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= == = _ ENVIRONMENTAL <br />' Analytical Chemists <br /> November 12, 1993 QA/QC ID# 931110 UGSTA-S-301A <br /> San Joaquin County Solid Waste RE. Organic Analysis <br /> C/O S J Co Purchasing <br /> 222 East Weber Avenue Room 675 Extracted N/A <br /> Stockton CA 95202 Analyzed November 10, 1993 <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 /> Ethyl Benzene 8020 5.0 82 80 32--160 2 5 20.0 <br /> MS = Matrix Spike MSD = Matrix Spike Duplicate Matrix = Laboratory Blank water <br /> AR = Acceptable Range RPD = Relative Percent Difference MAV = Maxinn Acceptable Value <br /> FGL ENVIRONMENTAL <br />' T omas B tanen, M.S <br /> uality Assurance Of icer <br /> 1 <br /> 1 <br /> G A7.S Z.o i f <br />' Corporate Offices & Laboratory Office & Laboratory Field Office <br /> PO Box 272 / 853 Corporation Street 2500 Stagecoach Road Visalia CA <br />