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MS = Matrix Spike <br />AR Acceptable Range <br />MSD = Matrix Spike Duplicate Matrix = Laboratory Blank Water <br />RPD = Relative Percent Difference MAV = Maximum Acceptable Value <br />5 ENVIRON1 .ENTAL <br />ANALYTICAL CHEMISTS <br />June 1, 1993 <br />San Joaquin County Health Dept <br />P.O. Box 2009 <br />Stockton , CA 95201 <br />E1 . tit; <br />H 93 JtV4 -4 pm <br />QA/QC ID# 930529 502.2-301A 1:40 <br />RE: Organic Analysis <br />Extracted: N/A <br />Analyzed : May 29, 1993 <br />FGL Environmental Quality Assurance Report <br />EPA METHOD 502.2 <br />CONSTITUENT <br />CONC. <br />SPIKED <br />ug/L MS <br />ACCURACY <br />% RECOVERED <br />MSD AR <br />PRECISION <br />% DIFFERENCE <br />RPD MAV <br />Chlorobenzene 0.0 84 97 37-160 14.0 30.0 <br />1,3-Dichlorobenzene 0.0 100 106 50-150 6.0 30.0 <br />1,4-Dichlorobenzene 0.0 110 106 50-150 4.0 30.0 <br />1,2-Dichloroethane 0.0 129 119 49-155 10.0 30.0 <br />trans-1,2-Dichloroethylene 0.0 89 108 54-156 19.0 30.0 <br />1,2-Dichloropropane 0.0 115 115 D-210 0.0 30.0 <br />Ethyl Benzene 0.0 104 89 37-162 15.0 30.0 <br />Tetrachloroethylene 0.0 96 104 64-148 8.0 30.0 <br />1,1,2-Trichloroethane 0.0 100 99 52-150 1.0 30.0 <br />FGL ENVIRONMENTAL <br />7;410 •Pt.e' 2 <br />Thomas Bartanen, M.S. <br />Quality Assurance Officer <br />Corporate Offices & Laboratory <br />P.O. Box 272 / 853 Corporation Street <br />Santa Paula, CA 93061-0272 <br />TEL: (805) 659-0910 <br />FAX: (805) 525-4172 <br />Office & Laboratory <br />2500 Stagecoach Road <br />Stockton, CA 95215 <br />TEL: (209) 942-0181 <br />FAX: (209) 942-0423 <br />Field Office <br />Visalia, California <br />TEL: (209) 734-9473 <br />Mobile: (209) 738-6273