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CALTECH Environmental Laboratories <br /> ' 5814 Rosecrans Avenue. Para,rount. CA 90723-3146 <br /> O Telephone: (562) 272-2700 V-ax: (56'; 272-?789 <br /> QA/QC Report <br /> 1 <br /> Method: 8015M/8021 B <br /> ' Matrix: Water <br /> Date Analyzed: 10/28/04 <br /> ' Units: ug/L. <br /> ' Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec. Rec. <br /> Benzene 46 45 50 92 90 70-130 2 <br /> Toluene 47 46 50 94 92 70-130 2 <br /> Ethybenzene 50 48 50 100 96. 70-130 4 <br /> Xylenes 1 104 98 100 104 98 70-130 6 <br /> ' TPH - Gasoline 1077 1027 1000 108 103 60-140 5 <br /> • LCS: Laboratory Control Standard <br /> LCSD: Laboratory Control Standard Duplicate <br /> ' RPD: Relative Percent Difference of LCS and LCSD <br /> 1 <br /> 1 <br /> ' TOTALLY DEDICATED TO CUSTOMER SATISFACTION <br />