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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 /> REPRINT <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 901068 <br /> Reported: 08/06/04 at 12 :25 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/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 Unite REC 96REC Limits RPD RPD Max <br /> Batch number: 04167A34C Sample number(s) : 4298364-4298366 <br /> TPH-GRO - Soils N.D. 1.0 mg/kg 105 67-119 <br /> Batch number: 041760000A Sample number(s) : 4298364-4298366 <br /> Total TPH N.D. 10. mg/kg 102 101 77-126 0 20 <br /> TPH Jet Fuel C9-C19 N.D. 4.0 mg/kg <br /> TPH Motor Oil C16-C36 N.D. 10,. mg/kg <br /> Batch number: 041760001A Sample number(s) : 4298364-4298366 <br /> TPH - DRO CA LUFT (Soils) N.D. 10. mg/kg 78 56-118 <br /> Batch number: R041821AA Sample number(s) : 4298366 <br /> Methyl Tertiary Butyl Ether N.D. 63. ug/kg 100 75-125 <br /> Benzene N.D. 63. ug/kg 99 83-118 <br /> Toluene N.D. 130. ug/kg 98 81-116 <br /> Ethylbenzene N.D. 130. ug/kg 99 82-115 <br /> Xylene (Total) N.D. 130. ug/kg 99 82-117 <br /> Batch number: X041751AB Sample number(s) : 4298364-4298365 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/kg 112 75-125 <br /> Benzene N.D. 0.5 ug/kg 101 83-118 <br /> Toluene N.D. 1. ug/kg 102 81-116 <br /> Ethylbenzene N.D. 1. ug/kg 105 82-115 <br /> Xylene (Total) N.D. 1. ug/kg 103 82-117 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BRCS DIIP DIIP Dup RPD <br /> Analysis Name %REC REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 04167A34C Sample number(s) : 4296364-4298366 <br /> TPH-GRO - Soils 91 95 39-118 4 30 <br /> Batch number: 041760001A Sample number(s) : 4298364-4298366 <br /> TPH - DRO CA LUFT (Soils) 81 75 21-159 8 20 <br /> Batch number: R041821AA Sample number(s) : 4298366 <br /> Methyl Tertiary Butyl Ether 90 97 57-136 7 30 <br /> Benzene 93 97 52-141 4 30 <br /> Toluene 94 97 45-142 3 30 <br /> Ethylbenzene 71 71 40-143 0 30 <br /> Xylene (Total) 49 48 40-143 1 30 <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 />