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Field Analytical Measurements: All four samples from each of the 21 soil borings will be <br /> analyzed in the field using a field test kit. The field test kits will be used to analyze the <br /> samples for PNAs and petroleum hydrocarbons. A portable gas chromatograph (GC) will be <br /> used to better distinguish the PNAs from the petroleum hydrocarbons in the field, as a <br /> supplement to the field kits. The test kits are expected to have a detection limit of <br /> approximately 10 mg/kg for PNAs and 10 mg/kg for TPH. This field analytical measurement <br /> will be the primary methodology used to determine the concentration of PNAs and petroleum <br /> hydrocarbon in soil. <br /> Laboratory Analytical Measurements: Those samples with PNA or TPH detections in the <br /> field below 30 mg/kg or parts per million (ppm) will be "sent for laboratory analysis. <br /> Approximately one quarter of the samples with field test kit results of greater than 30 ppm <br /> TPH or PNAs will be sent to the laboratory for analysis for the purpose,of confirming the <br /> field kit results. <br /> Samples sent to the laboratory will be analyzed for PNAs, TPH-diesel, and TPH- <br /> gasolineBTEX. A subset of the samples sent to the laboratory will be analyzed for additional <br /> parameters. A sample of the tar in source area#3 and the oily residue in source area #2 will <br /> be analyzed for physical and chemical properties as outlined in Section 4.0. <br /> Field and laboratory analytical procedures to be used during the soil investigation activities <br /> are described in Section 4. <br /> SF010030B82.DOC 2-4 <br />