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i <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> Raney Geotechnical Client Project ID: #074-013, UPS - North Broadway <br /> 3176 Industrial Blvd. <br /> West Sacramento, CA 95691 <br /> Attention: Mike Gereghty QC Sample Group: 2040080.90 Reported: Apr 17, 1992 <br />' QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Molybdenum Nickel Silver Thallium Vanadium Zinc Arsenic <br /> Method: EPA 6010 EPA 6010 EPA 5010 EPA 7841 EPA 6010 EPA 6010 EPA 7060 <br /> Analyst: S. Faster 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/kg <br /> Date Analyzed: Apr 7, 1992 Apr 7, 1992 Apr 8 1992 Apr 7, 1992 Apr 7, 1992 Apr 7, 1992 Apr 7, 1992 <br /> QC Sample #: 204-0090 204-0090 204-0090 204-0050 204-0090 204-0090 204-0090 <br />' Sample Conc.: 37 43 N.D. N.D, 59 53 N.D. <br /> Spike Conc. <br /> Added: 50 50 50 25 50 50 25 <br />' Conc. Matrix <br /> Spike: 78 85 55 21 102 98 20 <br /> Matrix Spike <br /> % Recovery: 82 84 110 84 86 90 80 <br />' Conc. Matrix <br /> Spike Dup.: 79 86 55 23 104 100 20 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 84 86 110 92 90 94 80 <br /> Relative <br /> % Ditierence: 1.3 1.2 0.0 9.1 1.9 2.0 0.0 <br /> SEQUOIA ANALYTICAL o Recovery; Conc of M S. -Conc. of Sample x 100 <br /> fn• � � ��; �J f � Spike Conc.Added <br /> Relative o C;fference: Conc.of M.S. -Conc.of M.S.D. x 100 <br /> Michael R. Giles (Conc.of M.S. Conc.of M S.D.) /2 <br /> ' Laboratory Director Page 2 of 3 <br /> 2040080.RRR <29> <br />