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Analysis 1 • h�Lancaster Laboratories Page)3 of 7l IS WhEQffl#b#tP&aS6!�Wo3. Summary Client Name Chevron Products Company Group Number 796350 Reported 03/22/02 at 10 10 AM Sample Matrix Quality Control MS MSD MS/MSA RPD BRd DUP DUP DUP RPD Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max Batch number 020460015A Sample number(s) 3771553-3771563 Ethanol (by Direct Infection) 88 88 60-140 0 20 Methanol (by Direct In3ectxon) 88 88 60-140 0 20 Batch number D020311AD Sample number(s) 3771527-3771541 Methyl t-butyl ether (2) (2) 52-150 8 30 di-Isopropyl ether 83 91 57-139 9 30 Ethyl t-butyl ether 89 100 53-148 12 30 t-Amyl methyl ether 78 99 52-144 10 30 t-Butyl alcohol 83 91 17-199 6 30 1,2-Dichloroethane 91 99 59-144 8 30 1,2-Dxbromoethane 89 96 45-140 8 30 Batch number D020421AB Sample number(s) 3771542-3771560 Methyl t-butyl ether 100 99 52-150 2 30 di-Isopropyl ether 98 99 57-139 0 30 Ethyl t-butyl ether 95 98 53-148 3 30 t-Amyl methyl ether 95 97 52-144 2 30 t-Butyl alcohol 95 90 17-199 5 30 1,2-Dichloroethane 102 102 59-144 1 30 Dibromoethane 96 95 45-140 1 30 ch number D020431AA Sample number(s) 3771561-3771563 Methyl t-butyl ether 95 95 52-150 0 30 di-Isopropyl ether 95 95 57-139 1 30 Ethyl t-butyl ether 95 96 53-148 0 30 t-Amyl methyl ether 96 96 52-144 0 30 t-Butyl alcohol 93 89 17-199 5 30 1,2-Dichloroethane 103 99 59-144 3 30 1,2-Dxbromoethane 98 95 45-140 3 30 Surrogate Quality Control Analysis Name TPH-GRO - Soils Batch number 02032A31 Trxfluorotoluene-F Trifluorotoluene-P 3771540 68 90 3771541 73 92 3771542 76 99 3771543 68 89 3771544 71 94 3771545 68 89 3771546 66 88 3771547 69 88 *-Outside of specification (1) The result for one or both deternunathons was less than five tunes the LOQ The background result was more than four times the spike added Lancaster Lahoratones Inc M E M B E R 2415 New Holland Pike ® PO Box 12425 Lancaster PA 17605 2425 717.656-2300 fax 717 656 2681 2216 Rev 9/11100