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Lancaster Analysis Report <br /> Laboratories <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 1 760 5-2 42 5•717-656-2300 Fax:717-656-2681 <br /> •www.lam�teriabs.com <br /> Page 3 of 5 <br /> ' Quality Control Summary <br /> Client Name: Chevron Group Number: 1120345 <br /> ' Reported: 11/26/08 at 03:10 PM <br /> Sample Matrix Quality Control <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in conjunction with the duplicate <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis N %RBC %REC Limits RPD MAX Conc Conc RPD Max <br /> Toluene 110 112 83-127 2 30 <br /> Ethylbenzene 109 112 82-129 3 30 <br /> Xylene (Total) 111 114 82-130 2 30 <br /> Surrogate Quality Control <br /> ' Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: DRO (C10-C28) <br /> Batch number: 083220014A <br /> ' Orthoterphenyl <br /> 5530649 93 <br /> 5530851 108 <br /> 5530853 99 <br /> ' 5530855 86 <br /> Blank 92 <br /> LCS 96 <br /> LCSD 94 <br /> Limits: 59-131 <br /> ' Analysis Name: DRO (C10-C28) <br /> Batch number: 083220035A <br /> Orthoterphenyl <br /> 5530857 99 <br /> Blank 88 <br /> LCS 96 <br /> LCSD 103 <br /> ' Limits: 59-131 <br /> Analysis Name: DRO (C10-C28) <br /> Batch number: 083220036A <br /> Orthoterphenyl <br /> ' 5530859 90 <br /> 5530861 88 <br /> 5530863 82 <br /> Blank 93 <br /> LCS 102 <br /> LCSD 99 <br /> Limits: 59-131 <br /> Analysis Name: DRO (C10-C28) <br /> Batch number: 083230030A - <br /> Orthoterphenyl <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 />