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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 2 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 953056 <br /> Reported: 08/19/05 at 11:47 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 /> Naphthalene (2) (2) 67-112 1 30 <br /> Acenaphthylene 81 80 73-110 1 30 <br /> Acenaphthene 86 83 65-115 3 30 <br /> Fluorene 83 82 68-116 1 30 <br /> Phenanthrene 94 96 62-119 2 30 <br /> Anthracene 119 117 1-172 1 30 <br /> Fluoranthene 98 97 47-129 0 30 <br /> Pyrene 120 116 1-167 3 30 <br /> Benzo(a)anthracene 115 114 1-147 1 30 <br /> Chrysene 112 112 42-132 0 30 <br /> Benzo(b)fluoranthene 95 96 25-133 0 30 <br /> Benzo(k)fluoranthene 93 96 23-134 2 30 <br /> Benzo(a)pyrene 99 101 1-152 2 30 <br /> Indeno(1,2,3-cd)pyrene 86 85 1-142 0 30 <br /> Dibenz(a,h)anthracene 83 83 12-116 0 30 <br /> Benzo(g,h,i)perylene 90 90 1-155 0 30 <br /> Batch number: W052101AB Sample number(s) : 4572088 <br /> Benzene 102 102 83-128 1 30 <br /> Toluene 107 106 83-127 1 30 <br /> Ethylbenzene 108 107 82-129 1 30 <br /> Xylene (Total) 108 107 82-130 1 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH-DRO (C10-C25) Water <br /> Batch number: 052130023A <br /> Orthoterphenyl <br /> 4572088 87 <br /> Blank 85 <br /> LCS 108 <br /> LCSD 109 <br /> Limits: 52-134 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 05213A07B <br /> Trifluorotoluene-F <br /> 4572088 91 <br /> Blank 89 <br /> LCS 114 <br /> LCSD 113 <br /> MS 116 <br /> Limits: 70-142 <br /> Analysis Name: Selected SVOAs by 8270 SIM <br /> Batch number: 05213WABO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <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 />