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Page 2 of 7 <br /> Quality Control Summary <br /> Client Name Chevron Products Company Group Number 806252 <br /> Reported 05/23/02 at 11 16 AM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/r-CSD <br /> Analysze Name Result NIDL Unita %REC %"C Lia►its D RPD Max <br /> 1,2-Dibromoothane N D 5 ug/l 99 84-119 <br /> Ethylbenzene N D 5 ug/l 105 88-124 <br /> Xylene (Total) N D 5 ug/l 103 89-124 <br /> Batch number U021262AB Sample number(s) 3814512-3814513,3814515-3814517 <br /> Ethanol N D 50 ug/l 115 44-139 <br /> Methyl t-butyl ether N D 5 ug/l 103 77-127 <br /> di-Isopropyl ether N D 5 ug/l 104 74-125 <br /> Ethyl t-butyl ether N D 5 ug/1 102 74-120 <br /> t-Amyl methyl ether N D 5 ug/l 99 71-114 <br /> t-Butyl alcohol N D 5 ug/1 111 59-139 <br /> Benzene N D 5 ug/1 103 84-120 <br /> 1,2-Dichloroethane N D 5 ug/l 105 77-132 <br /> Toluene N D 5 ug/1 98 86-123 <br /> 1,2-Dibromoethane N D 5 ug/1 99 84-119 <br /> Ethylbenzene N D 5 ug/1 105 86-124 <br /> Xylene (Total) N D 5 ug/l 103 89-124 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPA BAQ DUP DUP Dup <br /> RPD <br /> Analysis Name_ %REC %REC LimLta RPD MAX Conc Cone RPD Max <br /> Batch number 02124A53C Sample number(s) 3814507-3814510 <br /> TPH-GRO - Waters 114 74-132 <br /> Batch number 02126A51A Sample number(s) 3814488-3814495,3814497-3814505,3814517 <br /> TPH-GRO - Waters 114 74-132 <br /> Batch number 02126A51B Sample number(s) 3814506 <br /> TPH-GRO - Waters 114 74-232 <br /> Batch number 0212GA55B Sample number(s) 3814496 <br /> TPH-GRO - Waters 104 74-132 <br /> Batch number 021290022A Sample number(a) 3814488-3814503 <br /> Methanol (by Direct Injection) 100 100 58-137 0 20 <br /> Batch number 021300011A Sample numbers) 3814504-3814516 <br /> Methanol (by Direct Injection) 100 104 58-137 4 20 <br /> Batch number U021261AA Sample numbers) 3814488-3814494 <br /> Ethanol 107 100 70-130 7 30 <br /> Methyl t-butyl ether 101 99 69-134 2 30 <br /> di-Isopropyl ether 104 102 68-133 1 30 <br /> Ethyl t-butyl ether 103 101 73-123 2 30 <br /> t-Amyl methyl ether 100 100 69-118 1 30 <br /> t-Butyl alcohol 106 104 51-148 2 30 <br /> Benzene 108 106 78-134 2 30 <br /> 1,2-Dichloroethane 112 104 75-141 8 30 <br /> Toluene 95 96 78-133 0 30 <br /> 1,2-D3.bromoethane 88 91 78-120 3 30 <br /> Ethylbenzene 99 99 82-134 0 30 <br /> Xylene (Total) 96 98 81--136 2 30 <br /> Batch number U021261AB Sample numbers) 3814495-3814507 <br /> Ethanol 107 100 70-130 7 30 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br />