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Lancaster Laboratories Analysis Report 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425-717-656-2300 Fax:717-656-2681•www.larcasterIabs.com Page 1 of 5 Quality Control Summary Client Name: Chevron Environmental Mgt. Co. Group Number: 1120845 Reported: 12/09/08 at 11:16 AM Matrix QC may not be reported if site-specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD was performed, unless otherwise specified in the method. Laboratory Compliance Quality Control Blank Blank Blank Report LCS LCSD LCS/LCSD Analysis Name Result MDL** Loo Units %REC %REC Limits RPD RPD Max Batch number: 08329SLGO26 Sample number(s) : 5533798-5533799,5533802-5533805 Naphthalene N.D. 0.00067 0.0017 mg/kg 86 67-105 Acenaphthylene N.D. 0.00033 0.0017 mg/kg 91 67-100 Acenaphthene N.D. 0.00067 0.0017 mg/kg 92 73-104 Fluorene N.D. 0.00067 0.0017 mg/kg 97 75-110 Phenanthrene N.D. 0.00067 0.0017 mg/kg 98 76-109 Anthracene N.D. 0.00033 0.0017 mg/kg 90 70-103 Fluoranthene N.D. 0.00067 0.0017 mg/kg 94 78-114 Pyrene N.D. 0.00067 0.0017 mg/kg 89 69-116 Benzo(a)anthracene N.D. 0.00067 0.0017 mg/kg 90 74-112 Chrysene N.D. 0.00033 0.0017 mg/kg 95 79-111 Benzo(b)fluoranthene N.D. 0.00067 0.0017 mg/kg 107 70-125 Benzo(k)fluoranthene N.D. 0.00067 0.0017 mg/kg 106 72-124 Benzo(a)pyrene N.D. 0.00067 0.0017 mg/kg 90 70-109 Indeno(1,2,3-cd)pyrene N.D. 0.00067 0.0017 mg/kg 107 64-127 Dibenz(a,h)anthracene N.D. 0.00067 0.0017 mg/kg 110 63-138 Benzo(g,h,i)perylene N.D. 0.00067 0.0017 mg/kg 103 58-131 Batch number: 083310027A Sample number(s) : 5533797-5533805 Total TPH N.D. 4.0 12 mg/kg 95 97 66-113 2 20 C10-C36 N.D. 4.0 12 mg/kg Batch number: 08331SLA026 Sample number(s) : 5533797,5533801 Naphthalene N.D. 0.00067 0.0017 mg/kg 84 67-105 Acenaphthylene N.D. 0.00033 0.0017 mg/kg 90 67-100 Acenaphthene N.D. 0.00067 0.0017 mg/kg 92 73-104 Fluorene N.D. 0.00067 0.0017 mg/kg 99 75-110 Phenanthrene N.D. 0.00067 0.0017 mg/kg 103 76-109 Anthracene N.D. 0.00033 0.0017 mg/kg 90 70-103 Fluoranthene N.D. 0.00067 0.0017 mg/kg 100 78-114 Pyrene N.D. 0.00067 0.0017 mg/kg 99 69-116 Benzo(a)anthracene N.D. 0.00067 0.0017 mg/kg 96 74-112 Chrysene N.D. 0.00033 0.0017 mg/kg 101 79-111 Benzo(b)fluoranthene N.D. 0.00067 0.0017 mg/kg 112 70-125 Benzo(k)fluoranthene N.D. 0.00067 0.0017 mg/kg 110 72-124 Benzo(a)pyrene N.D. 0.00067 0.0017 mg/kg 93 70-109 Indeno(1,2,3-cd)pyrene N.D. 0.00067 0.0017 mg/kg 111 64-127 Dibenz(a,h)anthracene N.D. 0.00067 0.0017 mg/kg 112 63-138 Benzo(g,h,i)perylene N.D. 0.00067 0.0017 mg/kg 109 58-131 Batch number: 08337SLD026 Sample number(s) : 5533800 Naphthalene N.D. 0.00067 0.0017 mg/kg 80 67-105 Acenaphthylene N.D. 0.00033 0.0017 mg/kg 82 67-100 Acenaphthene N.D. 0.00067 0.0017 mg/kg 87 73-104 Fluorene N.D. 0.00067 0.0017 mg/kg 91 75-110 Phenanthrene N.D. 0.00067 0.0017 mg/kg 93 76-109 Anthracene N.D. 0.00033 0.0017 mg/kg 79 70-103 *-Outside of specification **-This limit was used in the evaluation of the final result for the blank (1)The result for one or both determinations was less than five times the LOQ. (2)The unspiked result was more than four times the spike added.