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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 Sacramento, CA 15134 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> Raney 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, 1.992 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel <br /> EPA <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 8015 Mod. <br /> Analyst: C.Chapman C Chapman C. Chapman C Chapman M Giles <br /> Reporting Units: ppm Ppm PNM PPM ppm <br /> Date Analyzed: Apr 10, 1992 Apr 10. 1992 Apr 10 1992 Apr 10, 1992 Apr 14, 1992 <br /> CC Sample #: BLK041092 BLK041092 BLK041092 BLK041092 BLK041392 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Spike Conc. <br /> ( Added: 0.2 0.2 0.2 0.4 15 <br /> Conc. Matrix <br /> Spike: 0.16 0.16 016 0.34 12 <br /> R <br /> Matrix Spike <br /> % Recovery: 80 80 80 85 80 <br /> f <br /> Conc. Matrix <br /> f Spike Dup.: 0.16 0.16 0.16 0.34 13 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 80 80 80 85 87 <br /> L <br /> Relative <br /> % Difference: 0.0 0.0 0.0 0.0 8 <br /> SEQUOIA ANALYTICAL Recovery: Conc.of US, -Conc of Sample x 100 <br /> . Spike Conc. Added <br /> Z 4 <br /> L L Retative 95 Difference. Conc.of fy1.S -Conc of M.S.O. x 100 <br /> Michael R. Giles (Conc.of M.S. r Conc.of M.S.D.) /2 <br /> Laboratory Director <br /> 2040080.RRR <26> <br /> i <br />