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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike. PC Box 12425,Lancaster.PA 17605-2425•717-656-2300 Fax 717-656-2681•www.larcasterlabs.com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 940723 <br /> Reported: 05/19/05 at 10:23 AM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max_ <br /> TPH-GRO - Waters 106 104 63-154 1 30 <br /> Batch number: M051151AA Sample number(s) : 4510256-4510258 <br /> Benzene 109 104 85-126 5 30 <br /> Toluene 108 109 84-121 1 30 <br /> Ethylbenzene 107 106 88-121 1 30 <br /> Xylene (Total) 110 109 90-122 1 30 <br /> Surrogate Quality Control <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 05116WAGO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 4510257 92 104 98 <br /> 4510258 88 107 98 <br /> Blank 84 99 116 <br /> LCS 104 95 96 <br /> LCSD 100 90 95 <br /> Limits: 70-130 70-130 70-130 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 05118A08C <br /> Trifluorotoluene-F <br /> 4510257 101 <br /> Blank 98 <br /> LCS 103 <br /> LCSD 100 <br /> MS 101 <br /> MSD 100 <br /> Limits: 70-142 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 0512OA08B <br /> Trifluorotoluene-F <br /> 4510258 95 <br /> Blank 98 <br /> LCS 101 <br /> LCSD 100 <br /> MS 128 <br /> MSD 126 <br /> Limits: 70-142 <br /> Analysis Name: TPH-DRO CALUFT(Waters) <br /> Batch number: 051230000A <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 background result was more than four times the spike added. <br />