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1 <br /> Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster,PA 1 760 5-242 5.717 658 2300 Fax 717 856 2681•Www lancasterlabs com <br />' Pagel of 2 <br /> Quality Control Summary <br />' Client Name ChevronTexaco Group Number 867544 <br /> Reported 09/30/03 at 03 39 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %RSC Limits RPD RPD Mast <br /> Batch number 03264A16A Sample number(.) 4124592-4124596 <br /> ' TPH-GRO - Waters N D 50 ug/1 107 108 70-130 1 30 <br /> Batch number 032670008A Sample number(s) 4124592-4124596 <br /> Methanol (by Direct Injection) N D 200 ug/1 92 78-114 <br /> ' Batch number P032681AA Sample number(.) 4124592-4124596 <br /> Ethanol N D 50 ug/l 98 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 95 77-127 <br /> di-Isopropyl ether N D 0 5 ug/l 94 74-125 <br /> Ethyl t-butyl ether N D 0 5 ug/1 96 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 96 79-113 <br /> t-Butyl alcohol N D 5 ug/l 97 53-147 <br /> Benzene N D 0 5 ug/l 96 65-117 <br /> 1,2-Dichloroethane N D 0 5 ug/1 96 77-132 <br /> Toluene N D 0 5 ug/l 96 85-115 <br /> ' 1,2-Dibromoethane N D 0 5 ug/l 92 81-114 <br /> Ethylbenzene N D 0 5 ug/l 94 82-119 <br /> Xylene (Total) N D 0 5 ug/l 94 84-120 <br /> 10 <br /> Sample Matrix Quality Control <br /> HS MSD HS/MSD RPD BKG DUP DUP Dup <br /> Analysis llama %RRC RSC Limits �Fp J�X Cvnc Capc RPD RPD <br /> Max <br /> ' Batch number 03264A16A Sample number(s) 4124592-4124596 <br /> TPH-GRO - Waters 111 110 63-154 0 30 <br /> Batch number 032670008A Sample number($) 4124592-4124596 <br /> t Methanol (by Direct Injection) 92 88 73-117 9 20 <br /> Batch number P012661AA Sample numbex(s) 4124592-4124596 <br /> Ethanol 89 94 38-149 6 30 <br /> Methyl Tertiary Butyl Ether 98 97 69-134 1 30 <br /> di-Isopropyl ether 101 99 75-130 1 30 <br /> ' Ethyl t-butyl ether 101 99 78-119 2 30 <br /> t-Amyl methyl ether 99 97 77-117 2 30 <br /> t-Butyl alcohol 95 94 44-150 1 30 <br /> Benzene 104 103 83-128 1 30 <br /> 1,2-Dichloroethane 100 98 73-136 2 30 <br /> ' Toluene 103 101 83-127 2 30 <br /> 1,2-Dibromoethane 96 95 78-120 0 30 <br /> Ethylbenzene 102 101 82-129 1 30 <br /> Xylene (Total) 102 102 82-130 1 30 <br /> ' Surrogate Quality Control <br /> ' Analysis Name TPH-GRO - Waters <br /> Batch number 03264A16A <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 />