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2-4 analysis The six-inch long sample tubes were used m accordance with California sampling standards for volatile organic compounds (VOCs) analyses Sample tubes containing soil samples selected for analyses had zero headspace at each end Teflon' sheets were placed over each end and the tubes were capped and submitted to the laboratory for testing In gen- eral, the second six-inch long brass tube from the advancing end of the spht-barrel sampler was selected for analysis Drilling cuttings from each of the bonngs was containerized in 55-gallon drums, labeled, and staged on site for appropriate disposal Soil borings were filled using a cement/bentomte grout mix A tremie pipe was used to place the grout m bonngs that contained an appreci- able amount of water in the boring. San Joaquin County Department of Health representa- tives oversaw and approved the grout mix and placement 2 3 SOIL SAMPLING A total of 28 soul samples were collected at selected depths from borings for laboratory analyses m accordance with the Work Plan Sample depths and analytical requirements were determined based on the potential site-related constituents identified during the Phase I ESA Table 1 summarizes each of the soil samples that were collected for laboratory analyses and the analytical parameters for which they were tested. In addition to the 28 soil samples, one replicate sample was prepared for analysis All analytical samples were analyzed by Pace, Inc of Novato, California, winch is a Cahforma State-certified laboratory Appendix C contains the laboratory reports for the analyses of soil samples Analytical methods for the parameters are also summarized in Table 1 Method detection limits (MDLs) vaned based on the concentration level of constituents in the samples MDLs ' for each individual sample and parameter are presented m the laboratory reports in Appendix C During the uutial Phase H Investigation, each sample collected for laboratory analysis was placed in a uniquely labeled, laboratory-prepared glass sample container Each sample con- tainer was labeled so that the following information was provided 29023 I ' "REALISTIC SOLUTIONS FOR HAZARDOUS WASTE PROBLEMS