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Lancaster �4 <br /> Laboratories nalys►s Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasterIabs.com <br /> Pagel of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1153860 <br /> Reported: 07/29/09 at 11:59 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 Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL** Loo Units %REC %REC Limits RPD RPD Max <br /> Batch number: C092022AA Sample number(s) : 5725478 <br /> Benzene N.D. 0.1 0.5 ug/l 91 88-112 <br /> Ethylbenzene N.D. 0.1 0.5 ug/l 96 89-112 <br /> Toluene N.D. 0.1 0.5 ug/l 96 88-111 <br /> Xylene (Total) N.D. 0.1 0.5 ug/l 98 88-112 <br /> Batch number: 09201WAGO26 Sample number(s) : 5725478 <br /> Acenaphthene N.D. 0.0030 0.0090 ug/l 90 86 68-116 5 30 <br /> Acenaphthylene N.D. 0.0020 0.0050 ug/l 94 86 69-126 9 30 <br /> Anthracene N.D. 0.0030 0.0060 ug/l 98 97 68-122 1 30 <br /> Benzo(a)anthracene N.D. 0.0030 0.0090 ug/l 88 86 80-119 2 30 <br /> Benzo(a)pyrene N.D. 0.0030 0.0090 ug/l 84 90 70-118 6 30 <br /> Benzo(b)fluoranthene N.D. 0.0030 0.0090 ug/l 100 101 75-123 1 30 <br /> Benzo(g,h,i)perylene N.D. 0.0040 0.012 ug/l 90 89 58-138 0 30 <br /> Benzo(k)fluoranthene N.D. 0.0030 0.0090 ug/l 91 90 72-122 1 30 <br /> Chrysene N.D. 0.0020 0.0050 ug/l 91 88 80-124 3 30 <br /> Dibenz(a,h)anthracene N.D. 0.0030 0.0090 ug/l 107 109 60-138 2 30 <br /> Fluoranthene N.D. 0.0030 0.0060 ug/l 99 95 67-133 4 30 <br /> Fluorene N.D. 0.0030 0.0060 ug/l 84 78 49-145 7 30 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.0040 0.012 ug/l 96 95 66-136 0 30 <br /> Naphthalene N.D. 0.0030 0.0090 ug/l 82 78 68-100 5 30 <br /> Phenanthrene 0.0034 0.0030 0.0090 ug/l 121 117 71-124 4 30 <br /> Pyrene N.D. 0.0030 0.0090 ug/l 90 89 68-128 2 30 <br /> Batch number: 091990000A Sample number(s) : 5725478 <br /> TPH-DRO water C10-C25 N.D. 32. 100 ug/l 94 54-122 <br /> Batch number: 092020002A Sample number(s) : 5725478 <br /> TPH-DRO water C10-C25 w/Si Gel N.D. 32. 100 ug/l 68 45-114 <br /> Sample Matrix Quality Control <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in conjunction with the duplicate <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: C092022AA Sample number(s) : 5725478 UNSPK: P725911 <br /> Benzene 93 97 87-126 4 30 <br /> Ethylbenzene 97 101 86-128 4 30 <br /> Toluene 98 102 83-127 4 30 <br /> Xylene (Total) 99 103 84-125 4 30 <br /> *-Outside of specification <br /> **-This limit was used in the evaluation of the final result for the blank <br /> (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br />