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Lancaster, <br /> Laboratories Analysis Reporf <br /> 425 New Holland Pike,PO Banc 12426 Lancaster,PA 17605-2425.717-656-2300 Fax 717-656-2681-WWW IancasterlabS.00111 <br /> Page 1 of 2 <br /> Quality Control Sunmary <br /> Client Name ChevronTexaco Group Number 849374 <br /> Reported 04/29/03 at 09 27 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> hualysis name Result —LL Units RB %RHC XdMits RFP RPV <br /> Batch number 03114AO7B Sample number(s) 4032263-4032265 <br /> TPH-GRO - Waters N D 5o ug/l 112 70-130 l <br /> Batch number 03114A07C Sample number(s) 4032266 <br /> TPH-GRO - Waters N D 50 ug/l 112 70-130 <br /> Batch number P031152AA Sample number(s) 4032263-4032266 <br /> Methyl Tertiary Butyl Ether N D 5 ug/l 95 77-127 <br /> Benzene N D 5 ug/1 101 85-117 <br /> Toluene N D 5 ug/l 96 85-115 <br /> Ethylbenzene N D 5 ug/1 94 82-119 <br /> Xylene (Total) N D 5 ug/l 95 84-120 <br /> Sample Matrix Quality Control <br /> MS NSD XS/MSD RPD 0KG DQP DUP DuP <br /> RPD <br /> Analysis Name %RBC %R8Limits IP--R 2 KM CORP C,onc AE2 Max <br /> Batch number 03114A07B Sample number(s) 4032263-4032265 <br /> lPH-GRO - Waters 101 98 70-130 2 30 <br /> atch number 03114A07C Sample number(s) 4032266 <br /> TPH-GRO - Waters 101 98 70-130 2 30 <br /> Batch number P031152AA Sample number(s) 4032263-4032266 <br /> Methyl Tertiary Butyl Ether 99 98 69-134 1 30 <br /> Benzene 107 107 83-128 0 30 <br /> Toluene 103 103 83-127 1 30 <br /> Ethylbenzene 102 102 82-134 0 30 <br /> Xylene (Total) 101 102 82-130 0 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 03114A07B <br /> Trifluorotoluene-F <br /> 4032263 92 <br /> 4032264 89 <br /> 4032265 94 <br /> Blank 91 <br /> LCS 113 <br /> MS 121 <br /> MSD 121 <br /> Limits 57-146 <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 03114A07C <br /> *-Outside of specification <br /> 1) 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 />