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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PQ Box 12425,Lancaster,PA 176052425•717-656-2300 Fax:717-656.2681•www.lancasteriabs.com <br /> Page 1 of 3 <br /> Quality Control Summary <br /> Client Name: ChevronTexaco Group Number: 890982 <br /> Reported: 04/15/04 at 05 :13 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 Unite %REC %RBC Limits RPD RPD Max <br /> Batch number: 040990003A Sample number(s) : 4249189-4249193 <br /> Total TPH N.D. 10. mg/kg 97 96 77-126 1 20 <br /> TPH Motor Oil C16-C36 N.D. 10. mg/kg <br /> Batch number: 04099A34A Sample number(s) : 4249189-4249193 <br /> TPH-GRO - Soils N.D. 1.0 mg/kg 112 67-119 <br /> Batch number: 041030001A Sample number(s) 4249189-4249193 <br /> TPH - DRO CA LUFT (Soils) N.D. 10_ mg/kg 90 56-118 <br /> Batch number: D040971AB Sample number(s) 4249190-4249193 <br /> methyl Tertiary Butyl Ether N.D. 0.5 ug/kg 103 75-125 <br /> di-Isopropyl ether N.D. 1. ug/kg 87 70-129 <br /> Ethyl t-butyl ether N.D. 1. ug/kg 94 71-124 <br /> t-Amyl methyl ether N.D. 1, ug/kg 95 74-117 <br /> t-Butyl alcohol N.D. 20. ug/kg 98 51-160 <br /> Benzene N.D. 0.5 ug/kg B8 83-IIB <br /> 1,2-Dichloroethane N.D. 1. ug/kg 104 76-126 <br /> Toluene N.D. 1. ug/kg 83 81-116 <br /> 1,2-Dibromoethane N.D. 1, ug/kg 93 77-114 <br /> Ethylbenzene N.D. 1. ug/kg 86 82-115 <br /> Xylene (Total) N.D. 1. ug/kg 90 82-117 <br /> Batch number: Q040982AB Sample number(s) : 4249189 <br /> Methyl Tertiary Butyl Ether N.D. 63, ug/kg 117 75-125 <br /> di-Isopropyl ether N.D. 130. ug/kg 118 70-129 <br /> Ethyl t-butyl ether N.D. 130, ug/kg 108 71-124 <br /> t-Amyl methyl ether N.D. 130. ug/kg 100 74-117 <br /> t-Butyl alcohol N.D, 2,500. ug/kg 105 51-160 <br /> Benzene N.D. 63. ug/kg 103 83-118 <br /> 1,2-Dichloroethane N.D. 130. ug/kg 110 76-126 <br /> Toluene N.D. 130. ug/kg 101 81-116 <br /> 1,2-Dibromoethane N.D. 130, ug/kg 106 77-114 <br /> Ethylbenzene N,D. 130. ug/kg 101 82-115 <br /> Xylene (Total) N.D. 130. ug/kg 101 82-117 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSA RPD BKG DUP DUP Dup RPD <br /> Analysis Name RHC RBC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 04099A34A Sample number(s) : 4249189-4249193 <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 />