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Lancaster Laboratories Page 1 of 2 <br />�J <br />Wha.� 'ol Summary <br />REPRINT <br />Client Name: ChevronTexaco Group Number: 8.5748 <br />Reported: 08/08/02 at 06:09 FM <br />Laboratory Compliance Quality Control <br />Blank Blank Report LCS LCSD LCS/LCSD <br />Analysis Name Result MDL Units %REC %RBC Limits RPD RPD Max <br />Batch number: 022050005A Sample number(s): 3858362 <br />Methanol (by Direct Injection) N.D. 200. ug/1 96 64-130 <br />Batch number: N022101AA Sample number(s): 3858362-3858363 <br />Ethanol N.D. 50. ug/l 77 43-159 <br />Methyl t -butyl ether N.D. .5 ug/l 107 77-127 <br />di -Isopropyl ether N.D. .5 ug/l 116 74-125 <br />Ethyl t -butyl ether N.D- .5 ug/1 101 74-120 <br />t -Amyl methyl ether N.D. .5 ug/1 95 71-114 <br />t -Butyl alcohol N.D. S. ug/1 70 59-139 <br />Benzene N.D. .5 ug/I 106 85-117 <br />1,2-Dichloroethane N.D. .5 ug/l 116 77-132 <br />Toluene N.D. .5 ug/l 103 85-115 <br />1,2-Dibromoethane N.D. .5 ug/1 87 81-114 <br />Ethylbenzene N.D. .5 ug/1 104 82-119 <br />Xylene (Total) N.D. .5 ug/1 103 84-120 <br />Sample Matrix Quality Control <br />MS MSD MS/MSD RPD BKG DUP DUP Dup <br />RPD <br />clysis Name %REC %RSC Limits RPD MAX Conc Conc RPD Max <br />Batch number: 022050005A Sample number(s): 3858362 <br />Methanol (by Direct Injection) 96 96 58-137 0 20 <br />Batch number: N022101AA Sample number(s): 3858362-3858363 <br />Ethanol 73 77 34-163 5 30 <br />Methyl t -butyl ether 105 106 69-134 1 30 <br />di -Isopropyl ether 117 118 68-133 1 30 <br />Ethyl t -butyl ether 101 102 73-123 0 30 <br />t -Amyl methyl ether 94 94 69-118 0 30 <br />t -Butyl alcohol 69 70 51-148 2 30 <br />Benzene 111 111 78-134 0 30 <br />1,2-Dichloroethane 115 116 73-136 1 30 <br />Toluene 107 107 83-127 0 30 <br />1,2-Dibromoethane 86 87 78-120 2 30 <br />Ethylbenzene 110 109 82-134 0 30 <br />Xylene (Total) 108 109 82-130 0 30 <br />Surrogate Quality Control <br />Analysis Name: Methanol and Ethanol <br />*- Outside of specification <br />(1) The result for one or both determinations was less than five times the LOQ. <br />*(The background result was more than four times the spike added. <br />Lancaster Laboratories, Inc. <br />M I- M 8 E R 2425 New Holland Pike <br />PO Box 12425 <br />Lancaster, 00 17605-2425 <br />Fax;77-6 <br />717-556-2300 Fax; 717-b56-2681 <br />2216 Rev.9111/00 <br />