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Lancaster <br /> Laboratories <br /> • Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425-717-656-2300 Fax:717-656-2661-W W W.iancasteflabs.Com <br /> Page 2 of 4 <br /> I <br /> Quality Control . Summary <br /> . Client Name: Chevron Group Number: 1171911 <br /> Reported: 12/02/09 at 03:35 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- DUR Dup.RPD <br /> Analysis Name %REC REC.- Limits RPD MAX Conc. Conc RPD Max <br /> Benzene 111 101 80-126 9 30 <br /> t-Butyl alcohol 97 90 67-119 8 30 <br /> 1,2-Dibromoethane - 105 96 77-116 9 30 <br /> L 1,2-Dichloroethane 108 66-141 9 30 <br /> Ethanol123 117 37-164 4 30 <br /> Ethyl t-butyl ether 102 95 74-122 8 30 <br /> Ethylbenzene 109 101 71-134 8 30 <br /> di-Isopropyl ether 102 94 70-129 11 30 <br /> Methyl Tertiary Butyl. Ether 102 .102 72-126 0 30 r <br /> Toluene 114 105 80-125 8 30 <br /> Xylene (Total) 116. 105 79-125 10 30 <br /> Batch number: 09327B20A Sample number(s) : 5843079-5843081.UNSPK:. P844295 <br /> TPH-GRO N. CA water C6-C12 127 63-154 <br /> Batch number: 093290024A Sample number(s) : 5843079-5843080 UNSPK: 5843080 <br /> Methanol (by Direct Injection) 116 116 61-131 0 20 <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: BTEX+S Oxygenates+EDC+EDB+ETOH <br /> Batch number: D093274AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 .4-Bromofluorobenzene <br /> 5843079 100 94 94 93 <br /> 5843080 98 94 93 95 <br /> 5843081 97 95 93 94 <br /> Blank 98 94 93 94 <br /> LCS 96 93 93 102 <br /> rr MS 96 92 94 102 <br /> f MSD 97 94 94 102 <br /> Limits: 80-116 77-113 80-113 78-113 <br /> Analysis Name: TPH-GRO N. CA water C6-C12 <br /> Batch number: 09327B20A <br /> Trifluorotoluene-F <br /> ��rrrr 5843079 104 - - <br /> 5843080 107 <br /> 5843081 105 , <br /> Blank 106 <br /> LCS 117 <br /> LCSD 119 <br /> MS 118 <br /> Limits: 63-135 <br /> -Outside of specification <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 /> II <br />