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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 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1001992 <br /> Reported: 09/01/06 at 11:26 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: 06230A53A Sample number(s) : 4843972-4843978 <br /> TPH-GRO - Waters N.D. 50. ug/l 130 120 70-130 8 30 <br /> Benzene N.D. 0.5 ug/l 107 103 86-119 4 30 <br /> Toluene N.D. 0.5 ug/l 108 107 82-119 1 30 <br /> Ethylbenzene N.D. 0.5 ug/l 108 109 81-119 1 30 <br /> Total Xylenes N.D. 1.5 ug/l 110 111 82-120 1 30 <br /> Batch number: 06230WABO26 Sample number(s) : 4843973-4843978 <br /> Naphthalene N.D. 0.01 ug/l 110 70-111 <br /> Acenaphthylene N.D. 0.02 ug/l 102 75-110 <br /> Acenaphthene N.D. 0.01 ug/l 108 81-109 <br /> Fluorene N.D. 0.01 ug/l 106 75-115 <br /> Phenanthrene N.D. 0.01 ug/l 96 76-114 <br /> Anthracene N.D. 0.02 ug/l 89 67-113 <br /> Fluoranthene N.D. 0.01 ug/l 92 69-123 <br /> Pyrene N.D. 0.02 ug/l 116* 76-114 <br /> Benzo(a)anthracene N.D. 0.02 ug/l 110 76-111 <br /> Chrysene N.D. 0.02 ug/l 109 76-112 <br /> Benzo(b)fluoranthene N.D. 0.02 ug/l 96 56-138 <br /> Benzo(k)fluoranthene N.D. 0.01 ug/l 92 68-124 <br /> Benzo(a)pyrene N.D. 0.02 ug/l 92 64-114 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.02 ug/l 117 76-119 <br /> Dibenz(a,h)anthracene N.D. 0.02 ug/l 115 60-126 <br /> Benzo(g,h,i)perylene N.D. 0.02 ug/l 114 74-117 <br /> Batch number: 062340009A Sample number(s) : 4843973-4843978 <br /> TPH-DRO (C10-C25) Water 36. 29. ug/l 93 62-127 <br /> Batch number: 062400032A Sample number(s) : 4843974-4843977 <br /> TPH-DRO(C10-C25)Water w/ SiGel N.D. 29. ug/l 68 62-127 <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: 06230A53A Sample number(s) : 4843972-4843978 UNSPK: 4843977, 4843978 <br /> TPH-GRO - Waters 120 121 63-154 1 30 <br /> Benzene 116 116 78-131 0 20 <br /> Toluene 117 117 78-129 0 30 <br /> Ethylbenzene 117 116 75-133 1 30 <br /> Total Xylenes 118 119 84-131 0 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 />