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• <br /> ' Q U A L I T Y C 0 N T R 0 L R E S U L T S <br /> Job Number 200207 Report Date 02/03/2000 <br /> i, CUSTOMER IT Group PROJECT Southland - Martinez ATTN Rhonda Tetchetra <br /> QC Type Description Reag Code Lab ID Dilution Factor Date Time <br /> Test Method EPA 82608 Batch 10870 Analyst gfb <br /> Method Description Volatile Organics by GC/MS Units ug/L <br /> LCS Laboratory Control Sample 00012401 02/01/2000 1531 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> tert Butyl Alcohol (TBA) 899 70 1000 000000 90 0 37-175 <br /> Di-Isopropyl Ether 51 66 50 000000 103 3 60-138 <br /> Ethyl tert-Butyl Ether (ETBE) 49 46 50 000000 98 9 51-143 <br /> tert-Amyl Methyl Ether 51 79 50 000000 103 6 64-137 <br /> Methyl-t-Butyl Ether (MTBE) 108 89 100 000000 108 9 33-169 <br /> 1,2-Dichloroethane 10 42 10 000000 104 2 70-130 <br /> 1,2-Dibromoethane (EDB) 10 64 10 000000 106 4 70-130 <br /> ' MB Method Blank 02/01/2000 1559 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> Butyl Alcohol (FBA) 0 <br /> sopropyL Ether 0 <br /> Ethyl tert-Butyl Ether (ETBE) 0 <br /> tert-Amyl Methyl Ether 0 <br /> 1 Methyl-t-Butyl Ether (MTBE) 0 21 <br /> 1,2-Dichloroethane 0 <br /> 1,2-Dibromoethane (EDB) 0 <br /> ' MS Matrix Spike 00012401 200240-2 02/01/2000 2013 <br /> Parameter/Test Description QC Result OC Result True Value Orig Value Calc Result * Limits F <br /> tert-Butyl ALcohol (TBA) 1263 91 1000 000000 0 126 4 34-182 <br /> Di-Isopropyl Ether 51 46 50 000000 0 102 9 60-131 <br /> Ethyl tent-Butyl Ether (ETBE) 51 15 50 000000 0 102 3 64-138 <br /> tert-Amyl Methyl Ether 52 20 50 000000 0 104 4 67-154 <br /> Methyl-t-Butyl Ether (MTBE) 119 26 100 000000 0 16 119 1 71-142 <br /> 1,2-Dichloroethane 10 68 10 000000 0 106 8 70-130 <br /> 1,2-Dibromoethane (EDB) 10 86 10 000000 0 108 6 70-130 <br /> ' MSD Matrix Spike Duplicate 00012401 200240-2 1 02/01/2000 2041 <br /> Parameter/Test Description QC Result QC Result True Value Orig VaLue Calc Result ' Limits F <br /> tert-Butyl ALcohol (TBR) 1255 29 1263 91 1000 000000 0 125 5 34-182 <br /> 1 19 <br /> Di-IsopropyL Ether 48 04 51 46 50 000000 0 96 1 60-131 <br /> 7 24 <br /> Ethyl tert-Butyl Ether (ETBE) 47 59 51.15 50 000000 0 95.2 64-138 <br /> 7 29 <br /> ' tert-Amyl Methyl Ether 48 48 52 20 50 000000 0 97 0 67-154 <br /> 7 27 <br /> yl-t-Butyl Ether (MTBE) 106 41 119 26 100 000000 0 16 106 2 71-142 <br /> ! <br /> ' 11 31 <br /> 1,2-Dichlornethane 10 08 10 68 10 000000 0 100 8 70-130 <br /> 6 30 <br /> Page 9 * %=% REC, R=RPD, A=ABS Diff , D=% Diff <br /> r <br />