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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 6 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 944093 <br /> Reported: 06/09/05 at 02:12 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 /> Chrysene 116 132 47-147 13 30 <br /> Benzo(b)fluoranthene 107 118 50-134 10 30 <br /> Benzo(k)fluoranthene 94 100 53-130 6 30 <br /> Benzo(a)pyrene 93 104 50-137 11 30 <br /> Indeno(1,2,3-cd)pyrene 100 110 53-144 9 30 <br /> Dibenz(a,h)anthracene 85 93 55-137 8 30 <br /> Benzo(g,h,i)perylene 110 120 41-143 9 30 <br /> Batch number: 05146A33A Sample number(s) : 4527433 <br /> Benzene 83 87 52-135 4 30 <br /> Toluene 87 90 59-129 4 30 <br /> Ethylbenzene 89 92 56-132 3 30 <br /> Total Xylenes 88 91 54-134 3 30 <br /> Batch number: 05146A33B Sample number(s) : 4527422,4527424-4527425,4527427,4527430-4527432 <br /> Benzene 83 87 52-135 4 30 <br /> Toluene 87 90 59-129 4 30 <br /> Ethylbenzene 89 92 56-132 3 30 <br /> Total Xylenes 88 91 54-134 3 30 <br /> Batch number: Z051441AA Sample number(s) : 4527429 <br /> Benzene 102 102 83-128 1 30 <br /> Toluene 102 103 83-127 1 30 <br /> Ethylbenzene 103 104 82-129 1 30 <br /> Xylene (Total) 101 102 82-130 1 30 <br /> Batch number: Z051444AA Sample number(s) : 4527423,4527426,4527428 <br /> Benzene 105 105 83-128 0 30 <br /> Toluene 106 107 83-127 1 30 <br /> Ethylbenzene 106 107 82-129 1 30 <br /> Xylene (Total) 104 105 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name: Selected SVOAs by 8270 SIM <br /> Batch number: 05140WAG026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 4527423 127 104 99 <br /> 4527426 111 95 96 <br /> 4527428 118 101 82 <br /> Blank 112 100 101 <br /> LCS 112 99 102 <br /> LCSD 112 104 97 <br /> Limits: 48-162 48-131 51-132 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 05142AO8B <br /> Trifluorotoluene-F <br /> 4527429 98 <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 />