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26 September 1997 AGE-NC Project No 97-0330 Page 3 of 7 Figure 2 33 SOIL SAMPLE COLLECTION Discrete soil samples were collected from soil boring P-4 at 5-foot intervals, beginning at a depth of 15 feet bsg, utilizing a California split-spoon sampler and brass sleeves Soil samples were not collected from P-3, which was advanced to sample ground water near boring P-2 The sampler was driven by dropping a 140-pound weight from a height of 30 inches The number of blows required to advance each 6-inch length of the sampler (blow counts) was recorded on boring logs by an AGE staff geologist (Appendix A) Upon sample retrieval, the middle brass sleeve was removed from the sampler Both ends of the sleeve were covered with Teflon sheets, capped and sealed with tape Each sample was labeled with ' the following boring location, depth, time, date, and sampler's initials The samples were placed in a chilled container and transported under chain-of-custody to McCampbell Analytical Incorporated (MAI), a California state-certified laboratory Selected soil samples were analyzed for total petroleum hydrocarbons quantified as diesel (TPH-d), volatile aromatics (BTE&X) and poly-nuclear aromatics (PNAs) in accordance with EPA Methods 8015M, 8020 and 8270 respectively 34 GROUND WATER SAMPLE COLLECTION Grab ground water samples were collected from soil borings P-3 and P-4 utilizing a hydro-punch technology A hydro-punch water assembly was advanced to a depth dust above the water table utilizing hollow steel rods, and driven past the lead auger bit into undisturbed materials approximately 5 feet below the water table The hollow steel rods were then retracted upward approximately five- feet, thereby exposing a stainless steel screen to the ground water A bailer with new nylon rope was manually inserted through the hollow steel rods and into the exposed screen and a grab water sample ' collected Sufficient sample was collected from each soil boring to fill three 40-m1 EPA-approved VOA vials containing 0 5 m1 18% hydrochloric acid as a preservative and a one-liter amber bottle Ground water sample containers were labeled with the well designation, date, time, and samplers initials Following collection and labeling of each grab ground water sample, the sample was immediately ' placed in a chilled container Each sample was logged on a chain-of-custody form and transported to MAI for analysis of TPH-d, BTE&X and PNAs in accordance with EPA Methods 5030/8015, 602 and 8270 respectively 4dvanced GeoEnvironmental,Inc I