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OLanicaster Anal sis Report <br /> Laboratories Y p <br /> I 2425 New Holland Pike P4 Box 12425 Lancaster PA 17605-2425 717 656.2300 Fax 717 656.2681 www lancaSterlabs com <br /> Page 2 of 5 <br /> Quality Control Summary <br /> I Client Name Chevron Group Dumber 989164 <br /> Reported 05/25/06 at 02 46 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Re t Ilii is REC 94M Limits RPD RPD Max <br /> 1 2-D�bromoethane N D O S ugJl 99 95 81-114 4 s0 <br /> Ethylbenzene N D o 5 ug/l 98 98 82-119 0 <br /> 83-113 D 30 <br /> Xylene (Total) N D 0 5 ug/1 97 97 <br /> Batch number Z061401AA Sample number(s) 4769393 106 106 35-168 0 30 <br /> Ethanol N D 50 ug/1 <br /> Methyl TerLaary Butyl Ether N D 0 5 ug/l 104 101 73-119 3 30 <br /> dr-Isopropyl ether N D 0 5 ug/l 102 99 67-130 3 30 <br /> Ethyl t-hutyl ether N D 0 5 ug/1 100 96 74-120 9 30 <br /> t-Amyl methyl ether N D 0 5 ug/l 100 94 79-113 6 30 <br /> t-Butyl alcohol N D 5 ug/l 101 96 69-127 5 30 <br /> Benzene N D 0 5 u9/1 102 99 65-117 3 30 <br /> 1,2-Dichloroethane N D 0 5 ug/l 103 loo 77-132 3 30 <br /> Toluene N D o 5 ug/l 100 97 65-115 3 30 <br /> 1,2-Dabromoetnane N D 0 5 ug/1 102 47 61-119 4 30 <br /> Ethylbenzene N D 0 5 ug/l 103 98 82-119 9 30 <br /> Xylene (Total) N D 0 5 ug/1 102 98 83-113 4 30 ¢ <br /> Sample Matrix Quality Control <br /> Unspakea (UNSFK) T the sample usea in ccn3unctaor, with the matrix spike <br /> BackgroLna iBKG) = the sample usea an con3unctlon with the duplicate <br /> MS MSD MS/NSD RFD BKG DUP DUP Dup RPD <br /> A_na31a111_Iism� %RE %RBC Limits BEP KM Con Conc RP)? Maxim � <br /> I Batcn nvmher 06131A16B Sample ni.mber(s) 4769390-4769393 UNSPK P768123 <br /> TPH-GRO - Waters 121 63 154 <br /> Batch n.imber 061410002A Sample number(s) 7769391-4769393 UNSPK P769378 <br />' Methanol Iby Direct InDectaon) 104 9? 81-117 12 20 <br /> Batch number D061421AA Sample number(B) 4769390 UNSPK P769508 <br /> Methyl Tert.ary Butyl Ether 1o5 305 69-127 0 30 <br /> Benzene 110 111 83-128 1 30 <br /> Toluene los 108 63-127 0 30 <br />' Ethylbenzene 104 104 82-329 0 30 <br /> Xylene (ictal) 106 105 82-130 1 30 <br /> Batch nLmber P061391AA Sample numher(s) 4769392 UNSPK P769417 <br /> Ethanol 91 92 34-161 2 3C <br /> Methyl Tertiary H4tyl Ether 96 90 69-127 4 30 <br />' aa-Iscprcpyl ether 96 91 75-130 6 3G <br /> Ethyl t-butyl ether 95 68 78-119 7 30 <br /> t-Amyl methyl ether 94 Be 72-125 7 30 <br /> t-BtAyl alcollcl 94 89 64-130 5 30 <br /> Benzene 100 92 83-128 8 30 <br />' 1 2-DiChlCroethane 98 9. 70-143 5 30 <br /> Toluene 99 52 83-127 6 30 <br /> 1 2-Dabrcmcetnane 93 6F 76-320 6 30 <br /> Ethylbenzene 9e 52 B2-129 7 30 <br /> Xylene (Total; 9e 91 82-130 7 30 <br /> Batch number Z061391AA Sample nLmber(s) 4769391 UNSPK P7E9364 <br /> *- Outside of specification <br /> I l) The result for one or both delermmauons was less than five ,me,the LOQ <br />' (2) The bacl,e_round result was more Ilion four times the spike added <br /> • <br /> 1 <br />