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ENVIRONMENTAL <br />*M= <br /> ANALYTICAL CHEMISTS <br /> December 28, 1992 QA/QC ID# 921223 UGSTA-S-301B <br /> Terra Environmental - RE Organic Analysis <br /> PO Box 409 <br /> Pine Grove CA 95665 Extracted December 23, 1992 <br /> Analyzed December 23, 1992 <br /> FGL Environmental Quality Assurance Report <br /> UGSTA-S METHOD <br /> CONC ACCURACY PRECISION <br /> SPIKED % RECOVERED % DIFFERENCE <br /> CONSTITUENT mg/kg MS MSD AR RPD MAV <br /> Toluene 8020 5 0 99 93 46-148 6.0 20 0 <br /> MS = Matrix Spike MSD = Matrix Spike Duplicate Matrix = Laboratory Blank water <br /> AR = Acceptable Range RPD = Relative Percent Difference MAV = Maximum Acceptable Value <br />. FGL ENVIRONMENTAL <br /> a4mi zj-�, 11. <br /> omas B anen, M <br /> uality Assurance ficer <br /> • <br /> CoroorateOffimj a I aberatery Office& Laboratory FjiSjo gAiSS <br /> P Q Box 2721853 Corporation Street 2500 Stagecoach Road Visalia Caldorrn'a <br /> Santa Paula GA 93061 0272 Stockton CA 95215 TEL (209)734 9473 <br />