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{ O • • <br /> Lancaster Laboratories page 4 of 6 <br /> Where qualrty is a scrence <br /> Quality Control Summary <br /> Client Name Chevron Products Company Group Number 797430 <br /> Reported 03/04/02 at 04 .09 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP DuP <br /> RFD <br /> Analysis Name %REC %RBC Limits RPD MAX Conc Cono RPD Max <br /> Trichlorofluoromethane 112 119 58-157 6 30 <br /> 1,1-Dichloroethene 118 119 75-152 2 30 <br /> Methylene Chloride 107 107 81-134 0 30 <br /> trans-1,2-Dichloroethene 111 112 78-140 0 30 <br /> 1,1-Dichloroethane 108 107 77-142 1 30 <br /> cis-1,2-Dlchloroethene 108 106 79-133 2 30 <br /> Chloroform 105 104 76-138 1 30 <br /> 1,1,1-Trichloroethane 108 106 78-141 1 30 <br /> Carbon Tetrachloride 100 102 75-149 2 30 <br /> 1,2-Da.chloroethane 105 103 75-141 2 30 <br /> Trichloroethene 107 107 82-133 1 30 <br /> 1,2-Dichloropropane 103 102 82-126 1 30 <br /> Bromodichloromethane 94 93 81-127 1 30 <br /> 1,1,2-Trichloroethane 100 98 82-127 2 30 <br /> Tetrachloroethene 118 116 81-14B 2 30 <br /> Dibromochloromethane 85 85 74-125 1 30 <br /> Chlorobenzene 105 103 81-125 2 30 <br /> Bromoform 80 79 62-127 1 30 <br /> 1,1,2,2-Tetrachloroethane 96 94 69-121 2 30 <br /> 1,3-Dichlorobenzene 107 105 82-128 2 30 <br /> 1,4-Dichlorobenzene 103 101 81-122 1 30 <br /> ,2-Dichlorobenzene 101 100 82-125 1 30 <br /> trans-l,3-Dichloropropene 96 94 70-120 1 30 <br /> cis-1,3-Dichloropropene 101 99 70-123 2 30 <br /> Freon 113 121 123 76-157 2 30 <br /> Batch number P020511AE Sample number(s) 3775768 <br /> Methyl t-butyl ether 104 103 69-134 1 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 02051A55 <br /> Trifluorotoluene-F Trifluorotoluene-P <br /> 3775767 91 87 <br /> 3775768 90 84 <br /> 3775770 90 90 <br /> 3775771 175* 110 <br /> Blank 91 87 <br /> LCS 99 87 <br /> LCSD 98 87 <br /> MS 101 87 <br /> MSD 86 <br /> Limits 67-135 71-130 <br /> Analysers Name TCL SW846 Semivolatales/Waters <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 /> M E M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> A Lancaster PA 17605 2425 <br /> 717 656 2300 fax 717 656 2681 2.216 Rev 9/11/00 <br />