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Lancasterr <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2661•www.lancasterlabs.com ' <br /> Page 8 of 14 <br /> Quality Control Summary ' <br /> Client Name: Chevron Group Number: 1127396 <br /> Reported: 01/21/09 at 05 :10 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 DUP Dup RPD ' <br /> Analysis Nam s %REC %RISC Limits RPD MAX Cono Conc RPD Max <br /> 1,3-Dichlorobenzene 104 108 79-123 4 30 <br /> 1,4-Dichlorobenzene 104 108 81-122 4 30 <br /> n-Butylbenzene 110 112 70-141 2 30 <br /> 1,2-Dichlorobenzene 103 106 82-117 3 30 <br /> 1,2-Dibromo-3-chloropropane 94 101 60-131 7 30 <br /> 1,2,4-Trichlorobenzene 103 107 60-121 3 30 <br /> Hexachlorobutadiene 109 114 51-135 5 30 <br /> Naphthalene 97 101 57-125 4 30 <br /> 1,2,3-Trichlorobenzene 104 107 65-127 3 30 <br /> Acetone 98 99 54-150 1 30 ' <br /> Carbon Disulfide 118 122 69-146 3 30 <br /> 2-Butanone 98 102 57-137 3 30 <br /> trans-1,3-Dichloropropene 100 103 77-123 3 30 <br /> cis-1,3-Dichloropropene 104 108 72-124 3 30 <br /> 4-Methyl-2-pentanone 100 104 61-131 4 30 <br /> 2-Hexanone 94 97 60-135 3 30 <br /> 2-Chlorcethyl Vinyl Ether 0* 0* 1-156 0 30 <br /> Freon 113 142 146 72-154 3 30 <br /> Batch number: N090152AA Sample number(s) 5573131,5573134-5573135 UNSPK: P575346 <br /> Ethanol 47 58 32-164 21 30 <br /> Methyl Tertiary Butyl Ether 107 107 69-127 1 30 <br /> di-Isopropyl ether 102 104 68-129 3 30 <br /> Ethyl t-butyl ether 105 107 78-119 2 30 <br /> t-Amyl methyl ether 104 105 72-125 1 30 <br /> t-Butyl alcohol 87 87 70-121 1 30 I <br /> Dichlorodifluoromethane 140 137 52-192 2 30 <br /> Chloromethane 122 123 58-157 0 30 <br /> Vinyl Chloride 110 111 68-147 1 30 <br /> Bromomethane 120 120 54-140 0 30 <br /> Chloroethane 112 108 60-140 3 30 I <br /> Trichlorofluoromethane 123 125 68-163 1 30 <br /> 1,1-Dichloroethene 114 114 87-145 1 30 <br /> Methylene Chloride 102 103 79-133 1 30 <br /> trans-1,2-Dichloroethene 108 110 82-133 2 30 <br /> 1,1-Dichloroethane 112 111 85-135 1 30 I <br /> 2,2-Dichloropropane 125 125 79-146 0 30 <br /> cis-1,2-Dichloroethene 105 107 83-126 2 30 <br /> Chloroform 113 114 83-139 0 30 <br /> Bromochloromethane 98 101 82-129 4 30 <br /> 1,1,1-Trichloroethane 129 128 81-142 1 30 <br /> Carbon Tetrachloride 119 121 82-149 1 30 <br /> 1,1-Dichloropropene 116 118 86-134 2 30 <br /> Benzene 106 107 83-128 1 30 <br /> 1,2-Dichloroethane 118 120 70-143 2 30 <br /> Trichloroethene 110 112 83-136 2 30 <br /> 1,2-Dichloropropane 101 104 83-129 4 30 <br /> Dibromomethane 106 107 82-128 0 30 <br /> Bromodichloromethane 107 108 80-137 1 30 <br /> Toluene 102 103 83-127 1 30 <br /> 1,1,2-Trichloroethane 97 98 77-125 1 30 <br /> Tetrachloroethene 104 106 78-133 3 30 I <br /> 1,3-Dichloropropane 99 101 82-121 2 30 <br /> *-Outside of specification <br /> **-This limit was used in the evaluation of the final result for the blank I <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 /> I <br /> I <br />