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�I t <br /> L 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.lancasteriabs.com <br /> 'I Page 2 of 5 <br /> n <br /> Quality Control Summary <br /> Client Name: Chevron Group Number: 1271978 <br /> Reported: 11/28/11 at 02:17 PM <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) ,= the sample used in conjunction with the duplicate <br /> y ; <br /> MS MSD MS/MSD RPD -BRG DUP DUP Dup RPD <br /> L Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: D112932AA Sample number(s) : 6441899 UNSPK: P442152 <br /> Benzene 94 105 80-126 11 30 <br /> Ethylbenzene 83 95 71-134 14 30 <br /> L Methyl Tertiary Butyl Ether 86 97 72-126 12 30 <br /> Toluene 84 96 80-125 13 30 <br /> Xylene (Total) 83 94 79-125 13 30 <br /> Bauch number: D112942AA Sample number(s) : 6441900-6441906 UNSPK: 6441900 <br /> _ t-Amyl methyl ether 80 81 75-122 1 30 <br /> Benzene 102 102 80-126 1 30 - <br /> t-Butyl alcohol ; 80 77 67-119 3 30 <br /> 1,2-Dibromoethane 82 83 77-116 1 30 <br /> 1,2-Dichloroethane 68 (2) 87 (2) 66-141 2' 30 <br /> Ethanol t108 89 53-146 19 30 <br /> Ethyl t-butyl ether 86 85 74-122 1 30 <br /> Ethylbenzene 89 88 71-134 0 30 <br /> di=l;Isopropyl ether 91 90 70-129 1 30 <br /> Methyl Tertiary Butyl Ether 88 87 72-126 1 30 <br /> L Toluene 89 90 80-125 1 30 <br /> Xylene (Total) 87 86 79-125 1 30 <br /> 'I ,I <br /> Bauch number: 112920036A Sample number(s) 6441900-6441906 UNSPK: 6441900 <br /> Methanol ! 96 100 52-159 4 20 <br /> i <br /> Surrogate Quality Control <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> r unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: UST VOCs by 8260B - Water <br /> Batch number: D112932AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> ii <br /> 6441899 105 99 93 94 <br /> #r Blank 107 104 94 93 <br /> LCS 103 105 93 100 <br /> MS 11 105 101 92 100 <br /> MSD 102 103 92 101 <br /> V <br /> Limits: 80-116 77-113 80-113 78-113 <br /> Analysis Name: UST VOCs by 8260B - Water <br /> Batch number: D112942AA <br /> Dibromofluoromethane 1,2-Dichloroethane-4 Toluene-d8 4-Bromofluorobenzene <br /> I.. <br /> 6441900 106 108 94 96 <br /> 6441901 105 99 92 93 <br /> 6441902 107 101 92 93 <br /> 6441903 109 106 91 93 <br /> 6441904 107 102 92 94 <br /> 6441905 110 ! 105 92 93 <br /> *-,Outside of specification <br /> (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)iihe unspiked result was more than four times the spike added. <br /> ii <br /> ' n <br /> ii <br /> I! <br />