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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 4 <br /> REVISED <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 952431 <br /> Reported: 09/09/05 at 01:16 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: 05204WAF026 Sample number(s) : 4569199,4569201-4569203 <br /> Naphthalene N.D. 0.01 ug/l 95 61-121 <br /> Acenaphthylene N.D. 0.02 ug/l 109 64-116 <br /> Acenaphthene N.D. 0.01 ug/l 103 62-112 <br /> Fluorene N.D. 0.01 ug/l 107 64-134 <br /> Phenanthrene N.D. 0.01 ug/l 101 63-139 <br /> Anthracene N.D. 0.02 ug/l 97 57-117 <br /> Fluoranthene N.D. 0.01 ug/l 110 61-131 <br /> Pyrene N.D. 0.02 ug/l 113 67-129 <br /> Benzo(a)anthracene N.D. 0.02 ug/l 114 63-119 <br /> Chrysene N.D. 0.02 ug/l 113 63-139 <br /> Benzo(b)fluoranthene N.D. 0.02 ug/l 97 62-124 <br /> Benzo(k)fluoranthene N.D. 0.01 ug/l 98 63-124 <br /> Benzo(a)pyrene N.D. 0.02 ug/l 89 67-118 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.02 ug/l 113 60-123 <br /> Dibenz(a,h)anthracene N.D. 0.02 ug/l 103 39-122 <br /> Benzo(g,h,i)perylene N.D. 0.02 ug/l 111 62-126 <br /> Batch number: 052060016A Sample number(s) : 4569199,4569201-4569203 <br /> TPH-DRO (C10-C25) Water N.D. 50. ug/l 75 75 64-125 0 20 <br /> Batch number: 05208AO8A Sample number(s) : 4569201 <br /> TPH-GRO - Waters N.D. 50. ug/l 102 102 70-130 1 30 <br /> Batch number: 05208AO8B Sample number(s) : 4569199-4569200,4569202-4569203 <br /> TPH-GRO - Waters N.D. 50. ug/l 102 102 70-130 1 30 <br /> Batch number: 052170010A Sample number(s) : 4569201,4569203 <br /> TPH-DRO(C10-C25)Water w/ SiGel N.D. 50. ug/l 73 76 64-125 5 20 <br /> Batch number: Z052064AA Sample number(s) : 4569199-4569203 <br /> Benzene N.D. 0.5 ug/l 97 85-117 <br /> Toluene N.D. 0.5 ug/l 99 85-115 <br /> Ethylbenzene N.D. 0.5 ug/l 97 82-119 <br /> Xylene (Total) N.D. 0.5 ug/l 94 83-113 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Cone Cone RPD Max <br /> Batch number: 05204WAF026 Sample number(s) : 4569199,4569201-4569203 <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 />