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1 . After obtaining the necessary permits from the San Joaquin <br /> County EHD, we will mobilize a properly licensed "push type" soil <br /> probe truck equipped with sufficient clean sections to complete <br /> each hole without decontaminating. Equipment to be designed to <br /> use a conventional California Modified split-spoon sampling <br /> device capable of holding 1 1/2" or 2" diameter metal sleeves <br /> 2 Soil samples will be taken at 5 ' intervals from 5 ' below <br /> grade to the capillary fringe, (estimated to be at about 25 ' <br /> bgl , ) as follows <br /> a) A clean sample chamber filled with new metal tubes will <br /> be driven to the desired depth by pushing or use of a drive <br /> hammer. <br /> b) After retrieving the core barrel , it will be placed on a <br /> clean surface & carefully opened by the geologist in charge One <br /> sample will be promptly sealed, labeled, and placed on ice for <br /> transport under chain of custody to a State Certified laboratory <br /> for analysis A portion of a second tube will be placed in a <br /> plastic bag, tightly sealed, labeled, and set aside for <br /> screening. Remaining core material will be described and <br /> recorded on a field log for later use . After 10-15 minutes, the <br /> probe of a field calibrated PID meter will be inserted into the <br /> plastic bag, and the readings recorded <br /> NOTE If a certified onsite mobile laboratory is used for <br /> analysis, the sealed metal sleeve will be transferred directly to <br /> the lab for analysis . A custody chain will be completed for this <br /> method. <br /> c) After decontaminating the core barrel & filling it with <br /> clean sleeves, the pipe will be advanced 5 ' and the procedure <br /> repeated <br /> 3 After taking a soil sample as close as possible to the <br /> capillary fringe, a hydropunch tool will be driven far enough <br /> into the water table to allow the collection of water samples A <br /> clean metal or plastic hollow bailer will be lowered into the <br /> tool & removed water will be placed in previously preserved <br /> VOA' s . Each VOA will be promptly sealed, making sure that there <br /> is no headspace The VOA' s will either be clearly labeled and <br /> preserved on ice pending transport to the laboratory, or taken <br /> directly to the onsite mobile lab for analysis Soil & water <br /> samples will be analysed for BTEX, TPH-G, & TRPH, using San <br /> Joaquin County & Tri-Regional detection limits <br /> 4 . After obtaining sufficient water for analysis, the drill <br /> assembly will be removed and thoroughly decontaminated prior to <br /> moving to the next location. The hole will be grouted with a <br /> I <br /> 5 <br />