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i <br /> SEQUOIA ANALYTICAL <br /> 819 Stnker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> vav{t`v riva�y�w..,y rc�yv>r n nu• x ++ Nt xs vx. x. n ...t.. x . n .. ... r n• .. <br /> ndustries Client Project ID Arco #2130, Stockton <br /> 3164 Gold Camp Dr, Suite 200 <br /> Rancho Cordova, CA 95670 <br /> Attention Jay Johnson OC Sample Group 211-0476 Reported Nov 30, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> pH Flashpoint <br /> Method EPA 9045 EPA 1010 <br /> Analyst Y Arteaga K Follett <br /> Reporting Units pH units °C <br /> Date Analyzed Nov 24 1992 Nov 24 1992 <br /> OC Sample # 211-3920 2111517 <br /> Sample Conc: 22 >100 <br /> Spike Conc. <br /> Added: N/A N/A <br /> Conc. Matrix <br /> Spike N/A N/A <br /> Matrix Spike <br /> % Recovery- N/A N/A <br /> Sample Dup : 22 >100 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery N/A N/A <br /> Relative <br /> % Difference, 00 00 <br /> ISEQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sampie x 100 <br /> Spike Conc Added <br /> RelaLve%Difference Conc of M S -Cone of M S D x 100 <br /> Michael R Giles (Conc of M S * Cone of M S D}/2 <br /> Laboratory Director <br /> 2110476 RES <6> <br />