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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.lancasterlabs.com <br /> 1 Page 9 of 14 <br /> Quality Control Summary <br /> ' Client Name: Chevron Group Number: 1127396 <br /> Reported: 01/21/09 at 05:10 PM <br /> Unspiked (UNSPK) = the sample used in conjSuancmtPioewMatrix ith the tQualpiktyrix Control <br /> ' Background (BKG) = the sample used in conjunction with the duplicate <br /> Analysis Name MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Dibromochloromethane <br /> %REC %RRC Limits RPD MAX Conc Conc RPD <br /> 94 97 80-128 3 30 Ma-�-- <br /> 1,2-Dibromoethane 97 98 78-120 1 30 <br /> Chlorobenzene 100 102 83-120 2 30 <br /> 1,1,1,2-Tetrachloroethane 101 103 83-119 2 30 <br /> Ethylbenzene 105 108 82-129 2 30 <br /> ' m+p-Xylene 105 106 82-130 1 30 <br /> o-Xylene 102 104 82-130 2 30 <br /> Styrene 95 97 69-131 2 30 <br /> Bromoform 83 84 64-119 1 30 <br /> Isopropylbenzene 109 111 81-130 2 30 <br /> ' 1,1,2,2-Tetrachloroethane 93 94 73-121 1 30 <br /> Bromobenzene 98 101 83-121 2 30 <br /> 1,2,3-Trichloropropane 102 103 73-125 1 30 <br /> n-Propylbenzene 108 109 74-138 1 30 <br /> 2-Chlorotoluene 98 101 78-121 3 30 <br /> 1,3,5-Trimethylbenzene 107 109 75-132 2 30 <br /> ' 4-Chlorotoluene 100 102 81-123 1 30 <br /> tert-Butylbenzene 102 105 76-128 3 30 <br /> 1,2,4-Trimethylbenzene 107 108 80-125 1 30 <br /> sec-Butylbenzene 109 112 73-137 3 30 <br /> p-Isopropyltoluene 109 110 74-135 1 30 <br /> ' 1,3-Dichlorobenzene 100 103 79-123 2 30 <br /> 1,4-Dichlorobenzene 100 101 81-122 1 30 <br /> n-Butylbenzene 107 108 70-141 1 30 <br /> 1,2-Dichlorobenzene 99 100 82-117 1 30 <br /> 1,2-Dibromo-3-chloropropane 97 97 60-131 0 30 <br /> 1,2,4-Trichlorobenzene 95 97 60-121 2 30 <br /> Hexachlorobutadiene 96 99 51-135 3 30 <br /> Naphthalene 91 94 57-125 3 30 <br /> 1,2,3-Trichlorobenzene 85 87 65-127 2 30 <br /> Acetone 95 97 54-150 2 30 <br /> Carbon Disulfide 110 110 69-146 0 30 <br /> ' 2-Butanone 100 102 57-137 2 30 <br /> trans-1,3-Dichloropropene 99 100 77-123 1 30 <br /> cis-1,3-Dichloropropene 101 103 72-124 3 30 <br /> 4-Methyl-2-pentanone 102 103 61-131 1 30 <br /> 2-Hexanone 98 100 60-135 2 30 <br /> 2-Chloroethyl Vinyl Ether 0* 0* 1-156 0 30 <br /> Freon 113 133 132 72-154 0 30 <br /> Batch number: N090161AA Sample number(s) : 5573116-5573117,5573136-5573140 UNSPK: <br /> Ethanol 88 81 32-164 7 30 5573138 <br /> Methyl Tertiary Butyl Ether 108 105 69-127 3 30 <br /> di-Isopropyl ether 103 101 68-129 2 30 <br /> Ethyl t-butyl ether 106 103 78-119 3 30 <br /> t-Amyl methyl ether 105 102 72-125 3 30 <br /> t-Butyl alcohol 92 88 70-121 4 30 <br /> ' Dichlorodifluoromethane 127 126 52-192 1 30 <br /> Chloromethane 112 115 SB-157 2 30 <br /> Vinyl Chloride 102 106 68-147 5 30 <br /> Bromomethane 109 110 54-140 0 30 <br /> Chloroethane 108 107 60-140 0 30 <br /> Trichlorofluoromethane 111 111 68-163 0 30 <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 />