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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 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1079255 <br /> Reported: 03/12/08 at 01:04 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 %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Pyrene 91 77 37-154 16 30 <br /> Benzo(a)anthracene 100 86 48-148 15 30 <br /> Chrysene 99 85 53-138 15 30 <br /> Benzo(b)fluoranthene 98 84 42-145 16 30 <br /> Benzo(k)fluoranthene 98 85 40-156 14 30 <br /> Benzo(a)pyrene 100 85 52-131 17 30 <br /> Indeno(1,2,3-cd)pyrene 96 82 43-135 16 30 <br /> Dibenz(a,h)anthracene 97 83 31-135 16 30 <br /> Benzo(g,h,i)perylene 95 81 33-141 17 30 <br /> Batch number: A080601AA Sample number(s) : 5289727-5289732 UNSPK: P286756 <br /> Benzene 110 66-112 <br /> Toluene 108 58-116 <br /> Ethylbenzene 100 54-116 <br /> Xylene (Total) 96 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: 080610017A <br /> Chlorobenzene Orthoterphenyl <br /> 5289727 105 103 <br /> 5289728 106 106 <br /> 5289729 91 91 <br /> 5289730 95 91 <br /> 5289731 93 91 <br /> 5289732 97 97 <br /> Blank 105 102 <br /> LCS 107 101 <br /> MS 81 98 <br /> MSD 84 97 <br /> Limits: 37-125 47-145 <br /> Analysis Name: Selected SVOA's in soil by SIM <br /> Batch number: 08065SLA026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5289727 102 94 90 <br /> 5289728 117 100 97 <br /> 5289729 107 92 91 <br /> 5289730 97 85 85 <br /> 5289731 107 90 83 <br /> 5289732 106 91 87 <br /> Blank 97 98 100 <br /> LCS 97 96 101 <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 />