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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report October 8, 1996 <br /> Date Received September 25, 1996 <br /> Project 23-482276-B00 <br /> ' QUALITY ASSURANCE RESULTS <br /> FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM <br /> HYDROCARBONS AS DIESEL BY GC/FID (MODIFIED 8015) <br /> Laboratory Code 73016 (Duplicate) <br /> Relative <br /> Reporting Sample Duplicate Percent Acceptance <br /> Analyte Units Result Result Difference Criteria <br /> Diesel Extended µg/g (ppm) X50 X50 nm 0-20 <br /> Laboratory Code 73016 (Matrix Spike) <br /> Relative <br /> Reporting Spike Sample % Recovery % Recovery Acceptance Percent <br />' <br /> Analyte Units Level Result MS MSD Criteria Difference <br /> Diesel Extended µg/g (ppm) 500 X50 83 78 65-132 6 -' <br /> Laboratory Cade Spike Blank <br /> Relative <br /> Reporting Spike % Recovery % Recovery Acceptance Percent <br /> Anal to Units Level MS MSD Criteria Difference <br /> Diesel Extended n/g (ppm) 500 81 81 62-136 0 <br /> nm - The analyte was not detected in one or more of the duplicate analyses Therefore, calculation of <br /> the RPD is not applicable <br />