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alysis <br /> Reportl <br /> Lancaster Laboratories Page I oft <br /> ! Where quality is a science. <br /> Quality Control Summary <br /> Client Name: Chevron Products Company Group Number: 786893 <br /> Reported: 12/05/01 at 03:34 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number: 01322A51 Sample number(s) : 3729815-3729817 <br /> TPH-GRp N. California (waters) N.D. 50, ug/1 94 94 76-119 0 20 <br /> Batch number: 01323A56 Sample number(s) : 3729818 <br /> TPH-GRO N. California (waters) N.D. 50. ug/1 96 76-119 <br /> Batch number: V013301AA Sample number(s) : 3729815-3729818 <br /> Methyl t-butyl ether N.D. .5 ug/1 96 77-127 <br /> Benzene N.D. .5 ug/l 100 85-125 <br /> Toluene N.D. .5 ug/1 100 86-123 <br /> Ethylbenzene N.D. .5 ug/1 102 88-124 <br /> Xylene (Total) N.D. .5 ug/1 101 89-124 <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 /> CItch number: 01322A51 Sample number(s) : 3729615-3729817 <br /> H-GRO N. California (waters) 98 74-132 <br /> Batch number: 01323A56 Sample number(s) : 3729818 <br /> TPH-GRO N. California (waters) 101 101 74-132 0 20 <br /> Batch number: V013301AA Sample number(s) : 3729815-3729818 <br /> Methyl t-butyl ether 98 98 69-134 0 30 <br /> Benzene 104 105 78-139 1 30 <br /> Toluene 103 106 78-133 3 30 <br /> Ethylbenzene 106 109 82-134 3 30 <br /> Xylene (Total) 106 109 81-136 2 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 01322A51 <br /> Trifluorotoluene-F <br /> 3729815 105 <br /> 3729816 106 <br /> 3729817 103 <br /> Blank 106 <br /> LCS 117 <br /> LCSD 11B <br /> MS 115 <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 E M B E R 2425 New Holland Pike <br /> ® PO Box 12425 <br /> Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax:717-656-2681 2216 Rev.9/11/00 <br />