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1pl�k Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17645-2425 717 656 2300 Fax 717 656 2681•WWW Iancasterlabs Corn <br /> Page 1 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco C/O Cambria Group Number 975959 <br /> Reported 02/08/06 at 10 20 AM <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 %RRC Limita RPD RPD Max <br /> Batch number 06027A02A Sample number(s) 4697533-4697540 <br /> TPH-GRD - Soils N D 1 0 mg/kg 99 67-119 <br /> Batch number 06027A02B Sample number(s) 4697541-4697542 <br /> TPH-GRO - Soils N D 1 0 mg/kg 99 67-119 <br /> Batch number 06027AO713 Sample number{s) 4697543-4697549 <br /> TPH-GRO - Waters N D 50 ug/l 90 105 70-130 16 30 <br /> Batch number 06027A34A Sample number(S) 4697524-4697532 <br /> TPH-GRD - Soils N D 1 0 mg/kg 101 67-119 <br /> Batch number 06027A3413 Sample number(s) 4697552-4697553 <br /> TPH-GRO - Soils N D 1 0 mg/kg 101 67-119 <br /> Batch number 0603IA07A Sample number(s) 4697550-4697551 <br /> TPH-GRD - Waters N D 50 ug/l 92 101 70-130 10 30 <br /> Batch number A060311AA Sample number(s) 4697524-4697540 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/kg 109 75-125 <br /> di-Isopropyl ether N D 1 ug/kg 107 70-129 <br /> Ethyl t-butyl ether N D 1 ug/kg 104 62-131 <br /> t-Amyl methyl ether N D 1 ug/kg 107 63-129 <br /> t-Butyl alcohol N D 20 ug/kg 87 59-142 <br /> Benzene N D 0 5 ug/kg 105 77-119 <br /> 1,2-Dichloroethane N D 1 ug/kg 113 76-126 <br /> Toluene N D 1 ug/kg 97 81-116 <br /> 1,2-Dibromoethane N D 1 ug/kg 101 77-114 <br /> Ethylbenzene N D 1 ug/kg 97 82-115 <br /> Ethanol N D 100 ug/kg 77 1-156 <br /> Xylene (Total) N D 1 ug/kg 96 82-117 <br /> Batch number A060321AA Sample number(s) 4697541-4697542,4697552-4697553 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/kg 100 75-125 <br /> di-Isopropyl ether N D 1 ug/kg 105 70-129 <br /> Ethyl t-butyl ether N D 1 ug/kg 97 62-131 <br /> t-Amyl methyl ether N D 1 ug/kg 97 63-129 <br /> t-Butyl alcohol N D 20 ug/kg 84 59-142 <br /> Benzene N D 0 5 ug/kg 104 77-119 <br /> 1,2-Dzchloroethane N D 1 ug/kg 113 76-126 <br /> Toluene N D 1 ug/kg 97 81-116 <br /> 1,2-Dibromoethane N D 1 ug/kg 95 77-114 <br /> Ethylbenzene N D 1 ug/kg 97 82-115 <br /> Ethanol N D 100 ug/kg 47 1-156 <br /> Xylene (Total) N D 1 ug/kg 94 82-117 <br /> Batch number P060333AA Sample number(s) 4697543-4697545 <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 /> • <br />