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Lancasterort <br /> Laboratories Analysis s Report <br /> 25 New Holland Pike PO Box 12425 Lancaster PA 17605-2425 1717-656 2300 Fax 717 656-2681•www lancasteriabs com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 858712 <br /> Reported 07/18/03 at 02 58 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD EKG DIIp DUP Dup <br /> RFA <br /> Analysis Name $REC %REC Limito RPD H. cont Conc RPD Max <br /> o-Xylene 114 112 82-130 2 30 <br /> Acetone 66 66 26-148 0 30 <br /> Batch number P031921AA Sample number(s) 4078851 <br /> Methyl Tertiary Butyl Ether (2) (2) 69-134 0 30 <br /> Benzene 96 94 B3-128 2 30 <br /> Toluene 100 102 83-127 2 30 <br /> Ethylbenzene 98 99 82-134 1 30 <br /> Xylene (Total) 100 99 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 0319OA07C <br /> Trifluorotoluene-F <br /> 4078851 81 <br /> 4078852 81 <br /> O078853 81 <br /> 078859 82 <br /> Blank 81 <br /> LCS 101 <br /> LCSD 103 <br /> MS 106 <br /> Limits 57-146 <br /> Analysis Name Methanol and Ethanol <br /> Batch number 031920002A <br /> Acetone <br /> 4078852 96 <br /> 4078853 98 <br /> 4078854 96 <br /> Blank 97 <br /> LCS 97 <br /> MS 98 <br /> MSD 97 <br /> Limits 72-128 <br /> Analysis Name EPA SW846/8260 (water} <br /> Batch number N031921AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-de 4-Bromofluorobenzene <br /> 4078852 97 94 99 97 <br /> 4078853 96 93 98 95 <br /> 4078854 97 95 97 94 <br /> Blank 97 93 97 95 <br /> LCS 96 94 98 96 <br /> MS 98 95 98 98 <br /> MSD 97 94 98 99 <br /> *-Outside of specification <br /> l) The result for one or both determinations was less than five times the LOQ <br /> 2) The background result was more than four times the spike added <br />