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� *Lancaster <br /> Laboratories Analysis Report <br /> ' 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-658-2300 Fax:717-656-2881•www.laricasteriabs.com <br /> Page 9 of 21 <br /> Quality Control Summary <br /> ' Client Name: Chevron Group Number: 1210187 <br /> Reported: 09/14/10 at 04:55 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 /> NS NSD NS/NOD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %AHC RBC Limits $PB NU Conc Con. RPD Max <br /> Batch number: N102452AA Sample number(s) : 6075589-6075590 UNSPK: P074515 <br /> Acetone 122 52-139 <br /> t-Amyl methyl ether 99 75-122 <br /> Benzene 111 80-126 <br /> Bromobenzene 107 82-115 <br /> Bromochloromethane 112 83-123 <br /> Bromodichloromethane 111 78-125 <br /> Bromoform 98 60-121 <br /> Bromomethane 93 38-149 <br /> 2-Butanone 98 57-138 <br /> t-Butyl alcohol 107 67-119 <br /> n-Butylbenzene 96 73-128 <br /> ' sec-Butylbenzene 103 79-125 <br /> tert-Butylbenzene 107 81-121 <br /> Carbon Disulfide 106 67-135 <br /> Carbon Tetrachloride 118 81-138 <br /> Chlorobenzene 112 87-124 <br /> Chloroethane 98 51-145 <br /> 2-Chloroethyl Vinyl Ether 0• 10-151 <br /> Chloroform 116 81-134 <br /> Chloromethane 91 67-154 <br /> 2-Chlorotoluene 108 82-118 <br /> 4-Chlorotoluene 106 84-122 <br /> 1,2-Dibromo-3-chloropropane 88 66-121 <br /> Dibromochloromethane 105 74-116 <br /> 1,2-Dibromoethane 109 77-116 <br /> Dibromomethane 109 83-119 <br /> 1,2-Dichlorobenzene 108 84-119 <br /> 1,3-Dichlorobenzene 107 86-121 <br /> 1,4-Dichlorobenzene 107 85-121 <br /> Dichlorodifluoromethane 105 52-129 <br /> 1,1-Dichloroethane 113 84-129 <br /> 1,2-Dichlorcethane 111 66-141 <br /> 1,1-Dichloroethene 119 85-142 <br /> cis-1,2-Dichloroethene 113 85-125 <br /> trans-1,2-Dichloroethene 116 87-126 <br /> 1,2-Dichloropropane 110 83-124 <br /> 1,3-Dichloropropane 105 81-120 <br /> 2,2-Dichloropropane 109 81-135 <br /> 1,1-Dichloropropene 114 86-137 <br /> cis-1,3-Dichloropropene 101 75-125 <br /> trans-1,3-Dichloropropene 99 74-119 <br /> Ethanol 109 37-164 <br /> Ethyl t-butyl ether 97 74-122 <br /> Ethylbenzene 111 71-134 <br /> Freon 113 125 89-148 <br /> Hexachlorobutadiene 85 56-134 <br /> 2-Hexanone 92 55-127 <br /> di-Isopropyl ether 101 70-129 <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 />