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J <br /> KEI-P91-0202 .P3 <br /> . October 15 , 1991 <br /> Page 4 <br /> a clean Teflon bailer. The samples will be decanted into <br /> clean VOA vials, which will be sealed with Teflon-lined screw <br /> caps, and stored in a cooler (on crushed ice) until delivery <br /> to the state certified hazardous waste testing laboratory. <br /> Wells will be checked for free product and sheen (using an <br /> interface probe and/or paste tape) prior to development and <br /> sampling. <br /> Properly executed Chain of Custody documentation will accom- <br /> pany all samples. <br /> 10. Laboratory Analyses: <br /> Water and selected soil samples will be analyzed by Sequoia <br /> Analytical Laboratory in either Concord or Redwood City, <br /> California, both state certified laboratories, for TPH as <br /> gasoline using EPA method 5030 in conjunction with modified <br /> 8015, and BTX&E using EPA method 8020, as recommended by the <br /> RWQCB, and as specified in the Tri-Regional Guidelines. In <br /> addition, soil samples collected from exploratory borings EBI <br /> and EB2 will be analyzed for TPH as diesel using EPA method <br /> 3550 in conjunction with modified 8015, TOG using Standard <br /> Method 5520E&F, and for chlorinated solvents using EPA method <br /> 8010. <br /> Analytical results will be presented in tabular form, showing <br /> sample depths, results and detection limits. <br /> The analytical results will be used to delineate the vertical <br /> and lateral extent of the contaminants in soil and ground <br /> water. <br /> 11. Hydrology_: <br /> Ground water flow direction will be determined from the survey <br /> data and water table depths from both the new and existing <br /> wells. <br /> 12. Conclusions: <br /> Conclusions and results of Phase II will be described in a <br /> technical report. <br /> The technical report will be submitted to the San Joaquin <br /> County Public Health Services, and to the RWQCB, Central <br /> • Valley Region. <br />