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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 /> Page 12 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 Name %RBC %REC Limits RPD MAX Conc Conc RPD Maw_ ' <br /> Bromobenzene 98 105 83-121 7 30 <br /> 1,2,3-Trichloropropane 103 107 73-125 4 30 <br /> n-Propylbenzene 101 110 74-138 9 30 <br /> 2-Chlorotoluene 95 104 78-121 9 30 <br /> 1,3,5-Trimethylbenzene 100 109 75-132 9 30 I <br /> 4-Chlorotoluene 93 104 81-123 12 30 <br /> tert-Butylbenzene 99 109 76-128 10 30 <br /> 1,2,4-Trimethylbenzene 99 109 80-125 10 30 <br /> sec-Butylbenzene 98 112 73-137 14 30 <br /> p-Isopropyltoluene 98 111 74-135 12 30 <br /> 1,3-Dichlorobenzene 94 105 79-123 11 30 <br /> 1,4-Dichlorobenzene 94 104 81-122 11 30 <br /> n-Butylbenzene 87 104 70-141 18 30 <br /> 1,2-Dichlorobenzene 93 103 82-117 11 30 <br /> 1,2-Dibromo-3-chloropropane 93 104 60-131 12 30 <br /> 1,2,4-Trichlorobenzene 75 97 60-121 25 30 <br /> Hexachlorobutadiene 62 88 51-135 35* 30 <br /> Naphthalene 78 96 57-125 20 30 <br /> 1,2,3-Trichlorobenzene 66 89 65-127 30 30 <br /> Acetone 107 109 54-150 2 30 <br /> Carbon Disulfide 102 105 69-146 3 30 <br /> 2-Butanone 102 104 57-137 2 30 <br /> trans-1,3-Dichloropropene 101 103 77-123 2 30 <br /> cis-1,3-Dichloropropene 105 108 72-124 3 30 <br /> 4-Methyl-2-pentanone 102 107 61-131 4 30 <br /> 2-Hexanone 97 102 60-135 5 30 I <br /> 2-Chloroethyl Vinyl Ether 0* 0* 1-156 0 30 <br /> Freon 113 129 132 72-154 3 30 <br /> Surrogate Quality Control , <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: TPH-GRO N. CA water C6-C12 I <br /> Batch number: 09013A07A <br /> Trifluorotoluene-F <br /> 5573128 105 <br /> 5573129 105 <br /> 5573130 106 <br /> 5573131 109 <br /> 5573132 105 <br /> 5573133 105 <br /> 5573134 105 I <br /> 5573135 105 1 <br /> 5573136 107 <br /> 5573137 141* <br /> 5573138 108 <br /> 5573139 104 1 <br /> *-Outside of specification I <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 /> l <br />