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• J <br /> • <br /> ' la 2 <br /> Alpha Analytical Laboratories Inc. 860 Waugh Lane, H-1, Ukiah, California 95482 <br /> e-mail: clientservices@alpha-labs.com Phone: (707) 468-0401 Fax: (707) 468-P2267 <br /> Order#A99121604 1 <br /> ' December 23, 1999 <br /> Advanced Geo <br /> ' 4005 N. Wilson Way <br /> Stockton, CA 95205 <br /> Attn: Tony Mikacich <br /> ' Quality Control Report <br /> Matrix Duplicate <br /> Spike Spike <br /> ' Method Recovery Recovery RPD <br /> Blank % % % <br /> Matrix: Soil <br /> ' QC Batch: MJS 1311925 <br /> Benzene ND 102.6 104.9 2.2 <br /> Toluene ND 106.6 108.0 1.2 <br /> Ethylbenzene ND 105.4 110.5 4.7 <br /> m,p-Xylene ND 98.9 103.4 4.4 <br /> ' Methyl-t-butyl ether ND 106.3 103.9 2.3 <br /> Diisopropyl ether ND 98.3 97.6 0.7 <br /> Ethyl-t-butyl ether ND 89.3 89.1 0.2 <br /> ' Tert-amyl mehtyl ether ND 102.2 100.7 1.4 <br /> Tert-Butanol ND 99.1 100.0 0.9 <br /> 1,2-Dichloroethane ND 102.0 99.0 2.9 <br /> This batch passes method quality control acceptance criteria. � ,� <br /> CCC"' <br /> ND=none detected Bruce L.Gove, Laboratory Director <br />