP1 <br /> February 10, 1989 <br /> Page 4 <br /> S. Laboratory Analyses: <br /> Selected soil and all water samples will be analyzed by <br /> Sequoia Analytical, Redwood City, California, a state <br /> certified laboratory, for TPH as gasoline and diesel and <br /> BTX&E using EPA analytical methods recommended by the RWQCB, <br /> as specified in the Tri-Regional guidelines. <br /> Analytical results will be presented in tabular form, <br /> showing sample depths, results and detection limits. <br /> Analytical results will be used to delineate the vertical <br /> and lateral extent of the contaminants in soil and ground <br /> water. A cross sectional profile will be constructed as <br /> appropriate showing subsurface lithology to depth drilled <br /> and first water table depth. <br /> 9. Hydrology: <br /> _ Ground water flow direction will be determined from survey <br /> data and water table depths. The flow direction will be <br /> shown on the Site Plan. <br /> 10. Discussion and Recommendations: <br /> Results of Phase I will be described in a technical report. <br /> If levels of contaminants in the ground water are found to <br /> be near or below action levels, KEI will recommend a 12 <br /> month prigram of quarterly monitoring and sampling to <br /> document the levels. . <br /> If contaminant levels in the ground water are found to sig- <br /> nificantly exceed action levels, Phase II will be initiated. <br /> The technical report will be submitted to the San Joaquin <br /> Local Health District and to the RWQCB, Central Valley <br /> Region. <br /> PHASE II <br /> Phase II will discuss the alternatives for continuing the subsur- <br /> face investigation if Phase I :reveals contamination levels in the <br /> ground water significantly in excess of action levels. ' <br /> Phase II will include a proposal for additional monitoring wells <br /> to define a zero. line of ground water contamination. It will also <br /> propose a ground water monitoring and sampling program for the <br /> wells installed. during Phase I. <br />