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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.larcasterIabs.com <br /> Page 1 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 988457 <br /> Reported: 05/24/06 at 01:31 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 Units %REC %REC Limits RPD RPD Max <br /> Batch number: 061260013A Sample number(s) : 4765545-4765547,4765549-4765550 <br /> TPH-DRO (C10-C25) Water N.D. 29. ug/l 79 62-127 <br /> Batch number: 06128A54A Sample number(s) : 4765545-4765547,4765550 <br /> TPH-GRO - Waters N.D. 50. ug/l 112 111 70-130 1 30 <br /> Benzene N.D. 0.5 ug/l 100 98 86-119 2 30 <br /> Toluene N.D. 0.5 ug/l 103 100 82-119 2 30 <br /> Ethylbenzene N.D. 0.5 ug/l 105 103 81-119 2 30 <br /> Total Xylenes N.D. 1.5 ug/l 105 104 82-120 1 30 <br /> Batch number: 06128A54B Sample number(s) : 4765549 <br /> TPH-GRO - Waters N.D. 50. ug/l 112 111 70-130 1 30 <br /> Benzene N.D. 0.5 ug/l 100 98 86-119 2 30 <br /> Toluene N.D. 0.5 ug/l 103 100 82-119 2 30 <br /> Ethylbenzene N.D. 0.5 ug/l 105 103 81-119 2 30 <br /> Total Xylenes N.D. 1.5 ug/l 105 104 82-120 1 30 <br /> Batch number: 06128WAGO26 Sample number(s) : 4765545-4765547,4765549-4765550 <br /> Naphthalene N.D. 0.01 ug/l 94 103 61-121 9 30 <br /> Acenaphthylene N.D. 0.02 ug/l 96 97 64-116 1 30 <br /> Acenaphthene N.D. 0.01 ug/l 100 95 78-118 5 30 <br /> Fluorene N.D. 0.01 ug/l 94 93 64-134 1 30 <br /> Phenanthrene N.D. 0.01 ug/l 92 95 79-118 4 30 <br /> Anthracene N.D. 0.02 ug/l 85 87 73-117 3 30 <br /> Fluoranthene N.D. 0.01 ug/l 93 85 61-131 8 30 <br /> Pyrene N.D. 0.02 ug/l 87 101 67-129 15 30 <br /> Benzo(a)anthracene N.D. 0.02 ug/l 87 89 63-119 3 30 <br /> Chrysene N.D. 0.02 ug/l 88 91 80-125 3 30 <br /> Benzo(b)fluoranthene N.D. 0.02 ug/l 92 97 62-124 5 30 <br /> Benzo(k)fluoranthene N.D. 0.01 ug/l 88 90 63-124 2 30 <br /> Benzo(a)pyrene N.D. 0.02 ug/l 83 86 66-118 3 30 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.02 ug/l 99 92 60-123 7 30 <br /> Dibenz(a,h)anthracene N.D. 0.02 ug/l 77 72 68-129 6 30 <br /> Benzo(g,h,i)perylene N.D. 0.02 ug/l 99 95 62-126 5 30 <br /> Batch number: 06129A56A Sample number(s) : 4765548 <br /> Benzene N.D. 0.5 ug/l 102 106 86-119 3 30 <br /> Toluene N.D. 0.5 ug/l 105 109 82-119 3 30 <br /> Ethylbenzene N.D. 0.5 ug/l 109 112 81-119 3 30 <br /> Total Xylenes N.D. 1.5 ug/l 109 112 82-120 3 30 <br /> Batch number: 061330003A Sample number(s) : 4765545,4765547,4765549-4765550 <br /> TPH-DRO(C10-C25)Water w/ SiGel N.D. 29. ug/l 86 83 62-127 4 20 <br /> Sample Matrix Quality Control <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 />