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A • Report <br /> Lancaster Laboratories Page 1 of 2 <br /> Wherequalrty is a science <br /> Quality Control Summary <br /> Client Name Chevron Products Company Group Number 783806 <br /> Reported 11/08/01 at 01 37 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %RSC Limits RPD RPD Max <br /> Batch number 01304A53 Sample number(s) 3714563-3714566 <br /> Benzene N D 0 5 ug/l 96 93 80-118 3 30 <br /> Toluene N D 0 5 ug/l 95 93 82-119 2 30 <br /> Ethylbenzene N D 0 5 ug/l 93 95 81-119 2 30 <br /> Total Xylenes N D 1 5 ug/1 94 90 82-120 4 30 <br /> Methyl Cert-Butyl Ether N D 2 5 ug/1 102 104 79-127 2 30 <br /> TPH-GRO N California (waters) N D 50 ug/l 92 98 76-119 6 20 <br /> Batch number U013022AB Sample numbers) 3714564-3714566 <br /> Ethanol N D 500 ug/l 86 70-130 <br /> Methyl t-butyl ether N D 2 ug/l 96 77-127 <br /> di-isopropyl ether N D 2 ug/1 97 74-125 <br /> Ethyl t-butyl ether N D 2 ug/1 95 74-120 <br /> t-Amyl methyl ether N D 2 ug/1 94 77-118 <br /> t-Butyl alcohol N D 100 u9/1 95 58-147 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD • <br /> Analysis Name %RSC %REC Limits RPD MAX Como Cone RPD Max <br /> Batch number 01304A53 Sample number(s) 3714563-3714566 <br /> TPH-GRO N California (waters) 98 95 74-132 4 20 <br /> Batch number U013022AB Sample number(s) 3714564-3714566 <br /> Ethanol 96 103 70-130 7 30 <br /> Methyl t-butyl ether 97 91 69-134 6 30 <br /> di-isopropyl ether 98 92 75-128 5 30 <br /> Ethyl t-butyl ether 95 93 73-123 2 30 <br /> t-Amyl methyl ether ' 93 92 69-126 2 30 <br /> t-Butyl alcohol 100 96 50-157 4 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-CRO N California (waters) <br /> Batch number 01304A53 <br /> Trifiuorotoluene-F Trifluorotoluene-P <br /> 3714563 103 96 <br /> 3714564 97 98 <br /> 3714565 96 94 <br /> 3714566 97 97 <br /> Blank 102 97 <br /> LCS 109 96 <br /> LCSD 111 97 <br /> *-Outside of specification <br /> (1) The result for one or both detemunations was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> M E M 13 E 13 2425 New Holland Pike <br /> ® PO Box 12425 <br /> Lancaster PA 17605-2425 <br /> 717-6562300 Fax 717656-2681 2216 Rev 9/11/00 <br />