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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 1 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 /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted. In these situations,to demonstrate precision and accuracy at <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified in the <br /> method. <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number: 05116WAGO26 Sample number(s) : 4510257-4510258 <br /> Naphthalene N.D. 0.01 ug/l 87 81 70-130 7 30 <br /> Acenaphthylene N.D. 0.01 ug/l 97 94 70-130 3 30 <br /> Acenaphthene N.D. 0.01 ug/l 94 90 70-130 5 30 <br /> Fluorene N.D. 0.01 ug/l 95 91 70-130 4 30 <br /> Phenanthrene N.D. 0.01 ug/l 96 94 70-130 2 30 <br /> Anthracene N.D. 0.01 ug/l 74 77 70-130 4 30 <br /> Fluoranthene N.D. 0.01 ug/l 95 92 70-130 3 30 <br /> Pyrene N.D. 0.01 ug/l 85 83 70-130 2 30 <br /> Benzo(a)anthracene N.D. 0.01 ug/l 87 89 70-130 1 30 <br /> Chrysene N.D. 0.01 ug/l 95 96 70-130 0 30 <br /> Benzo(b)fluoranthene N.D. 0.01 ug/l 98 99 70-130 1 30 <br /> Benzo(k)fluoranthene N.D. 0.01 ug/l 103 98 70-130 4 30 <br /> Benzo(a)pyrene N.D. 0.005 ug/l 68* 73 70-130 7 30 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.01 ug/l 103 102 70-130 1 30 <br /> Dibenz(a,h)anthracene N.D. 0.005 ug/l 86 86 70-130 0 30 <br /> Benzo(g,h,i)perylene N.D. 0.01 ug/l 106 104 70-130 2 30 <br /> Batch number: 05118A08C Sample number(s) : 4510257 <br /> TPH-GRO - Waters N.D. 50. ug/l 109 108 70-130 1 30 <br /> Batch number: 0512OA08B Sample number(s) : 4510258 <br /> TPH-GRO - Waters N.D. 50. ug/l 117 114 70-130 3 30 <br /> Batch number: 051230000A Sample number(s) : 4510257-4510258 <br /> TPH-DRO CALUFT(Waters) N.D. 25. ug/l 90 91 64-125 1 20 <br /> Batch number: M051151AA Sample number(s) : 4510256-4510258 <br /> Benzene N.D. 0.1 ug/l 99 83-120 <br /> Toluene N.D. 1. ug/l 104 89-113 <br /> Ethylbenzene N.D. 1. ug/l 102 88-114 <br /> Xylene (Total) N.D. 1. ug/l 104 88-115 <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: 05118A08C Sample number(s) : 4510257 <br /> TPH-GRO - Waters 129 131 63-154 1 30 <br /> Batch number: 0512OA08B Sample number(s) : 4510258 <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 />