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the north end of tanks C and D. Two soil samples were collected from each borehole One <br /> sample was collected at the bottom of the tank. The other sample was collected <br /> approximately 2 to 3 feet below the bottom of the tank <br /> The vertical and inclined boreholes were drilled with a slid-mounted Mobile B-24 drill rig <br /> using hollow-stem augers Prior to commencing initial drilling operations and subsequent to <br /> drilling additional boreholes, the dnll rig, tools, hollow-stem augers and any other downhole <br /> tools or equipment were thoroughly steam cleaned to prevent borehole cross contamination <br /> Sod samples were collected using a thin-walled Shelby Tube fitted with an internal brass liner <br /> Soil samples were collected in advance of the auger drill bit at the head of the hollow-stem <br /># auger string When the desired depth was reached, the Shelby Tube was fitted with an <br /> 1 internal brass liner and attached to the end of a string of drill pipe The assembly was then <br /> lowered through the hollow-stern auger string The Shelby Tube was then pushed <br /> I� hydraulically in advance of the auger bit_ The Shelby Tube was advanced sufficiently so as to <br /> I completely fill the brass liner with sod and allow no headspace in the brass liner The Shelby <br /> Tube was then retrieved hydraulically Following retrieval, the sample-filled brass liner was <br /> removed from the Shelby Tube Both ends of the brass liner were covered with aluminum <br /> foil, securely capped with polyethylene end caps, the end caps taped with silver duct tape, <br /> labeled, and placed in an ice chest contairung ice and kept cold for transport to the analytical <br /> laboratory for chemical analyses <br /> Soil samples were analyzed for TPHD and BTX&E Table 2, beginning on page 10, presents <br /> a summary of the analytical results Appendix A contains the laboratory analyses data sheets. <br /> GASOLINE TANK EXCAVATION AND REMOVAL <br /> 'Following the removal of remaining product, the tank was purged of flammable vapors and <br /> removed from the site under hazardous waste manifest Soil samples were collected from <br /> beneath each end of the tank at the desired location and depth with a backhoe shovel. <br /> rlcah-W�2-4) Page 9 <br />