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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 2 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1084562 <br /> Reported: 04/17/08 at 10:28 PM <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 %RBC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 08102SLB026 Sample number(s) 5321499-5321509 UNSPK: 5321499 <br /> Naphthalene 86 82 27-145 5 30 <br /> Acenaphthylene 87 85 42-141 3 30 <br /> Acenaphthene 82 81 37-145 2 30 <br /> Fluorene 89 86 51-142 4 30 <br /> Phenanthrene 87 85 18-169 3 30 <br /> Anthracene 88 86 34-161 2 30 <br /> Fluoranthene 93 91 36-165 3 30 <br /> Pyrene 92 86 37-154 6 30 <br /> Benzo(a)anthracene 92 89 48-148 4 30 <br /> Chrysene 92 89 53-138 3 30 <br /> Benzo(b)fluoranthene 144 118 42-145 20 30 <br /> Benzo(k)fluoranthene 107 89 40-156 18 30 <br /> Benzo(a)pyrene 123 104 52-131 17 30 <br /> Indeno(1,2,3-cd)pyrene 117 99 43-135 17 30 <br /> Dibenz(a,h)anthracene 118 98 31-135 19 30 <br /> Benzo(g,h,i)perylene 134 112 33-141 18 30 <br /> Batch number: A081021AA Sample number(s) 5321499-5321504 UNSPK: 5321500 <br /> Benzene 110 66-112 <br /> Toluene 106 58-116 <br /> Ethylbenzene 99 54-116 <br /> Xylene (Total) 98 52-117 <br /> Batch number: A081031AA Sample number(s) 5321505-5321509 UNSPK: 5321505 <br /> Benzene 110 66-112 <br /> Toluene 103 58-116 <br /> Ethylbenzene 94 54-116 <br /> Xylene (Total) 92 52-117 <br /> Surrogate Quality Control <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 081020009A <br /> Chlorobenzene Orthoterphenyl <br /> 5321499 97 78 <br /> 5321500 100 75 <br /> 5321501 97 76 <br /> 5321502 97 73 <br /> 5321503 97 72 <br /> 5321504 98 71 <br /> 5321505 96 78 <br /> 5321506 96 75 <br /> 5321507 97 75 <br /> 5321508 97 75 <br /> 5321509 99 76 <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 />