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J ~rnronmental Restoration bervices <br /> Sample containers were labeled with self-adhesive tags with the following information: <br /> Sampling location and number, Project name; Date and time. samples were collected; <br /> Treatment (preservatives, filtered, etc.); Name of sampler_ <br /> Subsequent to collection, the samples were immediately be stored on ice in an appropriate. <br /> ice chest. Samples wiere transferred under Chain-of-Custody procedures to Entech <br /> Analytical Labs of Sunnyvale. <br /> Sampling equipment was cleaned after its use at each sampling location. Cleaning <br /> procedures were accomplished as follows: <br /> Scrubed with a detergent-potable water solution using a hard bristle brush; Rinsed with <br /> potable water, Rinsed again with water; <br /> 2.2.2 Laboratory Analyses <br /> The following analyses were performed on soil samples obtained from the excavation <br /> sidewalls: <br /> TPH-diesel (EPA Method 8015M); STEX (EPA Method 8020) <br /> The analytical results of the soil samples are as follows: <br /> Results in Parts Per Million (PPM) <br /> Sample# TPH/d Benzene Toluene Ethl/Benzene Xylene <br /> SW1 NO NO NO NO NO <br /> SW2 200 `ND NO NO. ND <br /> SW3 180 NO ND ND NO <br /> SW4 NO ND NO NO ND <br /> Chain- f-Custody and laboratory results are contained in the appendix <br /> 2.2 Excavation Dewatering,and-Recharge Sampling- <br /> On December 14, 1995 approximately 90,000 gallons of groundwater was evacuated from <br /> the excavation into the sanitary sewer system under permit from the City of Stockton. <br />