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-An4] { • <br /> Lancaster Laboratories Page 3 of 7 <br /> • Where quality is a science <br /> Quality Control Summary <br /> Client Name- ChevronTexaco Group Number 820390 <br /> Reported 09/10/02 at 03 59 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC $RSC Limita RPD RPD N <br /> Chlorobenzene N D 8 u971— 100 85-115 <br /> Bthylbenzene N D 5 u9/1 101 82-119 <br /> m+p-Xylene N D 5 ug/l 103 84-120 <br /> 0-Xylene N D 5 ug/l 103 84-120 <br /> Bromoform N D 1 ug/l 86 63-122 <br /> 1,1,2,2-Tetrachloroethane N D 1 ug/1 98 72-119 <br /> 1,3-Dichlorobenzene N D 1 ug/l 104 82-119 <br /> 1,4-Dichlorobenzene N D 1 ug/1 101 84-116 <br /> 1,2-Dichlorobenzene N D 1 u9/1 101 84-117 <br /> trans-1,3-Dichloropropene N D 1 ug/l 94 72-116 <br /> cis-1,3-Dichloropropene N D 1 ug/l 93 78-114 <br /> Freon 113 N D 2 ug/1 109 78-139 <br /> Sample Matrix Quality Control <br /> Ms MSD NS/MSD RPD BKG DUP DVP Dup <br /> RPD <br /> Analysis Name %RSC $RHC Limits RPD MAX Conc Conc RPD Max <br /> Batch number 02240112601A Sample number(s) 3886115 <br /> TRPH 418 1 0 63 0 B5 29 (1) 34 <br /> Batch number 02240A51A Sample number(s) 3886114 <br /> TPH-GRO - Waters 126 74-132 <br /> *tch number 02240ASIB Sample number(s) 3886115,3886117-3886116 <br /> PH-GRO - Waters 126 74-132 <br /> Batch number 02240WAF026 Sample number(s) 3886115 <br /> Aniline 46 49 37-104 7 30 <br /> 4-Chloroaniline 40 44 1-122 9 30 <br /> Dibenzofuran 80 82 74-109 2 30 <br /> 2-Methylnaphthalene 74 74 42-126 1 30 <br /> 2-Nitroanil;ne 94 97 48-149 4 30 <br /> 3-N3troaniline 47 50 1-128 6 30 <br /> 4-Nitroaniline 86 89 34-135 3 30 <br /> 2,4,5-Trichlorophenol 87 B9 53-134 3 30 <br /> 2-Chlorophenol 88 92 35-143 4 30 <br /> Phenol 51 53 13-75 4 30 <br /> 2-Nitrophenol 87 89 41-148 3 30 <br /> 2,4-Dimethylphenol 77 80 27-126 3 30 <br /> 2,4-Dichlorophenol 84 87 40-144 3 30 <br /> 4-Chloro-3-methylphenol 89 91 28-152 3 30 <br /> 2,4,6-Trichlorophenol 85 89 40-144 5 30 <br /> 2,4-Dinitrophenol 77 83 20-152 7 30 <br /> 4-Nxtrophenol 50 52 10-102 3 30 <br /> 4,6-Dinitro-2-methylphenol 89 93 9-163 4 30 <br /> Pentachlorophenol 65 68 3-150 5 30 <br /> N-Nitrosodimethylamine 67 69 30-100 3 30 <br /> bis(2-Chloroethyl)ether 83 85 43-145 2 30 <br /> 1,3-Dichlorobenzene 66 68 39-114 3 30 <br /> 1,4-Dichlorobenzene 66 68 44-104 3 30 <br /> 1,2-Dichlorobenzene 69 71 50-106 3 30 <br /> bis(2-Chloroisopropyl)ether 98 100 68-148 2 30 <br /> Hexaehloroethane 61 63 25-110 3 30 <br /> N-Nitroso-di-n-propylamine 84 87 38-138 3 30 <br /> Nitrobenzene 82 83 30-153 2 30 <br /> Isophorone 84 86 40-141 3 30 <br /> *-Outside of specification <br /> The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br /> Lancaster Laboratories Inc <br /> i <br /> M P— M 6 E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605 2425 <br /> 717 656 2300 Fax 717 656 2681 2216 Rev 9/11100 <br />