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FRIEDMAN & BRUYA, INC. <br /> ' ENVIRONMENTAL CHEMISTS <br /> Date of Report: 07/24/98 <br /> Date Received: 07/10/98 <br /> Project: 4780 <br /> ' QUALITY ASSURANCE RESULTS <br /> FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL EXTRACTABLE <br /> ' PETROLEUM HYDROCARBONS BY GC/FID (MODIFIED 8015 ) <br /> Laboratory Code: 807048.05 (Matrix Spike) Silica <br /> ' Relative <br /> Reporting Spike Sample % Recovery % Recovery Acceptance Percent <br /> Analyte Units Level Result MS MSD Criteria Difference <br /> Crude µg/g (ppm) 500 <50 83 90 41.170 8 <br /> Laboratory Code: Laboratory Control Sample Silica <br /> ' Reporting Spike %Recovery Acceptance <br /> Analyte Units Level LCS Criteria <br /> Crude n/g (ppm) 500 101 59-138 <br /> 1 <br />