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Drill cuttings from the borings will be stored onsite in 55-gallon drums <br />until chemical analyses are conducted. Ultimate disposal of the cuttings, if <br />determined to be hazardous soil, will be the responsibility of SPPL. <br />A.1.2 Soil Sample Selection and Recommended Test Methods <br />Soil samples will be collected at 5-foot intervals to a depth of 30 feet. <br />Soil samples will be used for geologic control during drilling and monitoring <br />well installation. In a addition, those soil samples which are considered to <br />have come into contact with fuel product will be delivered to laboratories for <br />aromatic volatile organic analysis (EPA Method 8020) and organic lead <br />analysis. <br />A.1.3 Quality Control / Quality Assurance <br />As part of the quality control/quality assurance (QC/QA) protocol for the <br />laboratories, both "split" and "duplicate" soil samples for organic analysis <br />will be collected. Approximately 10 percent of the samples analyzed will be <br />"duplicates," consisting of the nearest soil sample to the one initially <br />selected for analysis. This "duplicate" will be sent to the contract <br />laboratory and will be given sample numbers similar to those collected <br />samples, except the sequence number will be unique. The identity of the QC/QA <br />samples will be recorded in the field note book, but will not be marked in any <br />way on the sample containers or chain-of-custody forms. <br />Samples that are "split" are sent to another contract laboratory, will be <br />labeled similar to the original, and sent under separate chain-of-custody. <br />Again, the "split" samples will consist of about 10 percent of the sample <br />population and will consist of a sample nearest the one initially selected for <br />analysis.