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1 � • <br /> tf.\pmjaM\5137\rydentk.mp <br /> ' 2.0 PROCEDURES <br /> ' 2.1 Surface Soil Sampling <br /> Surface soil samples were collected by scraping the soil directly into 6-inch by 2-inch brass <br /> tubes. The tube ends were covered with teflon sheeting, capped and sealed with duct tape <br /> and labeled. The tubes were stored in an ice chest f& laboratory transport under chain of <br /> ' custody. <br /> 2.2 Soil Borings and Sampling <br /> ' The deeper soil borings were drilled with a SIMCO 2400-SK hollow-stem auger rig <br /> equipped with 5-inch outside diameter augers. Soil samples were collected by lowering <br /> ' an 18-inch split-spoon sampler lined with three 6-inch by 2-inch brass tubes into the augers <br /> at the end of drilling rods. The sampler was driven into the soil beneath the augers at <br /> ' the sampling depth. Upon retrieval, the ends of the lowermost tube in the sampler were <br /> covered with teflon sheeting, capped and sealed with duct tape, labeled, and stored on ice <br /> for laboratory transport under chain of custody. Soil from the other tubes was inspected <br /> for evidence of contamination and lithologically described by an ESE geologist. <br /> ' The shallower soil borings were excavated with a hand auger. Samples were collected by <br /> driving a steel sampler lined with a brass tube into the soil with a sliding hammer. The <br /> brass tube was sealed and labeled as described above. <br /> ' 2.3 Excavation Soil Sampling <br /> Samples from the excavation were collected from soil brought up in an excavator or <br /> backhoe bucket from a specified location. The samples were collected in brass tubes and <br /> handled as described above. <br /> 2.4 Analytical Methods <br /> All soil samples were analyzed by Curtis & Tompkins, Ltd. or Sequoia Analytical, both <br /> ' California certified laboratories. Analyses included: Total Petroleum Hydrocarbons as <br /> ' 2 <br />