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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: 1029183 <br /> Reported: 03/26/07 at 04:07 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 /> Chrysene 97 97 29-158 1 30 <br /> Benzo(b)fluoranthene 99 103 23-172 4 30 <br /> Benzo(k)fluoranthene 91 93 43-149 2 30 <br /> Benzo(a)pyrene 88 86 39-145 3 30 <br /> Indeno(1,2,3-cd)pyrene 83 84 36-152 2 30 <br /> Dibenz(a,h)anthracene 67 69 23-156 3 30 <br /> Benzo(g,h,i)perylene 84 86 11-164 2 30 <br /> Batch number: B070761AA Sample number(s) : 5004019-5004026 UNSPK: 5004019 <br /> Benzene 94 85 59-120 9 30 <br /> Toluene 93 84 38-131 10 30 <br /> Ethylbenzene 92 82 54-116 11 30 <br /> Xylene (Total) 92 83 44-127 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: Selected SVOA's in soil by SIM <br /> Batch number: 07078SLB026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5004019 99 94 111 <br /> 5004020 101 93 104 <br /> 5004021 92 89 107 <br /> 5004022 105 97 107 <br /> 5004023 87 71 94 <br /> 5004024 101 94 106 <br /> 5004025 103 96 107 <br /> 5004026 101 92 103 <br /> Blank 100 94 105 <br /> LCS 99 92 105 <br /> MS 103 97 105 <br /> MSD 100 95 108 <br /> Limits: 42-142 48-122 51-155 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 070790018A <br /> Chlorobenzene Orthoterphenyl <br /> 5004019 73 79 <br /> 5004020 69 75 <br /> 5004021 73 80 <br /> 5004022 74 89 <br /> 5004023 69 81 <br /> 5004024 65 77 <br /> 5004025 76 78 <br /> 5004026 71 80 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ. <br /> (2) The background result was more than four times the spike added. <br />