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`04 June 2015 • <br /> AGE Project No. 15-3444 <br /> Page 3 of 4 <br /> SOIL SAMPLING <br /> Soil samples will be collected from the soil borings at discreet five-foot intervals at five <br /> feet and ten feet bsg using a 1.45 inch Geoprobe soil sampling assembly loaded with a <br /> two-foot acetate liner. Upon sample retrieval, a selected portion of the liner will be cut <br /> and covered with Teflon sheets, capped and sealed with tape. <br /> Surface soil samples will be collected from approximately one foot bsg utilizing a soil <br /> sampling slide-hammer loaded with one 6-inch long steel sleeve. Upon sample retrieval, <br /> the steel sleeve will be covered with Teflon sheets, capped and sealed with tape <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 selected constituents listed above. Each sample will be <br /> labeled with boring designation, depth, time, date and sampler's initials. Soils <br /> encountered in the borings will be visually classified by AGE personnel in accordance <br /> with the Unified Soil Classification System (USCS). Additionally, soil samples will be <br /> field-screened for presence of volatile organic compounds using an organic vapor meter <br /> (OVM), equipped with photo-ionization detector (PID) pre-calibrated to isobutylene. <br /> GROUNDWATER SAMPLING <br /> Grab groundwater samples will be collected from each soil boring. For collection of grab <br /> groundwater samples, soil borings will be advanced to ten feet bsg or the top of the <br /> groundwater table as identified by collection of a saturated soil sample. Once <br /> groundwater has been encountered, a pre-cleaned, one-inch diameter 0.01-slotted <br /> temporary well screen will be installed in each boring. Each groundwater sample will be <br /> extracted by dedicated disposable polyethylene tubing inserted into the screen section. <br /> Samples will be analyzed for the constituents listed above and will be collected into <br /> laboratory-supplied, non-preserved 40-ml Volatile Organic Analysis (VOA) vials, 1-liter <br /> amber glass containers, and 1-liter plastic containers. <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 container will be labeled with sample designation, time, date and sampler's <br /> initials. <br /> EQUIPMENT DECONTAMINATION <br /> Prior to use, all non-disposable sampling tools used for sample collection will be <br /> thoroughly rinsed with clean water after being washed with a solution of Alconox. <br /> Advanced GeoEnvironmental,Inc. <br />