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1 <br /> I <br /> Alpha Analytical Laboratories Inc 860 Waugh Lane, H-1, Ukiah, California 95482 <br /> Order#A01010405 e-mail chentserv►ces@alpha-labs com • Phone (707) 468-0401 Fax (707) 468-N8w 1 <br /> IJanuary 19, 2001 y <br /> Advanced Geo Environmental <br /> I 4005 N Wilson Way <br /> Stockton, CA 95205 <br /> Quality Control Report <br /> I - <br /> Matrw Duplicate <br /> Spike Spike <br /> Method Recovery Recovery RPD <br /> Matrix- Aqueous Blank % % % <br /> I QC Batch MJS14-2130 <br /> Benzene ND 905 84 8 6 5 <br /> Toluene ND 976 932 4 6 <br /> I. Ethylbenzene ND 1003 95 4 5 0 <br /> m,p-Xylene ND 974 91 8 6 0 <br /> Methyl-t-butyl ether ND 81 7 81 6 01 <br /> Dnsopropyl ether ND 1128 1085 3 9 <br /> Ethyl-t-butyl ether ND 1100 1081 1 8 <br /> Tert-amyl mehtyl ether ND 966 949 1 7 <br /> Tert-Butanol ND 71 3 783 9 3 <br /> 1,2-D{chloroethane ND 895 84 7 5 5 <br /> 1,2-Dibromoethane ND 91 3 926 1 5 <br /> I <br /> I <br /> i0 <br /> This batch passes method quality control acceptance criteria <br /> Aa 4 tY <br /> IND=none detected Bruce L Gove,Laboratory Director <br />