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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 11 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 conSamp ewMath ixith tQua pi ty Control <br /> rix' Background (BKG) = the sample used in conjunction with the duplicate <br /> Analysis Name MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> %RSC %RBC Limits RPD MAX Conc Conc RPD <br /> 2-Butanone P P ene 103 100 77-123 3 30 100 98 57-137 2 30 <br /> Max! <br /> trans-1,3-Dichloro ro <br /> cis-1,3-Dichloropropene 102 99 72-124 3 <br /> 4-Methyl-2-pentanone 30 <br /> 101 99 61-131 2 30 <br /> 2-Hexanone 97 95 60-135 2 30 <br /> 2-Chloroethyl Vinyl Ether 0* 0* 1-156 0 <br /> Freon 113 30 <br /> 132 127 72-154 4 30 <br /> Batch number: N090191AA Sample number(s) : 5573115 UNSPK: P578246 <br /> Ethanol 77 78 32-164 2 30 <br /> Methyl Tertiary Butyl Ether 107 109 69-127 2 30 <br /> di-Isopropyl ether 102 106 68-129 4 30 <br /> Ethyl t-butyl ether 107 110 78-119 2 30 <br /> t-Amyl methyl ether 105 110 72-125 5 <br /> t-Butyl alcohol 30 <br /> 93 96 70-121 3 30 <br /> Dichlorodifluoromethane 126 128 52-192 1 <br /> Chloromethane 30 <br /> 116 121 58-157 4 30 <br /> Vinyl Chloride 109 113 68-147 4 <br /> Bromomethane 30 <br /> 110 112 54-140 2 30 <br /> Chloroethane 107 112 60-140 4 30 <br /> Trichlorofluoromethane 113 114 68-163 1 30 <br /> ' 1,1-Dichloroethene 116 120 87-145 3 30 <br /> Methylene Chloride 104 106 79-133 1 30 <br /> trans-1,2-Dichloroethene 110 115 82-133 4 30 <br /> 1,1-Dichloroethane 111 112 85-135 1 30 <br /> 2,2-Dichloropropane 123 125 79-146 2 30 <br /> cis-1,2-Dichloroethene 109 109 83-126 0 30 <br /> Chloroform 112 115 83-139 3 30 <br /> Bromochloromethane 105 107 82-129 2 30 <br /> 1,1,1-Trichloroethane 125 127 81-142 1 30 <br /> Carbon Tetrachloride 122 126 82-149 3 30 <br /> 1,1-Dichloropropene 115 123 86-134 6 30 <br /> ' Benzene 108 ill 83-128 3 30 <br /> 1,2-Dichloroethane 115 120 70-143 4 30 <br /> Trichloroethene 113 116 83-136 3 30 <br /> 1,2-Dichloropropane 104 107 83-129 3 30 <br /> Dibromomethane 106 109 82-128 4 30 <br /> ' Bromodichloromethane 108 113 80-137 4 30 <br /> Toluene 102 106 83-127 4 30 <br /> 1,1,2-Trichloroethane 98 103 77-125 5 30 <br /> Tetrachloroethene 105 109 78-133 3 30 <br /> 1,3-Dichloropropane 100 103 82-121 3 30 <br /> Dibromochloromethane 96 101 80-128 4 30 <br /> 1,2-Dibromoethane 98 104 78-120 6 30 <br /> Chlorobenzene 101 105 83-120 3 30 <br /> 1,1,1,2-Tetrachloroethane 104 107 83-119 3 30 <br /> Ethylbenzene 106 108 B2-129 3 30 <br /> ' m+p-Xylene 104 109 82-130 4 30 <br /> o-Xylene 102 106 82-130 4 30 <br /> Styrene 93 98 69-131 5 30 <br /> Bromoform 91 93 64-119 2 30 <br /> Isopropylbenzene 108 113 81-130 5 30 <br /> 1,1,2,2-Tetrachloroethane 92 99 73-121 7 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 /> 1 <br />