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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 /> Pagel of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1083640 <br /> Reported: 04/10/08 at 04:09 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: 080950018A Sample number(s) : 5315768-5315774 <br /> Total TPH N.D. 4.0 12. mg/kg 75 80 66-113 7 20 <br /> Batch number: 08096SLD026 Sample number(s) : 5315768-5315774 <br /> Naphthalene N.D. 0.00067 0.0017 mg/kg 85 67-105 <br /> Acenaphthylene N.D. 0.00033 0.0017 mg/kg 79 67-100 <br /> Acenaphthene N.D. 0.00067 0.0017 mg/kg 89 73-104 <br /> Fluorene N.D. 0.00067 0.0017 mg/kg 93 75-110 <br /> Phenanthrene N.D. 0.00067 0.0017 mg/kg 92 76-109 <br /> Anthracene N.D. 0.00033 0.0017 mg/kg 82 70-103 <br /> Fluoranthene N.D. 0.00067 0.0017 mg/kg 97 78-114 <br /> Pyrene N.D. 0.00067 0.0017 mg/kg 92 69-116 <br /> Benzo(a)anthracene N.D. 0.00067 0.0017 mg/kg 89 74-112 <br /> Chrysene N.D. 0.00033 0.0017 mg/kg 95 79-111 <br /> Benzo(b)fluoranthene N.D. 0.00067 0.0017 mg/kg 98 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 85 70-109 <br /> Indeno(1,2,3-cd)pyrene N.D. 0.00067 0.0017 mg/kg 93 64-127 <br /> Dibenz(a,h)anthracene N.D. 0.00067 0.0017 mg/kg 94 46-133 <br /> Benzo(g,h,i)perylene N.D. 0.00067 0.0017 mg/kg 94 58-131 <br /> Batch number: B080932AA Sample number(s) : 5315768-5315774 <br /> Benzene N.D. 0.0005 0.005 mg/kg 103 104 84-115 1 30 <br /> Toluene N.D. 0.001 0.005 mg/kg 99 99 81-116 1 30 <br /> Ethylbenzene N.D. 0.001 0.005 mg/kg 97 96 82-115 1 30 <br /> Xylene (Total) N.D. 0.001 0.005 mg/kg 95 95 82-117 0 30 <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: 080950018A Sample number(s) : 5315768-5315774 UNSPK: 5315770 <br /> Total TPH 75 49-123 <br /> Batch number: 08096SLD026 Sample number(s) : 5315768-5315774 UNSPK: 5315768 <br /> Naphthalene 89 89 27-145 0 30 <br /> Acenaphthylene 82 83 42-141 1 30 <br /> Acenaphthene 91 90 37-145 1 30 <br /> Fluorene 95 95 51-142 1 30 <br /> Phenanthrene 95 95 18-169 0 30 <br /> Anthracene 85 87 34-161 2 30 <br /> Fluoranthene 99 100 36-165 1 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 />