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1 Lancaster <br /> L&oratories Analysis Report <br /> ' 2425 New Holland Pike,PO Bat 12425,Lancaster,PA 176052425.717-6562300 Fm:717-656-2681•www1ancasterlabS.com <br /> Page 13 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 MSD MB/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %BEC %BBC Limits RPD MAX cone ConcPtPDD Nax_ <br /> Toluene 106 106 80-125 0 30 <br /> 1,2,3-Trichlorobenzene 81 85 69-119 5 30 <br /> 1,2,4-Trichlorobenzene 83 86 70-124 3 30 <br /> 1,1,1-Trichloroethane 109 110 80-143 1 30 <br /> 1,1,2-Trichloroethane 104 105 77-124 2 30 <br /> Trichloroethene 109 111 88-133 2 30 <br /> Trichlorofluoromethane 106 107 73-152 1 30 <br /> 1,2,3-Trichloropropane 99 97 76-118 1 30 <br /> 1,2,4-Trimethylbenzene 102 101 72-130 1 30 <br /> 1,3,5-Trimethylbenzene 102 101 72-131 1 30 <br /> Vinyl Chloride 103 100 66-133 3 30 <br /> m+p-Xylene 108 107 79-125 1 30 <br /> o-Xylene 104 104 79-125 0 30 <br /> Batch number: N102502AA Sample number(s) : 6075629-6075630,6075633-6075634 UNSPK: P077138 <br /> Acetone 114 52-139 <br /> t-Amyl methyl ether 95 75-122 <br /> Benzene 102 80-126 <br /> Bromobenzene 99 82-115 <br /> Bromochloromethane 107 83-123 <br /> Bromodichloromethane 98 78-125 <br /> Bromoform 82 60-121 <br /> Bromomethane 89 38-149 <br /> 2-Butan0ne 90 57-138 <br /> t-Butyl alcohol 102 67-119 <br /> n-Butylbenzene 93 73-128 <br /> sec-Butylbenzene 100 79-125 <br /> tert-Butylbenzene 101 81-121 <br /> Carbon Disulfide 93 67-135 <br /> Carbon Tetrachloride 108 81-138 <br /> Chlorobenzene 106 87-124 <br /> ' Chloroethane 97 51-145 <br /> 2-Chloroethyl Vinyl Ether 0* 10-151 <br /> Chloroform 106 81-134 <br /> Chloromethane 89 67-154 <br /> 2-Chlorotoluene 100 82-118 <br /> 4-Chlorotoluene 100 84-122 <br /> 1,2-Dibromo-3-chloropropane 83 66-121 <br /> Dibromochloromethane 93 74-116 <br /> 1,2-Dibromoethane 100 77-116 <br /> Dibromomethane 101 83-119 <br /> 1,2-Dichlorobenzene 101 84-119 <br /> 1,3-Dichlorobenzene 101 86-121 <br /> 1,4-Dichlorobenzene 99 85-121 <br /> Dichlorodifluoromethane 100 52-129 <br /> 1,1-Dichloroethane 103 84-129 <br /> 1,2-Dichloroethane 102 66-141 <br /> 1,1-Dichloroethene 104 85-142 <br /> cie-1,2-Dichloroethene 102 85-125 <br /> trans-1,2-Dichloroethene . 108 87-126 <br /> 1,2-Dichloropropane 102 83-124 <br /> 1,3-Dichloropropane 98 81-120 <br /> 2,2-Dichloropropane 106 81-135 <br /> s-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 tban five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br />