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til fi <br /> eurons <br /> Lancaster Analysis Report <br /> Laboratories <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasteriabs.com <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgmt Co Group Number: 1339270 <br /> Reported: 10/15/12 at 11:01 AM <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 RSC %RSC Limits RPD MAX Conc Conc RPD Max <br /> Toluene 93 91 83-127 1 30 <br /> Xylene (Total) 93 92 81-137 2 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: VOCs 25 ml purge 8260 <br /> Batch number: C122771AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 6807887 100 103 100 96 <br /> 6807888 101 103 99 98 <br /> 6807889 101 102 99 97 <br /> Blank 100 103 99 97 <br /> LCS 99 100 102 102 <br /> MS 99 99 101 102 <br /> MSD 98 100 100 101 <br /> Limits: 77-114 74-113 77-110 78-110 <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 12277WAJO26 <br /> Nitrobenzene-6 2-Fluorobiphenyl Terphenyl-d14 <br /> 6807888 105 76 82 <br /> 6807889 121 64 95 <br /> Blank 110 95 93 <br /> LCS 120 95 87 <br /> LCSD 117 92 85 <br /> Limits: 52-149 55-151 45-127 <br /> Analysis Name: TPH-DRO water C10-C25 <br /> Batch number: 122770027A <br /> Orthoterphenyl <br /> 6807888 97 <br /> 6807889 90 <br /> Blank 92 <br /> LCS 94 <br /> LCSD 103 <br /> Limits: 45-114 <br /> Analysis Name: TPH-DRO water C10-C25 w/Si Gel <br /> Batch number: 122860020A <br /> 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 />