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Lancaster Re ort <br /> i' Laboratories Analysis p <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17505 2425•717 656-2300 Fax 717 656 2681•www lancasterlabS com <br /> Page 4 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 894184 <br /> Reported 05/13/04 at 09 38 AM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LC5D LCS/LCSD <br /> Analysis Name ResultlL Units %RBC %RHC Limits RPB RPD Max <br /> 4-Methyl-2-pentancne N D 3 ug/l 95 65-125 <br /> 2-Hexanone N D 3 u9/1 123 47-150 <br /> 2-Chloroethyl Vinyl Ether N D 2 ug/l 82 60-129 <br /> Freon 113 N D 2 ug/l 105 73-140 <br /> Batch number P041272AA Sample number(s) 4264502,4264505-4264507 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 100 77-127 <br /> Benzene N D 5 ug/l 100 85-117 <br /> Toluene N D 5 ug/l 96 85-115 <br /> Ethylbenzene N D 5 ug/l 96 82-119 <br /> Xylene (Total) N D 5 ug/l 99 84-120 <br /> Batch number P041282AA Sample number(s) 4264506 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 106 77-127 <br /> Sample Matrix Quality Control <br /> KS MSD Ms/MSA RPD BKG DUP DVP Dup RPD <br /> Analysis Name %R11C] %REC Limits RPD MM Conc Conc RPD Max <br /> Batch number 04124112601A Sample number(s) 4264503 <br /> 0 70 4 6$ 3 (1) 34 <br /> TRPH 418 1 <br /> Batch number 04124A51A Sample number(&) 4264502-4264503,4264505-4264507 <br /> TPH-GRO - Waters 107 99 63-154 8 30 <br /> Batch number 041251848001 Sample number(s) 4264504 <br /> Cadmium 103 105 87-117 2 20 N D N D 0 (1) 20 <br /> Chromium 102 104 86-118 2 20 N D N D 0 (1) 20 <br /> Lead 102 104 87-118 1 20 N D N D 0 (1) 20 <br /> Nickel 100 101 91-111 1 20 N D N D 0 (1) 20 <br /> Zinc 101 102 80-120 1 20 N D N D 0 (1) 20 <br /> Batch number N041282AA Sample number(s) 4264503 <br /> Ethanol 97 99 41-155 2 30 <br /> Methyl Tertiary Butyl Ether 107 106 69-134 1 30 <br /> di-Isopropyl ether 106 103 75-130 2 30 <br /> Ethyl t-butyl ether 108 108 78-119 0 30 <br /> t-Amyl methyl ether 106 105 77-117 1 30 <br /> t-Butyl alcohol 119 124 51-147 4 30 <br /> Dichlorodifluoromethane 134 134 57-201 0 30 <br /> Chloromethane 115 108 70-148 6 30 <br /> Vinyl Chloride 111 109 70-151 2 30 <br /> Bromomethane 107 104 52-140 2 30 <br /> Chloroethane 108 105 63-142 3 30 <br /> Trichlorofluoromethane 121 117 67-163 4 30 <br /> l,l-Dichloroethene 115 116 78-146 1 30 <br /> Methylene Chloride 109 110 79-133 1 30 <br /> trans-1,2-Dichloroethene 110 109 82-133 1 30 <br /> 1 1-Dichloroethane 109 107 85-135 3 30 <br /> 2,2-Dichloropropane 117 113 78-134 4 30 <br /> cis-1,2-Dichloroethene 111 108 83-126 3 30 <br /> Chloroform 111 108 82-131 2 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 />