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Lancaster.- - - - - - Anal sis Re 6 f� <br /> Laboratories Y p � <br /> 2425 New Holland Pike PC Bax 12425 Lancaster PA 17605-2425•717-656-2300 Fax 717 656-2681•www ianCBSterlabS Coni <br /> Page 2 of 5 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 965273 <br /> Reported 11/10/05 at 03 30 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result HDL Units %REC %REC Limits RPA RPD Max <br /> 1,2-Dibromoethane N D 0 5 ug/l 96 81-114 <br /> Chloroben2ene N D 0 8 ug/1 93 85-115 <br /> 1,1,1,2-Tetrachloroethane N D 1 ug/1 93 83-114 <br /> Ethylbenzene N D 0 5 ug/1 96 82-119 <br /> m+p-Xylene N D 0 5 ug/l 94 83-113 <br /> o-Xylene N D 0 5 ug/l 94 83-113 <br /> Styrene N D 1 ug/1 93 82-111 <br /> Bromoform N D 1 ug/l 93 69-118 <br /> Iso ropylbenzene N D 1 ug/l 96 80-120 <br /> 1,1,2, 2-Tetrachloroethane N D 1 ug/1 93 72-119 <br /> Bromobenzene N D 1 ug/1 94 82-110 <br /> 1,2,3-Trichloropropane N D 1 ug/l 96 w 78-117 <br /> n-Propylbenzene N D 1 ug/1 95 78-119 <br /> 2-Chlorotoluene N D 1 ug/1 95 78-115 <br /> 1,3,5-Trimethylbenzene N D 1 ug/l 96 78-116 <br /> 4-Chlorotoluene N D 1 ug/l 96 80-112 <br /> tett-Butylbenzene N D 1 ug/1 95 74-114 <br /> 1,2,4-Trimethylbenzene N D 1 ug/1 95 78-117 <br /> sec-Butylbenzene N D 1 ug/l 94 72-120 <br /> p-Isopropyltoluene N D 1 ug/1 96 72-118 <br /> 1,3-Dichlorobenzene N D 1 ug/1 94 81-114 <br /> 1 4-Dichlorobenzene <br /> n-Butylbenzene N D 1 ug/1 93 70-116 <br /> 1,2-Dichloroben2ene N D 1 ug/l 93 81-112 <br /> 1,2-Dibromo-3-chloropropane N D 2 ug/l 97 55-127 <br /> 1,2,4-Trichlorobenzene N D 1 ug/l 97 65-114 <br /> b <br /> Hexachloroutadiene_ -�� _ N-D` `-2 —Ug/1- ---89- -- <br /> Naphthalene <br /> g/1- `89---Naphthalene N D_ _ 1 ug/1 105 - 61-116 <br /> 1,2,3-Trichlorobenzene N D- 1 - ug/l 101 - 67-114 <br /> Acetone N D 6 ug/l 181 21-226 <br /> Carbon Disulfide N ❑ 1 ug/l 91 76-136 <br /> 2-Butanone - - N D - - 3- - ug/1- 136 - - 47-171 - <br /> trans-1,3-Dzchloropropene N D 1 ug/l 93 79-114 <br /> cls-1,3-Dichloropropene N D 1 ug/1 93 78-114 <br /> 4-Methyl-2-pentanone N D 3 ug/l 94 57-133 <br /> 2-Hexanone N ❑ 3 ug/l 113 47-150 <br /> 2-Chloroethyl Vinyl Ether N D 2 ug/l 92 64-129 <br /> Freon 113 N D 2 ug/l 86 73-140 <br /> Batch number Z053052AA Sample number(s) 4635973,4635975-4635977 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 104 77-127 <br /> Benzene N D 0 5 ug/l 88 85-117 <br /> Toluene N D 0 5 ug/1 91 85-115 <br /> Ethylbenzene N D 0 5 ug/l 91 82-119 <br /> j Xylene (Total) N D - 0 5 ug/l 91_ 83-113 <br /> I <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DUP Dup RPD <br /> Analysis Name %REC kREC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 05304AOBA Sample number(s) 4635973 <br /> TPH-GRO - Waters 139 136 63-154 2 30 <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 />