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Analysis • • <br /> k <br /> Lancaster Laboratories <br /> Where quality is a science <br /> Page 4 of 7 <br /> Quality Control Summary <br /> —Client_Name. ChevronTexaco _ _ Group Number 828908 <br /> Reported 11/13/02 at 01 47 PM <br />_ Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP DUP <br /> RPD <br /> Analvain Name %RRC %RRC Limite RPD MAX Colic Cone RPD Max <br /> Batch number 02305A55A Sample number(s) 3930709-3930710,3930712-3930714 <br /> TPH-GRO - Watera _ 104 74-132 <br /> Batch number 02308112601A Sample number(s) 3930710 <br /> TRPH 418 1 0 36 N D 66* (1) 34 <br /> Batch number 023081848002 Sample number(s) 3930711 <br /> Cadmium 106 104 78-121 2 20 N D N D 0 (1) 20 <br /> Chromium 107 103 80-119 3 20 0 0088 0 0089 1 (1) 20 <br /> Lead 108 105 75-125 3 20 N D N D 0 (1) 20 <br /> Nickel 105 102 80-117 3 20 0 0031 0 0044 35* (1) 20 <br /> Zinc 108 106 81-120 2 20 0 0090 0 0055 49* (1) 20 <br /> Batch number H023082AA Sample number(s) 3930709-3930710,3930712,3930714 <br /> Ethanol 92 106 34-163 14 30 <br /> Methyl t-butyl ether 97 99 69-134 2 30 <br /> di-Isopropyl ether 91 94 68-133 3 30 <br /> Ethyl t-butyl ether 87 89 73-123 2 30 • <br /> t-Amyl methyl ether 92 92 69-118 1 30 <br /> t-Butyl alcohol 100 102 51-148 3 30 <br /> Dichlorodifluoromethane 116 126 33-156 8 30 <br /> Chloromethane 97 105 47-139 8 30 <br /> vinyl Chloride 101 110 54-144 9 30 <br /> Bromomethane 79 83 42-134 4 30 <br /> Chloroethane 94 95 55-129 1 30 <br /> Trichlorofluorometha_n_e_ 114__123_ _70=154— _7 _ 30 <br /> 1,1-D3.chloroethene T 111 115� 69-151 3 30 - T <br /> Methylene Chloride 102 105 80-126 3 30 <br /> _ _trans-l,2-Dachloroethene _107_ _110 _ 82=133 3 30 <br /> 1,1-Dachloroethane 107 108 79-135 1 30 <br /> 2,2-Dichloropropane 104 106 78-134 2 30 <br /> cis-1,2-Dichloroethene --r 103 - -105,— 83-126- 3 - 30 - - <br /> Chloroform 110 110 77-133 0 30 <br /> Bromochloromethane 93 103 60-140 10 30 <br /> 1,1,1-Trichloroethane 108 112 82-135 3 30 <br /> Carbon-Tetrachloride 104-105-73-144 2 30 <br /> 1,1-❑achloropropene 107 108 80-132 1 30 <br /> Benzene 110 111 78-134 1 30 <br /> 1,2-Dachloroethane 105 105 73-136 1 30 <br /> Trichloroethene 105 104 75-135 1 30 <br /> 1,2-Dichloropropane 100 102 81-121 1 30 <br /> Dibromomethane 103 106 83-120 2 30 <br /> Bromodichloromethane 104 104 81-127 0 30 <br /> Toluene 111 111 83-127 0 30 <br /> 1,1,2-Trichloroethane 105 103 82-127 2 30 <br /> Tetrachloroethene 113 112 74-149 1 30 <br /> 1,3-Dichloropropane 108 107 77-126 1 30 <br /> Dabromochloromethane 95 93 73-119 1 30 <br /> 1,2-Dibromoethane 100 99 78-120 0 30 <br /> Chlorobenzene 103 102 81-125 1 30 <br /> 1,1,1,2-Tetrachloroethane 98 98 82-125 0 30 <br /> Ethylbenzene 112 110 82-134 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 /> Lancaster Laboratories,Inc <br /> M E M S I'- R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605-2425 <br /> 717-656-2300 Fax 717-656-2681 2216 Rev 9/11/00 <br />