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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 1 760 5-242 5•717 656 2300 Fax 717-656-2681-www lancasterlabs com <br /> Page 4 of 8 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 882770 <br /> Reported 02/12 0-4 at 06-16—PM <br /> Laboratory Compliance Quality Control <br /> Blank Hlank� Report LCS LCSD LCS/LCSD <br /> ralvein Name Result MDL Units $REC %REC Limits RPD RPD Max <br /> Batch number P040301AA Sample number(s) 4205540,4205543-4205545 <br /> Methyl Tertiary Butyl Ether N D 2 ug/l 91 77-127 <br /> Benzene N D 5 ug/l 89 85-117 <br /> Toluene N D 5 ug/1 87 85-115 <br /> -- Ethylbenzene N D 5 - ug/1 w BO- - - - - 82-119 <br /> Xylene (Total) N D 5 ug/l 88 84-120 <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name 96REC %R£C Limits RPD MAX Conc Conc RPD Max <br /> Batch number 0403OA07A Sample number(s) 4205541 - y <br /> TPH-GRO - Waters 106 106 63-154 0 30 <br /> Batch number 0403OA07C Sample number(s) 4205540 <br /> TPH-GRO - Waters 106 106 63-154 0 30 <br /> Batch number 0403OA08A Sample number(s) 4205545 <br /> TPH-GRO - Waters 102 101 63-154 0 30 <br /> Batch number 0403OA08B Sample number(s) 4205543-4205544 <br /> TPH-GRO - Waters 102 101 63-154 0 30 <br /> Batch number 04033112601A Sample number(s) 4205541 <br /> _TRPH-418 1 - N D N D ` 10 (1) 34 <br /> Batch number 040351848002 Sample number(s) 4205542 <br /> Cadmium _ _ _ 101 -- 10 3 . - 8'7__117 _-. .2___2 0T___N D ____N D -_0_(1)__ 20 _ <br /> Chromium - 101 101 86-118 0 20 N D T N D - 0 (1) -20 <br /> Lead 101 102 87-118 1 20 N D N D 0 (1) 20 <br /> Nickel - - 101 ---102 - 91-111 0- 20 _- N D N D - 0 (1) _ _ --20 <br /> Zinc 100 101 80-120 1 20 N D N D 200° (1) 20 <br /> Batch number N040331AA Sample number(s) 4205541 <br /> Ethanol 92 41-155 <br /> Methyl Tertiary Butyl Ether 100 69-134 <br /> di-Isopropyl ether 98 75-130 <br /> Ethyl t-butyl ether 96 78-119 <br /> t-Amyl methyl ether 97 77-117 <br /> t-Butyl alcohol 96 51-147 <br /> Dichlorodifluoromethane 116 57-201 <br /> Chloromethane 103 70-148 <br /> Vinyl Chloride 106 64-148 <br /> Bromomethane 92 52-140 <br /> Chloroethane 95 63-142 <br /> Trichlorofluoromethane 107 67-163 <br /> 1,1-Dichloroethene 106 78-146 <br /> Methylene Chloride 99 79-133 <br /> trans-1,2-Dichloroethene 102 82-133 <br /> 1,1-Dichloroethane 100 85-135 <br /> 2,2-Dichloropropane 102 78-134 <br /> cis-1,2-Dichloroethene 99 83-126 <br /> *-Outside of specification <br /> (l) 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 />