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0 0 <br /> 63.0 SAMPLING OBJECTIVES <br /> • To obtain representative samples for laboratory analysis for TPH-diesel, <br /> TPH-gasoline, aromatic hydrocarbons, and lead. <br /> • To obtain defensible data for the proper, legal disposal. <br /> 64.0 SAMPLING LOCATION AND FREQUENCY <br /> Soil samples will be collected from the UST excavation, pipe trenches, and <br /> contaminated soil stockpiles, as follows: <br /> • One sample in the middle and one at each end of the tank. Additional <br /> samples will be collected at the direction of the COR. <br /> • Soil samples along fuel lines, at an interval of one sample per 20 feet and at <br /> locations exhibiting evidence of contamination, at the direction of the COR. <br /> • One soil sample per 35 cubic yards from the stockpiles. <br /> Groundwater samples will be collected from the UST excavation as follows: <br /> • One sample if groundwater is encountered during the excavation. <br /> Table 1 summarizes the sampling location and frequency. <br /> TABLE B-1 SAMPLING LOCATION AND FREQUENCY <br /> Location Matrix Number of Samples to be Collected <br /> Primary <br /> QC QA <br /> Tank pit, middle Soil 1 1 <br /> Tank pit, end Soil 2 1 <br /> Pipe Trench Soil 1 per 20 ft, 5 (estimated) 1 <br /> Stockpiles Soil 1 per 35 cy, 3 (estimated) 1 <br /> Tank pit, middle Groundwater 1 1 <br /> All samples will be analyzed for parameters using EPA methods listed in Table B-2. <br /> B-2 <br />