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j SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (918) 921.9600 • FAX (916) 921-0100 <br /> 49 ,AE$ Cy rolect D. a#216f3, Stockton <br /> 3164 Gold Camp Dr, Suite 200 <br /> Rancho Cordova,CA 9567f) <br /> Attention: David Stavarek 0C Sample Group. 301-0309 Reported: Jan 20, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Benzene Toluene Ethylbenzone Xylenes STLC Lead <br /> Method ZPA W= EPA 3020 EPA 802x1 EPA SM EPA 5010 <br /> Analyst Chiaravalloti Chiaravalloti Chiaravallob Chiaravalloti V Owens <br /> Reporting Units mg/kg mg/kg mg/kg mg/kg mg/L <br /> Date Analyzed Jan 14. 1993 Jan 14, 1993 Jan 14, 1993 .Jan 14, 1993 Jan 19, 1993 <br /> QC Sample# BLK011493 OLK011493 BLK011493 BLK011493 301-0309 <br /> Sample Cone.: N D N D N D N D 018 <br /> Spike Cone. <br /> Added: 020 020 020 040 20 <br /> Cone. Matrix <br /> Spike: 018 018 018 038 20 <br /> Matrix Spike <br /> %Recovery: 90 90 90 95 91 <br /> Cone. Matrix <br /> Spike Dup.: 018 017 013 0 38 20 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 90 85 90 95 91 <br /> Relative <br /> % Difference: 00 57 00 00 00 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> SEOUOIA ANALYTICAL �Reooverr Cone of M . of pie x 100 <br /> Gft Cone Added <br /> Reiative%Difference Cone of M.S.-Corte of KS D x 100 <br /> Michael R. Gass ( rrc of M + rrc of M D 2 <br /> Laboratory Director 3010009 FEES <5a <br />