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CAS, TECH Environmental Laboratories <br /> 681-€ RoSri-tail,, Av,,iiiit- Pdt iiiliuiiit t A 90/23-31 16 <br /> • 16 phone (ti62) 272-2700 1 t. ii62) {7"-278'0 <br /> QA/QC Report <br /> Method 8015M /8021 B <br /> rMatrix Water <br />' Date Analyzed 1119/05 <br /> Date Extracted 1119/05 <br />' Perimeters Conc u L Spike Recovery % Control Limits RPD <br /> LCS LCSD Added LCS LCSD Rec RPD <br /> Benzene 43 1 45 50 86 90 70-130 20 4 <br /> Toluene 44 48 50 88 96 70-130 20 9 <br /> Eth benzene 48 51 50 96 102 70-130 20 6 <br />' <br /> Xylenes 102 109 1 100 102 109 70-130 20 7 <br /> TPH - Gasoline 1045 1072 1 1000 104 107 70-130 20 3 <br />' • LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br />' RPD Relative Percent Difference of LCS and LCSD <br />' Method Blank <br />' Perimeters Method Units Det <br /> Blank Limit <br />' MTBE ND u /L 0 5 <br /> Benzene ND u /L 0 5 <br /> Toluene NOqu <br /> 0 5 <br /> Eth benzene ND 0 5 <br />' <br /> Xylenes ND 1 <br /> TPH - Gasoline ND 50 <br /> • <br /> I (JT4F I DLllC , 1 <br /> I ) () � VIFmR `,AI FSI-ACTION <br /> T I I I t (iI C <br />