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101 Lancaster. <br /> 1 Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasterlabs.com <br /> Page 1 of 6 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 925298 <br /> Reported: 01/03/05 at 07:38 PM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> ' submitted. In these situations,to demonstrate precision and accuracy at <br /> a batch level,a LCS/LCSD was performed,unless otherwise specified in the <br /> method. <br /> ' Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Batch number: 043520020A Sample number(s) : 4431234-4431251 <br /> TPH - DRO CA LUFT (Soils) N.D. 10. mg/kg 89 50-125 <br /> Batch number: 04354A31A Sample number(s) : 4431234-4431240,4431244-4431250 <br /> TPH-GRO - Soils N.D. 1.0 mg/kg 95 67-119 <br /> Batch number: 04354A31B Sample number(s) : 4431241-4431243 <br /> TPH-GRO - Soils N.D. 1.0 mg/kg 95 67-119 <br /> Batch number: 043555708002 Sample number(s) : 4431234-4431251 <br /> ead N.D. 0.930 mg/kg 98 86-109 <br /> Batch number: 043560002A Sample number(s) : 4431234-4431246 <br /> Ethanol (by Direct Injection) N.D. 200. ug/kg 86 85-112 <br /> Methanol (by Direct Injection) N.D. 200. ug/kg 107 68-129 <br /> Batch number: 043560006A Sample number(s) : 4431247-4431251 <br /> Ethanol (by Direct Injection) N.D. 200. ug/kg 97 85-112 <br /> Methanol (by Direct Injection) N.D. 200. ug/kg 113 68-129 <br /> ' Batch number: 04356A02A Sample number(s) : 4431251 <br /> TPH-GRO - Soils N.D. 1.0 mg/kg 86 67-119 <br /> Batch number: A043441AB Sample number(s) : 4431234,4431238-4431241 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/kg 93 75-125 <br /> di-Isopropyl ether N.D. 1. ug/kg 113 70-129 <br /> Ethyl t-butyl ether N.D. 1. ug/kg 98 71-124 <br /> t-Amyl methyl ether N.D. 1. ug/kg 92 63-129 <br /> t-Butyl alcohol N.D. 20. ug/kg 101 51-160 <br /> Benzene N.D. 0.5 ug/kg 104 77-119 <br /> I 1,2-Dichloroethane N.D. 1. ug/kg 102 76-126 <br /> Toluene N.D. 1. ug/kg 103 81-116 <br /> 1,2-Dibromoethane N.D. 1. ug/kg 89 77-114 <br /> Ethylbenzene N.D. 1. ug/kg 101 82-115 <br /> Xylene (Total) N.D. 1. ug/kg 98 82-117 <br /> Batch number: A043522AB Sample number(s) : 4431235-4431237 <br /> Methyl Tertiary Butyl Ether N.D. 0.5 ug/kg 95 75-125 <br /> di-Isopropyl ether N.D. 1, ug/kg 107 70-129 <br /> Ethyl t-butyl ether N.D. 1. ug/kg 97 71-124 <br /> t-Amyl methyl ether N.D. 1. ug/kg 93 63-129 <br /> t-Butyl alcohol N.D. 20. ug/kg 89 51-160 <br /> Benzene N.D. 0.5 ug/kg 100 77-119 <br /> 1,2-Dichloroethane N.D. 1. ug/kg 100 76-126 <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 />