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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 /> Pagel of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 886336 <br /> Reported: 03/11/04 at 02:52 PM <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/LCSI)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: 040610001A Sample number(s) ; 4224592-4224596 <br /> Total TPH N.D. 4.0 mg/kg 88 97 77-126 10 20 <br /> C10-C36 N.D. 4.0 mg/kg <br /> Batch number: 04062A31A Sample number(s) : 4224592-4224596 <br /> Benzene N.D. 0.005 mg/kg 106 86-113 <br /> Toluene N.D. 0.005 mg/kg 89 88-113 <br /> Ethylbenzene N.D. 0.005 mg/kg 98 89-112 <br /> Total Xylenes N.D. 0.02 mg/kg 98 90-112 <br /> Batch number: 04066SLA026 Sample number(s) : 4224592-4224596 <br /> Naphthalene N.D. 1. ug/kg 69 37-141 <br /> •enaphthylene N.D. 0.3 ug/kg 43 31-137 <br /> enaphthene N.D. 0.3 ug/kg 63 31-134 <br /> luorene N.D. 0.3 ug/kg 63 44-156 <br /> Phenanthrene N.D. 0.3 ug/kg 67 38-148 <br /> Anthracene N.D. 0.3 ug/kg 45 40-142 <br /> Fluoranthene N.D. 0.7 ug/kg 71 38-147 <br /> Pyrene N.D. 0.3 ug/kg 66 63-134 <br /> Ben zo(a)anthracene N.D. 0.3 ug/kg 62 36-141 <br /> Chrysene N.D. 0.3 ug/kg 65 38-149 <br /> Benzo(b)fluoranthene N.D. 0.3 ug/kg 71 39-152 <br /> Benzo(k)fluoranthene N.D. 0.3 ug/kg 68 38-152 <br /> Benzo(a)pyrene N.D. 0.3 ug/kg 49 41=152 <br /> Zndeno(1,2,3-cd)pyrene N.D. 0.3' ug/kg 67 33-147 <br /> Dibenz(a,h)anthracene N.D. 0.3 ug/kg 64 37-148 <br /> Benzo(g,h,i)perylene N.D. 0.3 ug/kg 72 36-154 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BRG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 040610001A Sample number(s) ; 4224592-4224596 <br /> Total TPH 5.3 N.D. 200* (1) 100 <br /> C10-C36 5.3 N.D. 200* (1) 100 <br /> Batch number: 04062A31A Sample number(s) : 4224592-4224596 <br /> Benzene 102 89 60-111 14 30 <br /> Toluene 85 73 61-114 15 30 <br /> Ethylbenzene 95 81 66-110 15 30 <br /> Total Xylenes 91 78 66-112 15- 3.0 <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 /> i <br />