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*RECEIVE <br />€NVIR©NMENTAL HEALTH <br />PERMIT/SERVICES <br />October 15, 1992 QA/QC ID# 921006 UGSTA-L-301A <br />San Joaquin County D.A. RE: Organic Analysis <br />District Attorney Office <br />P.O. Box 990 Extracted: October 6, 1992 <br />Stockton CA 95201 Analyzed : October 6, 1992 <br />FGL Environmental Quality Assurance Report <br />UGSTA-L METHOD <br />CONC. ACCURACY PRECISION <br />SPIKED % RECOVERED % DIFFERENCE <br />CONSTITUENT ug/L MS MSD AR RPD MAV <br />Ethyl Benzene 602 5.0 107 95 75-129 12.0 20.0 <br />MS = Matrix Spike MSD = Matrix Spike Duplicate Matrix = Laboratory Blank Water <br />AR = Acceptable Range RPD = Relative Percent Difference MAV = Maximu Acceptable Value <br />FGL ENVIRONMENTAL <br />Iu <br />omas Bar anen,M.ality Assurance ficer <br />";vk.• �' -.-... IN ...T>;.: 'bX "..-i'r. K.' ..^..;' �Yjtc" 4JkK - .. IM`do-a.. ,F.ri 'is�i= <br />