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Analysis • • <br /> Lancaster Laboratories Page I of 2 <br /> • Where quablyis ascience <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 808033 <br /> Reported 05/23/02 at 01 50 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result NIDL Units %REC %REC Limits RPD RPD Max <br /> Batch number 02134A33D Sample number(s) 3822057 <br /> TPH-GRO - Soils N D 1 mg/kg 99 75-117 <br /> Batch number D021401AB sample number(s) 3822057 <br /> Methyl t-butyl ether N D 1 ug/kg 110 75-135 <br /> Benzene N D 1 ug/kg 94 85-125 <br /> Toluene N D 1 ug/kg 85 84-125 <br /> Ethylbenzene N D 3 ug/kg 88 86-127 <br /> Xylene (Total) N D 1 ug/kg 91 87-127 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 02134A33D Sample number(s) 3822057 <br /> TPH-GRO - Solls 71 79 44-116 10 30 <br /> Batch number D021401AB Sample number(s) 3822057 <br /> Methyl t-butyl ether 107 96 52-150 11 30 <br /> Benzene 87 90 43-151 3 30 <br /> oluene 79 85 27-163 7 30 <br /> hylbenzene 84 90 30-158 7 30 <br /> ylene (Total) 86 89 46-158 4 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Soils <br /> Batch number 02134A33D <br /> Trifluorotoluene-F <br /> 3822057 89 <br /> Blank 100 <br /> LCS 102 <br /> MS 101 <br /> MSD 105 <br /> Limits 61-127 <br /> Analysis Name UST-Unleaded Soils by 82608 <br /> Batch number D021401AB <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 3822057 107 91 93 109 <br /> Blank 106 91 91 109 <br /> LCS 99 102 93 104 <br /> MS 103 95 97 109 <br /> MSD 99 92 92 107 <br /> Limits 80-120 80-120 81-117 74-121 <br /> *-Outside of Specification <br /> The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> M I- tV1 B E i1 2425 New Holland Pike <br /> Box 12425 <br /> La <br /> Lancaster PA 17605 2425 <br /> 717 656 2300 Fax 717 656 2681 2216 Ftev 9/11/00 <br />