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Lancaster <br /> Laboratories Page 1 of 7 <br /> Quality Control Summary <br /> Client Name: Secor international Group Number: 842784 <br /> Reported: 03/05/03 at 07 :48 PM <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: 03057A31B Sample number(s) 4001932-4001937 <br /> TPH-GRO - Soils N.D. 1. mg/kg 92 70 130 <br /> Batch number: 03057A34B Sample number(s) : 4001938-4001942 <br /> TPH-GRO - Soils N.D. 1. mg/kg 91 70-130 <br /> Batch number: 030580003A Sample number(s) 4001931 <br /> TPH - DRO CA LUFT (Soils) N.D. 10. mg/kg 88 56-118 <br /> Batch number: 030580009A Sample number(s) : 4001931 <br /> PCB-1016 N.D. 3.3 ug/kg 89 72-120 <br /> PCB-1221 N.D. 3.3 ug/kg <br /> PCB-1232 N.D. 3.3 ug/kg <br /> PCB-1242 N.D. 3.3 ug/kg <br /> PCB-1246 N.D. 3.3 ug/kg <br /> PCB-1254 N.D. 3.3 ug/kg <br /> 4B-1260 N.D. 3.3 ug/kg 92 76-122 <br /> tch number: 030585708001 Sample number(s) : 4001931 <br /> cadmium N.D. .091 mg/kg 95 88-106 <br /> Chromium 0.15 .15 mg/kg 100 82-114 <br /> Lead N.D. .94 mg/kg 95 86-109 <br /> Nickel N.D. .2 mg/kg 96 89-107 <br /> Zinc 0.78 .36 mg/kg 98 85-111 <br /> Batch number: 03059A33A Sample number(s) : 4001931 <br /> TPH-GRO - Soils N.D. 1. mg/kg 94 70-130 <br /> Batch number: 03061042501A Sample number(s) : 4001931 <br /> Hexavalent Chromium (SOLIDS) N.D. .5 mg/kg 88 80-120 <br /> Batch number: D03OS81AA Sample number(s) : 4001932-4001936,4001942 <br /> Methyl Tertiary Butyl Ether N.D. I. ug/kg 99 75-125 <br /> di-isopropyl ether N.D. 1. ug/kg 81 70-129 <br /> Ethyl t-butyl ether N.D. 1. ug/kg 92 71-124 <br /> t-Amyl methyl ether N.D. 1. ug/kg 95 70-122 <br /> t-Butyl alcohol N.D. 20. ug/kg 96 46-158 <br /> Benzene N.D. 1. ug/kg 92 83-118 <br /> Toluene N.D. 1. ug/kg 94 81-116 <br /> Ethylbenzene N.D. I. ug/kg 92 82-115 <br /> Xylene (Total) N.D. 1. ug/kg 95 82-117 <br /> Batch number: K030572AB Sample number(s) : 4001937-4001938,4001940 <br /> Methyl Tertiary Butyl Ether N.D. 1. ug/kg 84 75-125 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ. <br /> 46 The background result was more than four times the spike added. <br /> Lancaster Laboratories,Inc. <br /> M E M B IE R 2425 New Holland Pike <br /> ® PO Box 12425 <br /> � Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax:717-656-2681 2216 Rev. 1012102 <br />