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ATTACHMENT A <br /> PROTOCOL <br /> The subsurface investigation would be conducted Drilling <br /> using a truck-mounted drill rig equipped with 8-inch <br /> hollow-stem augers. The soils encountered in the <br /> borings would be logged using the Unified Soil <br /> Classification System (ASTM D-2487). Soil samples <br /> would be collected in 2.5-inch diameter brass liners <br /> using a Modified California drive sampler. The ends of <br /> the brass liners would be covered with aluminum foil <br /> and plastic end caps and securely taped. The samples <br /> then would be placed on ice for transportation to the <br /> state certified laboratory. <br /> Soil from each sampling interval would also be placed <br /> in a Ziplock plastic bag and, after several minutes, the <br /> head space within the bag would be monitored for <br /> volatile hydrocarbons using an organic vapor meter <br /> (ovM). These reading would be recorded on the <br /> boring logs. <br /> All sampling equipment would be thoroughly cleaned Sampling Equipment <br /> with an aqueous solution of tri-sodium phosphate and Decontamination <br /> distilled water or steam cleaned. The cleaning <br /> procedure would be repeated between each sampling <br /> location. <br />