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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 3 of 5 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1084091 <br /> Reported: 04/15/08 at 01:17 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 /> Benzo(a)pyrene 85 85 52-131 0 30 <br /> Indeno(1,2,3-cd)pyrene 106 104 43-135 2 30 <br /> Dibenz(a,h)anthracene 107 104 31-135 3 30 <br /> Benzo(g,h,i)perylene 107 104 33-141 2 30 <br /> Batch number: B080941AA Sample number(s) : 5318605,5318607,5318610-5318619 UNSPK: 5318610 <br /> Benzene 91 66-112 <br /> Toluene 95 58-116 <br /> Ethylbenzene 92 54-116 <br /> Xylene (Total) 92 52-117 <br /> Batch number: Q080941AA Sample number(s) : 5318601-5318604,5318606,5318608-5318609 UNSPK: P314354 <br /> Benzene 51* 80 66-112 25 30 <br /> Toluene 98 98 58-116 0 30 <br /> Ethylbenzene 77 91 54-116 14 30 <br /> Xylene (Total) 82 92 52-117 10 30 <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: PAHs in soils by SIM <br /> Batch number: 08098SLHO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5318601 9000* 204* 205* <br /> 5318602 722* 90 141 <br /> 5318603 380* 151* 150* <br /> 5318604 971* 106 108 <br /> 5318605 87 94 93 <br /> 5318606 10102* 185* 229* <br /> 5318607 100 92 97 <br /> 5318608 501* 103 106 <br /> 5318609 288* 116 108 <br /> 5318610 89 91 96 <br /> 5318611 96 101 99 <br /> 5318612 91 99 98 <br /> 5318613 91 96 96 <br /> Blank 91 100 95 <br /> LCS 87 96 98 <br /> MS 92 95 91 <br /> MSD 95 98 92 <br /> Limits: 53-152 63-129 66-142 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 080990020A <br /> Chlorobenzene Orthoterphenyl <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 />