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Lancaster Analysis Report <br /> Laboratories Y P <br /> ' 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax 717-656-2681.www.lancasterlabs.com <br /> Page I of 5 <br /> ' Quality Control Summary <br /> Client Name: Chevron Group Number: 1120345 <br /> ' Reported: 11/26/08 at 03:10 PM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted. In these situations, to demonstrate precision and accuracy at <br /> a batch level, a LCS/LCSD was performed, unless otherwise specified in the <br /> ' method. <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result XL Units %RBC %REC Limits RPD RPD Max <br /> Batch number: 083220014A Sample number(s) : 5530849,5530851,5530853,5530855 <br /> DRO (C10-C28) 36 32. ug/1 103 101 63-119 1 20 <br /> Batch number: 083220035A Sample number(s) : 5530857 <br /> DRO (C10-C28) N.D. 32. ug/l 98 103 63-119 5 20 <br /> Batch number: 083220036A Sample number(s) : 5530859,5530861,5530863 <br /> ' DRO (C10-C28) N.D. 32. ug/l 101 94 63-119 8 20 <br /> Batch number: 083230030A Sample number(s) : 5530865,5530867,5530869,5530871 <br /> DRO (CID-C28) N.D. 32. ug/l 103 105 63-119 2 20 <br /> Batch number: 083231848006 Sample numberls) : 5530850 <br /> Lead N.D. 6.9 ug/l 97 90-113 <br /> Batch number: 08323B07A Sample number(s) : 5530849,5530851,5530853 <br /> TPH-GRO N. CA water C6-C12 N.D. 50. ug/l 11B 118 75-135 0 30 <br /> ' Batch number: 083241848004 Sample number(s) : 5530852,5530854,5530856,553QB58,5530860,5530862 <br /> Lead N.D. 6.9 ug/l 101 90-113 <br /> Batch number: 083241848005 Sample number(s) : 5530864,5530866,5530868,5530870,5530872 <br /> Lead N.D. 6.9 ug/l 99 90-113 <br /> Batch number: 08324A20A Sample number(s) : 5530855 <br /> TPH-GRO N. CA water C6-C12 N.D. 5o. ug/l 117 108 75-135 7 30 <br /> Batch number: 08326A07A Sample number(s) : 5530857,5530859,5530861,5530863 <br /> TPH-GRO N. CA water C6-C12 N.D. 50. ug/l 118 118 75-135 0 30 <br /> ' Batch number: 08329A07A Sample number(s) : 5530865,5530867,5530869,5530871 <br /> TPH-GRO N. CA water C6-C12 N.D. 50. ug/l 109 118 75-135 8 30 <br /> Batch number: D083291AA Sample number(s) : 5530873 <br /> ' Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 97 73-119 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 87 79-113 <br /> t-Butyl alcohol N.D. 2. ug/l 90 74-117 <br /> Benzene N.D. 0.5 ug/1 92 78-119 <br /> Toluene N.D. 0.5 ug/l 92 85-115 <br /> Ethylbenzene N.D. 0.5 ug/l 89 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 90 83-113 <br /> Batch number: F083264AA Sample number(s) : <br /> 5530849,5530851,5530853,5530855,5530857,5530859,5530861,5530863,5530865,553086 <br /> 7,5530869,5530871 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/l 97 73-119 <br /> t-Amyl methyl ether N.D. 0.5 ug/l 97 79-113 <br /> *-Outside of specification <br /> ' (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br />