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Lancaster Laboratories Page 3 of 5 <br /> Wherd1ygjjyq-,eg iq,e.tol Summary <br /> Client—Name-: Chevron Products Company Group Number 793119 <br /> Reported- 01/22/02 at 09 18 PM <br /> Sample Matrix Quality Control <br /> ms _ MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC %REC Limits RPD MAX Cone Cone RPD Max <br /> Batch number V020141AB Sample number(s) 3757243-3757244 <br /> Ethanol 87 75 70-130 15 30 <br /> Methyl t-butyl ether 123 126 69-134 2 30 <br /> di-Isopropyl ether 1105-- 107 68-133 1 - 30 - <br /> Ethyl t-butyl ether 115 115 73-123 0 30 <br /> t-Amyl methyl ether 118 123* 69-118 4 30 <br /> t-Butyl alcohol 128 125 51-148 2 30 <br /> 1,2-Dichloroethane 136* 141* 77-132 3 30 <br /> 1,2-Dibromoethane 105 105 78-120 1 30 <br /> Batch number V020141AC Sample number(s) - 3757245 <br /> Ethanol 87 75 70-130 15 30 <br /> Methyl t-butyl ether 123 126 69-134 2 30 <br /> di-Isopropyl ether 105 107 68-133 1 30 <br /> Ethyl t-butyl ether 115 115 73-123 0 30 <br /> t-Amyl methyl ether 118 123* 69-118 4 30 <br /> t-Butyl alcohol 128 125 51-148 2 30 <br /> 1,2-Dichloroethane 136* 141* 77-132 3 30 <br /> 1,2-Dibromoethane 105 105 78-120 1 30 <br /> Surrogate Quality Control <br /> Analysis Name Methanol and Ethanol <br /> Batch number 02014002BA <br /> Acetone <br /> 3757243 110 - <br /> 3757244 111 <br /> 3757245 106 <br /> Blank 109 <br /> LCS 108 <br /> MS 109 <br /> MSD 106 <br /> Limits 72-128 <br /> Analysis Name TPH-GRO - waters <br /> Batch number 02014A55 <br /> - Trifluorotoluene-F Trifluorotoluene-P <br /> 3757239 96 84 <br /> 3757240 99 88 <br /> Blank 101 86 <br /> J0-6 -- _ __ __ _ 86 <br /> LCSD 110 85 <br /> MS 107 87 <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 IE M B E R 2425 New Holland Pike <br /> PO Sox 12425 <br /> Lancaster PA 17605 2425 <br /> 717-656-2300 Fax 717-656-2681 2216 Rev 9111/00 <br />