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CALTECH Environmental Laboratories <br /> . 6814 Rosecians Avenue Paiarnount CA 90723-3146 <br /> Telephone (562) 272-2700 Far (562) 272-2789 <br /> QA/QC Report <br /> I <br /> Method 8015M /8021 B <br /> Matrix Water <br /> Date Analyzed 10/2/04 <br /> Units ug/L <br /> Perimeters LSC LCSD Spike LCS % LCSD % Limits RPD <br /> Added Rec Rec <br /> Benzene 43 47 50 86 94 70-130 9 <br /> Toluene 44 48 50 88 96 70-130 9 <br /> Eth benzene 49 52 50 98 104 70-130 6 <br /> I <br /> Xylenes 128 148 150 85 99 70-130 16 <br /> TPH - Gasoline 1003 1061 1 1000 100 106 60-140 6 <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> i <br /> I <br /> I <br /> TOTALLY DEDIC ATED FO CUSI OMER SATISFACTION <br />