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ROL RE5ULT5 <br /> Jab Number 992709 QUALITY CONTReport Date 01/06/2000 <br /> ' CUSTOMER IT Group PROJECT Southland - Martinez ATTN Rhonda Teicheira <br /> QC Type Description Reag Code Lab 1D Dilution Factor Date Time <br /> CV Calibration Verification 09111501 01/06/2000 0134 <br /> Parameter/Test Description AC Result oC Result True Value Orig Value Calc Result ' Limits F <br /> Benzene 48 81 50 98 85-115 <br /> Ethylbenzene _ 47 78 50 96 85-115 <br /> Methyl-t-Butyl Ether (MTBE) 268 19 250 107 70-130 <br /> Toluene 49 60 50 99 85-115 <br /> Xylenes (total) 149 81 150 100 85-115 <br /> CV Calibration Verification 09111501 01/06/2000 0227 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> Benzene 49 49 50 99 85-115 <br /> tMEthylbenzene 48 47 50 97 85-115 <br /> ethyl-t-Butyl Ether (MTBE) 253 58 250 101 70-130 <br /> Toluene 49 86 50 100 85-115 <br /> Xylenes (total) 151 42 150 101 85-115 <br /> S Laboratory Control Sample 09111502 01/06/2000 0805 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> Benzene 50 47 50 100 9 39-150 <br /> Ethylbenzene 48 82 50 97 6 32-160 <br /> Methyl-t-Butyl Ether (MTBE) 279 88 250 112 0 50-150 <br /> Toluene 51 43 50 102 9 46-148 <br /> Xylenes (total) 154 69 150 103.1 75-125 <br /> LCD. Laboratory Control Sample Duplicate 09111502 01/06/2000 0830 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> Benzene 50 17 50 47 50 100 3 39-150 <br /> 0.6 20 <br /> Ethylbenzene 48 51 48 82 50 97 0 32-160 <br /> 0 6 20 <br /> Methyl-t-Butyl Ether (MTBE) 252 78 279 88 250 101 1 50-150 <br /> 10 2 25 <br /> Toluene 51 41 51 43 50 102.8 46-148 <br /> 0 0 20 <br /> Xylenes (total) 153 14 154 69 150 102 1 75-125 <br /> 1 0 20 <br /> 'MS , Matrix Spike , I D9�111501' 992702-1 D1/Ob/2000 1015 <br /> Parameter/Test Description QC Result QC Result - True Value Orig Value Calc Result * Limits F <br /> Benzene 63 82 50 15 15 97 3 39-150 <br /> OLne <br /> benzene 52 06 50 2 56 99 0 32-160 <br /> l-tButyl Ether (MTBE) 1161 26 250 1043 52 47 1 50-150 ' X <br /> I '51 96 50 3 73 96 5 46-148 i <br /> Xylenes (total) 166`68 ;' 150 11 83 103 2 75-125 <br /> II �' Page 10 * %=% REC, R=RPD, A=ABS Diff D=Y. Diff <br /> r <br /> I <br />