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1 <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> IWO (916) 921.9600 FAX (916) 921-0100 <br /> tRaney Geotechnical Client Project 10: #074-013, UPS - North Broadway <br /> ?3176 Industrial Blvd. <br /> :.'West Sacramento, CA 95691 <br /> Attention: Mike Gereghty OC Sample Group: 2040080-90 Reported: Apr 17, 1992 <br />' QUALITY CONTROL DATA REPORT <br /> ANA�.YTE <br /> Antimony Barium Beryllium Cadmium Chromium Cobalt Co per <br />' Method: EPA e010 EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Analyst: S. Foster S.Foster S. Foster S. Foster S. Foster S. Foster S. Foster <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/k9 <br /> Date Analyzed: Apr 7. 1992 Apr 7. 1992 Apr 7. 1992 Apr 7. 1992 Apr 7. 1992 Apr 7, 1992 Apr 7, 1992 <br /> QC Sample #: 204-0090 204.0090 204-0090 204-0090 204-0090 204-0094 204-0090 <br />' Sample Cone.: N.D, 180 4,7 2.5 45 12 38 <br /> Spike Cone. <br /> Added: 50 50 50 50 50 50 50 <br /> Cone. Matrix <br />' Spike: 46 220 50 45 89 <br /> 57 83 <br /> Matrix Spike <br /> % Recovery: 92 80 91 85 88 90 90 <br /> 1 Cone. Matrix <br /> Spike yup.: 48 220 51 46 88 59 85 <br /> Matrix Spike <br /> Duplicate <br />' % Recovery: 96 80 93 87 86 94 94 <br /> Relative <br /> % Difference: 4.3 0.0 2-0 2.2 1.1 3.5 2.4 <br /> SEQUOIA ANALYTICAL <br /> ,a <br /> o Recovery: Conc.of M.S.•Conc,of Sample x 100 <br /> Sp*e Conc. Added <br /> Reiative 46 Difference: Conc. of M S, -Conc.of M.S.Q. x <br /> 100 <br /> Michael R. Giles (Conc of M.S. + Conc.of M S.D.)/2 <br />' Laboratory Director Pa E� 1 of 3 <br /> 2440080.RRR <2$> <br />