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CALTECH Environmental Laboratories <br /> 6814 Rosecrans AvenuE„ Paramount CA 90723-3146 <br /> Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8015M /8021€3 <br /> Matrix Water <br /> Date Analyzed 11/21/03 <br /> Units ug/L <br /> Perimeters LCC LCSD Spike LCS % LCSD% Limas RPD <br /> Added Rec Rec <br /> Benzene 46 44 50 95 88 70-130 7 <br /> Toluene 45 46 50 90 92 70-130 2 <br /> Eth benzene 49 47 50 98 94 70-130 4 <br /> Xylenes 144 138 150 96 92 70-130 4 <br /> TPH- Gasoline 1076 1055 1000 108 106 60-140 2 <br /> TPH- Diesel 1126 1147 1 1000 113 115 60-140 2 <br /> • LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> TOTALLY DEDICAI'I.D 10 CUSTOMER SATISFACTION <br />