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1 <br /> Q U A L I T Y C O N T R O L R E S U L T S <br /> Job Number 992705 Report Date 01/06/2000 <br />' CUSTOMER IT Group PROJECT Southland - Martinez ATTN Rhonda Teicheira <br /> OC Type Description Reag Code Lab ID Dilution Factor Date Time <br />' CV Calibration Verification 09111501 01/06/2000 1107 <br /> Parameter/Test Description CC Result CC Result True Value Or 1g Value Calc Result * Limits F <br /> Benzene 50 61 50 101 85-115 <br /> EthyLbenzene 49 47 50 99 85-115 <br /> Methyl-t-Butyl Ether (MTBE) 245 42 250 98 70-130 <br /> 85-115 <br /> Toluene 51 10 50 102 <br />' xylenes (total) 154 37 150 103 85-115 <br /> MSD Matrix Spike Duplicate 09111501 992702-101/06/2000 1133 <br /> Parameter/Test Description CC Result CC Result True Value Orig Value Calc Result * Limits F <br /> Benzene 57 411 63 82 50 15 15 11 5 20 39-150 <br /> 11 <br /> Ethylbenzene 50 393 52 06 50 2 56 95 7 32-160 <br /> 3 20 <br /> Methyl t-Butyl Ether (MTBE) 1168 995 1161 26 250 1043 52 50 2 50-150 <br /> 1 25 <br />'�ne 49 04 51 96 50 3 73 90 6 46-148 <br /> 6 20 <br /> Xylenes (total) 163 874 166 68 150 11 83 101 4 75-125 <br /> 2 20 <br />' Test Method EPA 82608 Batch 10443 Analyst gfb <br /> Method Description Volatile Organics by GC/MS Units ug/L <br /> MS Matrix Spike 09112901 992556-6 12/07/1999 1705 <br /> Parameter/Test Description CC Result CC Result True Value Orig Value Catc Result * Limits F <br /> tert-Butyl Alcohol (TBA) 1317 66 1000 000000 0 131 8 48-194 <br /> DI-Isopropyl Ether 38 89 50 000000 0 77 8 53-149 <br /> Ethyl tert-Butyl Ether (ETRE) 43 21 50 000000 0 86 4 53-148 <br /> tert-Amyl Methyl Ether 42 90 50 000000 0 85 8 49-158 <br /> Methyl-t-Butyl Ether (MTBE) 111 38 100 000000 0 43 111 0 44-190 <br /> 1,2 DichLoroethane 11 04 10 000000 0 110 4 70-130 <br /> 1,2-Dibromoethane (EDB) 8 29 10 000000 0 82 9 70-130 <br /> MSD Matrix Spike Duplicate 09112901 992556-6 12/07/1999 1740 <br /> Parameter/Test Description CC Result OC Result True Value Orig Value Calc Result * Limits F <br /> tert Butyl Alcohol (TBA) 1036 41 1317 66 1000 000000 0 103 6 48-194 <br /> 24 21 Y <br /> Di-Isopropyl Ether 32 89 38 89 50 000000 0 65 8 53-149 <br /> 17 15 Y <br />' Ethyl tert-Butyl Ether (ETBE) 35 82 43 21 50 000000 0 71 6 53-148 <br /> 19 28 <br /> Amyl Methyl Ether 36 71 42 90 50 000000 0 73 4 49-158 <br /> 16 48 <br /> O94 yL-t-Butyl Ether (MTBE) 94 50 111 38 100 000000 0 43 16 1 44-190 <br />' 16 21 <br /> Page 10 * %=Y. REC, R=RPD, A=ABS Diff , D=% Diff <br />