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dre April 2013 <br />Project No. 1301-0621 ass•clates, Inc. <br />ENGINEERS, GEOLOGISTS & <br />EU ENVIRONMENTAL SCIENTISTS <br />underground piping. The soil samples will be collected using a hang auger and slide hammer <br />equipped with a stainless steel corer. <br />Soil samples will be collected in stainless steel sample sleeves, sealed with Teflon tape, <br />affixed with plastic end caps, labeled, then placed and preserved in a pre-chilled cooler. In <br />addition to soil samples collected for chemical analyses, soil from each sampled interval will be <br />retained for field screening and lithologic logging purposes. Field screening will be completed <br />using a hand-held photoionization detector (PID). Soil classification will be completed by a <br />Padre geologist in accordance with the Unified Soil Classification System (USCS). <br />The soil samples selected for chemical analyses will be immediately sealed with TeflonTm <br />film and capped to prevent the loss of any potential volatile organic compounds in the sample. <br />Following the sample preparation, each sample will be transferred and stored in an on-site <br />cooler packed with blue ice to maintain the sample temperature at approximately 4°C to a State- <br />certified analytical laboratory for chemical analyses. <br />Upon completion, each drill hole will be abandoned in accordance with SJCEHD permit <br />requirements. This will consist of introducing neat cement grout to a minimum depth of 3 feet <br />bgs, and then filling with drill cuttings to grade surface. The surface penetrations will be <br />patched with a cold asphalt patch to match the existing surface grade. <br />2.5 LABORATORY ANALYTICAL PROGRAM <br />All collected soil samples will be delivered by Padre under chain-of-custody procedures <br />to a State of California-certified laboratory for chemical analyses. The laboratory analytical <br />program includes analyses of 10 soil samples for the presence of the following constituents: <br />TPHd by U.S. EPA method 8015M; and <br />BTEX and MTBE by U.S. EPA method 8260B. <br />The soil samples will be submitted to the analytical laboratory for chemical analyses on <br />a requested 5-day turn-around-time (TAT). <br />3.0 REPORT PREPARATION <br />Following receipt and review of the analytical data, Padre will prepare a letter-report <br />documenting the subject soil assessment activities. The report will document the soil <br />assessment methodology; site conditions encountered; field procedures utilized; and will <br />summarize the analytical results. The report will also identify, to the fullest extent possible, the <br />approximate volume of impacted soil, if encountered. The report will contain all appropriate <br />figures, and tabular data, and contain our conclusions and recommendations, as appropriate. <br />The report will be signed and certified by a State of California-licensed Professional Geologist. <br />13.0621 _Kaiser Stockton_TWP-HSP <br />3