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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.lancasterlabs.com <br /> Page 3 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 945012 <br /> Reported: 06/10/05 at 03:08 PM <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 /> Batch number: 05153A15B Sample number(s) : 4532202 <br /> Benzene 123 78-131 <br /> Toluene 118 78-129 <br /> Ethylbenzene 113 75-133 <br /> Total Xylenes 111 86-132 <br /> Surrogate Quality Control <br /> Analysis Name: TPH-DRO CALUFT(Waters) <br /> Batch number: 051470005A <br /> Orthoterphenyl <br /> 4532200 84 <br /> Blank 82 <br /> LCS 110 <br /> LCSD 113 <br /> Limits: 52-134 <br /> Analysis Name: Selected SVOAs by 8270 SIM <br /> Batch number: 05147WAE026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 4532200 93 75 84 <br /> Blank 92 82 95 <br /> LCS 97 88 97 <br /> LCSD 99 91 98 <br /> Limits: 48-162 48-131 51-132 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 051510018A <br /> Chlorobenzene Orthoterphenyl <br /> 4532201 76 88 <br /> Blank 76 91 <br /> LCS 71 99 <br /> LCSD 75 98 <br /> Limits: 22-149 22-170 <br /> Analysis Name: Selected SVOA's in soil by SIM <br /> Batch number: 05151SLD026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 4532201 96 93 104 <br /> Blank 90 91 99 <br /> LCS 91 90 100 <br /> MS 94 91 101 <br /> MSD 92 90 101 <br /> Limits: 41-150 41-148 54-150 <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 />