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k' ■ KLEINFELDER One of the eight confirmation soil samples was also analyzed for the following: ' • Polychlorinated Biphenyls (PCBs)by EPA Method SW8082 The following is a tabular summary of concentration ranges of detected analytes for the confirmation samples submitted for analyses for Area SE-B ' Table 5.1.2a Confirmation Sampling Results ' Small Excavation B ' TPH-D (mg/kg) TPH-O (mg/kg) PCBs * (µg/kg) Confirmation 1.6 to 170 46 to 2,100 34 (Discrete) *For Aroclor 1260. No other PCBs detected. 1 Three of six confirmation samples had detections of one or more of the analytes listed in Table ' 5.1.2a. The upper range of each of the analytes listed in each column above is from a single sidewall sample collected at a depth of about 2 feet. This sample was collected in an approximate 10-foot section of discolored sidewall soils located near the northwest portion of the ' excavation (Plate 2). A bottom sample (#19416) collected at a depth of about 6 feet had a concentrations of TPH-D and TPH-O of 6.5 and 46 mg/kg, respectively. The remainder of the confirmation samples were mostly non-detect for the requested analyses. ' 5.1.2.2 COMPOSITE STOCKPILE SAMPLING The two four-point composite soil samples collected from the excavated material from SE-B ' were analyzed for the following: • Total Extractable Petroleum Hydrocarbons as referenced to Diesel [TPH-D] and oil(TPH-O] ' by EPA Method SW8015B/DHS LUFT Manual. • Oil&Grease by Method SM 5520E • Volatile Organics by EPA Method SW8260B • Semi-Volatile Organics by EPA Method 8270C ' • LUFT 5 Metals [Cadmium (Cd), Chromium (Cr), Lead (Pb), Nickel (Ni) and Zinc (Zn)] by EPA Method 200.8 Total Purgeable Petroleum Hydrocarbons [TPH-P] by EPA Method 8015M ' Benzene,Toluene, Ethylbenzene,Xylenes [BTEX] by EPA Method 8020M 20-4341-11.E01/201IR959 Page 17 of 31 Copyright 2001,Kleinfelder,Inc. August 21,2001