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-Arw re <br /> r <br /> Lancaster Laboratories <br /> Where quality Is a science <br /> Page 1 of 2 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 827760 <br /> Reported 11/04/02 at: 06 10 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units NUN %REC Limits RPD RPD Max <br /> Batch number 02296A16A Sample number(s) 3924074-3924076 <br /> TPH-GRO - Waters N D 50 ug/l 102 104 74-116 1 30 <br /> Batch number 023010003A Sample number(s) 3924075-3924076 <br /> Methanol (by Direct In}ection) N D 200 ug/l 88 64-130 <br /> Batch number N023031AD Sample number(s) 3924074-3924076 <br /> Ethanol N D 50 ug/l 96 43-159 <br /> Methyl t-butyl ether N D 5 ug/l 102 77-127 <br /> di-Isopropyl ether N D 5 ug/l 94 74-125 <br /> Ethyl t-butyl ether N D 5 ug/l 91 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 94 71-114 <br /> t-Butyl alcohol N D 5 ug/l 106 59-139 <br /> Benzene N D 5 ug/l 109 85-117 <br /> Toluene N D 5 ug/l 109 85-115 <br /> Ethylbenzene N D 5 ug/l 109 82-119 <br /> Xylene (Total) ),1 D 5 ug/l 110 84-120 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name $REC %RSC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 02296A16A Sample number(s) 3924074-3924076 <br /> TPH-GRO - Waters 122 74-132 <br /> Batch number 023010003A Sample number(s) 3924075-3924076 <br /> Methanol (by Direct In3ection) 104 104 69-127 0 20 <br /> Batch number N023031AB Sample number(s) 3924074-3924076 <br /> Ethanol 83 88 34-163 6 30 <br /> Methyl t-butyl ether 100 102 69-134 3 30 <br /> di-Isopropyl ether 94 96 68-133 2 30 <br /> Ethyl t-butyl ether 91 96 73-123 5 30 <br /> t-Amyl methyl ether 96 97 69-118 2 30 <br /> t-Butyl alcohol 99 100 51-148 0 30 <br /> Benzene 111 113 78-134 2 30 <br /> Toluene 111 113 83-127 1 30 <br /> Ethylbenzene 111 114 82-134 2 30 <br /> Xylene (Total) 112 113 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 02296A16A <br /> Trifluorotoluene-F <br /> 3924074 112 <br /> 3924075 108 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> 0 (2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> M E M B E R 2425 New Holland Poke <br /> PO Bax 12425 <br /> ® Lancaster PA 17605 2425 <br /> 711-656 2300 Fax 717 656-2681 2216 Rev 9/11100 <br />