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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: 1082757 <br /> Reported: 04/04/08 at 03:16 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 Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL** LOO Units %REC %REC Limits RPD RPD Max <br /> Batch number: 080870029A Sample number(s) : 5310290-5310297 <br /> Total TPH N.D. 4.0 12. mg/kg 91 66-113 <br /> Batch number: 08087SLA026 Sample number(s) : 5310290-5310297 <br /> Naphthalene N.D. 0.00067 0.0017 mg/kg 79 67-105 <br /> Acenaphthylene N.D. 0.00033 0.0017 mg/kg 81 67-100 <br /> Acenaphthene N.D. 0.00067 0.0017 mg/kg 84 73-104 <br /> Fluorene N.D. 0.00067 0.0017 mg/kg 91 75-110 <br /> Phenanthrene N.D. 0.00067 0.0017 mg/kg 87 76-109 <br /> Anthracene N.D. 0.00033 0.0017 mg/kg 86 70-103 <br /> Fluoranthene N.D. 0.00067 0.0017 mg/kg 102 78-114 <br /> Pyrene N.D. 0.00067 0.0017 mg/kg 78 69-116 <br /> Benzo(a)anthracene N.D. 0.00067 0.0017 mg/kg 84 74-112 <br /> Chrysene N.D. 0.00033 0.0017 mg/kg 88 79-111 <br /> Benzo(b)fluoranthene N.D. 0.00067 0.0017 mg/kg 85 70-125 <br /> Benzo(k)fluoranthene N.D. 0.00067 0.0017 mg/kg 92 72-124 <br /> Benzo(a)pyrene N.D. 0.00067 0.0017 mg/kg 80 70-109 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.00067 0.0017 mg/kg 78 64-127 <br /> Dibenz(a,h)anthracene N.D. 0.00067 0.0017 mg/kg 82 46-133 <br /> Benzo(g,h,i)perylene N.D. 0.00067 0.0017 mg/kg 70 58-131 <br /> Batch number: A080851AA Sample number(s) : 5310290 <br /> Benzene N.D. 0.0005 0.005 mg/kg 102 100 84-115 2 30 <br /> Toluene N.D. 0.001 0.005 mg/kg 95 94 81-116 1 30 <br /> Ethylbenzene N.D. 0.001 0.005 mg/kg 92 91 82-115 1 30 <br /> Xylene (Total) N.D. 0.001 0.005 mg/kg 92 92 82-117 0 30 <br /> Batch number: A080852AA Sample number(s) : 5310292-5310295 <br /> Benzene N.D. 0.0005 0.005 mg/kg 101 99 84-115 1 30 <br /> Toluene N.D. 0.001 0.005 mg/kg 94 94 81-116 0 30 <br /> Ethylbenzene N.D. 0.001 0.005 mg/kg 93 92 82-115 1 30 <br /> Xylene (Total) N.D. 0.001 0.005 mg/kg 93 91 82-117 2 30 <br /> Batch number: A080861AA Sample number(s) : 5310291,5310297 <br /> Benzene N.D. 0.0005 0.005 mg/kg 95 93 84-115 2 30 <br /> Toluene N.D. 0.001 0.005 mg/kg 94 91 81-116 3 30 <br /> Ethylbenzene N.D. 0.001 0.005 mg/kg 92 89 82-115 3 30 <br /> Xylene (Total) N.D. 0.001 0.005 mg/kg 92 89 82-117 3 30 <br /> Batch number: R080861AB Sample number(s) : 5310296 <br /> Benzene N.D. 0.025 0.25 mg/kg 98 102 84-115 3 30 <br /> Toluene N.D. 0.050 0.25 mg/kg 97 102 81-116 5 30 <br /> Ethylbenzene N.D. 0.050 0.25 mg/kg 97 100 82-115 4 30 <br /> Xylene (Total) N.D. 0.050 0.25 mg/kg 97 101 82-117 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 />