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l <br /> l <br /> i <br /> Q UAL I T Y C O N T R O L R E S U L T S <br /> Job Number 992524 Report Date 12/14/1999 <br /> CUSTOMER IT Group PROJECT: Southland - Martinez ATTN Rhonda Teicheira <br /> QC Type Description Reag Code Lab ID Dilution Factor Date Time <br /> MS Matrix Spike 09112901 942556-6 12/07/1999 170'5 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc 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 QC Result QC Result True Vatue 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 /> tent-Butyl Ether (£TBE) 35 82 43 21 50 000000 0 71 6 53-148 <br /> 19 28 <br /> tert-Amyl Methyl Ether 36 71 42 <br /> lip9D 50 000000 0 73 4 49-158 <br /> 16 48 <br /> Methyl-t-Butyl Ether (MTBE) 94 50 111 38 1D0 000000 0 43 94 1 44-190 <br /> 16 21 <br /> 1,2-Dichloroethane 9 97 11 04 10 000000 0 99 7 70-130 <br /> 10 30 <br /> 1,2-Dibromoethane (EDB) 6 17 8 29 10 000000 0 61 7 70-130 X <br /> I 29 30 - <br /> LCS Laboratory Control Sample 09112409 12/07/1949 2017 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc Result * Limits F <br /> tert-Butyl Alcohol (TBA) 1353.73 1000 000000 135 4 37-175 <br /> Di-Isopropyl Ether 33.07 50 000000 66 1 60-138 <br /> Ethyl tert-Butyl Ether (ETRE) 37 93 50 000000 75 9 51-143 <br /> tert-Amyl Methyl Ether 45 08 50 000000 90 2 64-137 <br /> Methyl-t-Butyt Ether (MTBE) 92 71 100 000000 92 7 33-169 <br /> 1,2-Dichloroethane 11 09 10 000000 110 9 70-130 <br /> 1,2-Dibromoeth8ne (EDB) 8 29 10 000000 82 9 70-130 <br /> MB Method Blank <br /> 12/07/1999 2046 <br /> Parameter/Test Description QC Result QC Result True Value Orig Value Calc. Result * Limits F <br /> tert-Butyl Alcohol (TBA) 0 <br /> Ili-Isopropyl Ether 0 <br /> Ethyl tert-Butyl Ether (ETRE) 0.04 <br /> tert-Amyl Methyl Ether 0 <br /> M thy(-t-Butyl Ether (MTBE) 0 21 <br /> Dichloroethane 0 <br /> Dibromoethane (EDB) 0 <br /> IPage 10 * %=% REC, R=RPD, A=ABS Diff , D=% Diff <br />