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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425-717-656-2300 Fax:717-656-2681•www.larcasterIabs.com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1084090 <br /> Reported: 04/17/08 at 11:09 AM <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 Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Benzene 103 100 85-126 4 30 <br /> Toluene 103 100 94-128 3 30 <br /> Ethylbenzene 105 101 96-128 3 30 <br /> Xylene (Total) 106 103 91-126 3 30 <br /> Batch number: C081001AA Sample number(s) : 5318600 UNSPK: P322996 <br /> Benzene 106 104 85-126 2 30 <br /> Toluene 106 105 94-128 2 30 <br /> Ethylbenzene 109 107 96-128 2 30 <br /> Xylene (Total) 109 107 91-126 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: TPH-DRO (C10-C25) Water <br /> Batch number: 080930019A <br /> Orthoterphenyl <br /> 5318596 90 <br /> 5318597 117* <br /> 5318598 107 <br /> 5318599 111 <br /> 5318600 106 <br /> Blank 106 <br /> LCS 123* <br /> LCSD 112 <br /> Limits: 45-114 <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 08093WAH026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5318596 104 111 140 <br /> 5318597 114 115 139 <br /> 5318598 126 100 126 <br /> 5318599 108 113 144 <br /> 5318600 105 111 131 <br /> Blank 103 99 119 <br /> LCS 110 105 114 <br /> LCSD 111 108 112 <br /> Limits: 64-161 62-134 61-150 <br /> Analysis Name: TPH-DRO(C10-C25)Water w/ SiGel <br /> Batch number: 081020015A <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 />