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10 September 2012 <br /> AGE Project No . 11 - 1847 <br /> Page 6 of 9 <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice <br /> and transported under chain-of-custody procedure to a CDPH-certified laboratory. <br /> Samples will be analyzed for the constituents listed in Section 2 . 3 . Each sample will be <br /> labeled with boring designation , depth , time , date and sampler's initials . Soils encountered <br /> in the borings will be visually classified by AGE personnel in accordance with the Unified <br /> Soil Classification System (USCS ). Additionally, soil samples will be field-screened for <br /> presence of volatile organic compounds using an organic vapor meter (OVM ), equipped <br /> with photo-ionization detector (PID) pre-calibrated to isobutylene . <br /> 3 . 1 . 2. Grab Groundwater Sampling <br /> For collection of grab groundwater samples, soil borings SB1 through SB7 will be <br /> advanced to the top of the groundwater table as identified by collection of a saturated soil <br /> sample . Once groundwater has been encountered , a Geoprobe (or simiilar) push-driven <br /> water sampling device will be advanced four feet into the water-bearing zone . Grab <br /> groundwater samples will be collected using a Geoprobe water sampling assembly fitted <br /> with a pre-cleaned , one-inch diameter 0 . 01 -slotted temporary well screen . Each <br /> groundwater sample will be extracted by dedicated disposable polyethylene tubing through <br /> the hollow center of the push rods into the screen section . Samples will be analyzed for the <br /> constituents listed in Section 2 .3 , and will be collected into laboratory-supplied , non- <br /> preserved 40-ml Volatile Organic Analysis (VOA) vials . <br /> ij <br /> Appropriately sealed and labeled samples will be placed in a chilled container under ice <br /> and transported under chain-of-custody procedure to a CDPH-certified laboratory. Each <br /> sample containerwill be labeled with sample designation , time , date and sampler's initials . <br /> 3 . 1 . 3 . Boring Abandonment <br /> All soil borings will be permanently sealed to prevent vertical migration of potential <br /> contaminants . Soil borings shall be abandoned by backfilling with cement grout from the <br /> total depth to surface grade . Borings advanced below the groundwater table will be <br /> abandoned with grout utilizing tremie procedures . The top three to six inches of the boring <br /> abandonments will be completed flush to surface grade with native soils or concrete . The <br /> SJCEHD will be notified for grout inspection at least 48 hours prior to conducting grouting <br /> procedures . <br /> I <br /> Advanced CcoEnvironmen[al, Inc. <br /> i <br /> 4 <br />