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acetate sample tubes installed inside the sample sleeve..After the rod assembly-was hydraulically <br /> Cextended to the target sample depth; the sample sleeve was retrieved to ground surface and the <br /> acetate sample tube containing soil from the appropriate sar ple interval was capped with Teflong- <br /> lined plastic end caps,labeled,placed in a Ziplock® bag,and stored in a chest cooled with crushed <br /> ice. <br /> Groundwater Sam lin <br /> Groundwater. samples were collected with the Geoprobe® sampler by hydraulically driving a <br /> temporary PVC well screen into the water bearing zone, and allowing the groundwater-to collect <br /> .in the bottom of the PVC pipe. Groundwater samples were collected using a disposable bailer,then <br /> transferred to containers preserved with HCL (for VOC analysis). Sample containers were then <br /> labeled, placed in a Ziplockt bag, and stored in a chest cooled with crushed ice. <br /> Groundwater was generally encountered around 14 feet below ground surface (bgs) during <br /> assessment activities. <br /> Boring,Completion <br /> C After soil andoundwater les had been collected; each borehole was tremmie-grouted with <br /> �' samples <br /> Portland Cement and the ground surface was repaired with concrete. A black dying agent was <br /> mixed with the surface concrete in an attempt to snatch the surrounding surface color. <br /> 3.2 LABORA'T'ORY ANALYSIS <br /> Ceres Associates, following chain of custody protocols, released soil and groundwater samples to <br /> Me Campbell Analytical of.Pacheco, California, a State of California-certified analytical <br /> laboratory, on January 6, 2004. <br /> Ceres Associates analyzed the soil samples collected from approximately five feet below ground <br /> surface(bgs). Soil samples were analyzed for volatile organic compounds (VOCs)using U.S.EPA <br /> method 8260b. The groundwater samples were analyzed for VOCs using U.S. EPA method 624. <br /> Laboratory Data Reports are included in the Appendix°of this document. <br /> RESULTS <br /> I <br /> Table 1 reports concentrations of target analytes above laboratory reporting limits.Concentrations <br /> of VOCs from soil samples collected from SB 1, SB2, and SB3,and groundwater samples collected <br /> fiom SBI and SB2 were not reported by the laboratory above method reporting limits (ND). PCE <br /> was reported in groundwater collected.from SB3 at a concentration of 0.72 ppb. The State of <br /> California maximum contaminant level (MCL) for PCE is 5.0 ppb. <br /> Ceres Associates $ Project CA 1156-2 <br /> I� Cathay Bank(Former Valley Cleaners,Tracy) January 12,2004 <br />