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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 lartoasterlabs 00111 <br /> Page 2 of 4 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 894185 <br /> Reported 05/11/04 at 11 18 PM <br /> Analysis Name RHC %RHC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 04124112601A Sample number(s) 4264517 <br /> T TRPH 418 1 0 70 0 68 3 (1) 34 <br /> Batch number 04124AC7B Sample number(s) 4264509-4264510 <br /> TPH-GRO - Waters 94 83 63-154 5 30 <br /> Batch number 04124A07C Sample number(s) 4264511-4264517 <br /> TPH-GRO - Waters 94 83 63-154 5 30 <br /> Batch number 04124A51A Sample number(s) 4264508 <br /> TPH-GRO - Waters 107 99 63-154 8 30 <br /> Batch number 041250023A Sample number(s) 4264513-4264516 <br /> Methanol (by Direct Injection) 92 92 72-122 0 20 <br /> Batch number P041263AA Sample number(s) 4264513-4264516 <br /> Ethanol 92 92 41-155 0 30 <br /> Methyl Tertiary Butyl Ether 99 97 69-134 2 30 <br /> di-Isopropyl ether 94 91 75-130 3 30 <br /> Ethyl t-butyl ether 94 91 78-119 3 30 <br /> t-Amyl methyl ether 100 97 77-117 3 30 <br /> t-Butyl alcohol 108 106 51-147 2 30 <br /> Benzene 106 102 83-128 3 30 <br /> 1,2-Dichlcroethane 95 92 73-136 4 30 • <br /> Toluene 102 99 93-127 3 30 <br /> 1 2-Dibromoethane 98 95 78-120 4 30 <br /> Ethylbenzene 101 100 82-129 2 30 <br /> Xylene (Total) 104 100 82-130 3 30 <br /> Batch number P041272AA Sample number(s) 4264508-4264512 4264517 <br /> Methyl Tertiary Butyl Ether 94 67 69-134 7 30 <br /> Benzene _ 93 - 87- 83-128 6 30 - - <br /> Toluene 89 84 83-127 6 30 <br /> Ethylbenzene 90 64 82-129 7 30 <br /> Xylene (Total) 91 85 82-130 7 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH - DRO CA LUFT (Waters) <br /> Batch number 041210015A <br /> Orthoterphenyl <br /> 4264509 89 <br /> 4264510 Be <br /> 4264511 62 - <br /> 4264512 77 <br /> 4264513 92 <br /> 4264514 69 <br /> 4264515 92 <br /> 4264516 62 <br /> Blank 86 <br /> LCS 105 <br /> LCSi] 107 <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 />