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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 - Sacramento, CA 95834 <br /> (916) 921-9600 - FAX (916) 921-0100 <br /> ry -.^ #.Sr`�w�j.x. t., ,F;v+r c• L �',.e- �aP y.S r. o�+M <br /> RESNA Industries �, "."�".. <br /> Client Project ID A�rco#2168, Stockton <br /> 3164 Gold Camp Dr, Suite 200 <br /> Rancho Cordova, CA 95670 <br /> Attention Eloise Cherven QC Sample Group 2050268-70 Reported May 26. 1992 <br /> x n,. k ii a v u. t J�cvtis Y, n V m. . r n n ry n S vv ,..v. J v 4 • , n. • a rc ' 1} <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Tnchloroethene Chlorobenzene <br /> Method EPA 8010 EPA 8010 <br /> Analyst M Nguyen M Nguyen <br /> Reporting Units Ng/i- Ng/L <br /> Date Analyzed May 13, 1992 May 13, 1992 <br /> QC Sample# BLKM1392 BLKW1392 <br /> MS/MSD MS/MSD <br /> Sample Conc. N D N D <br /> Spike Conc. <br /> Added: 10 10 <br /> Conc. Matrix <br /> Spike: 11 94 <br /> Mab uc Spike <br /> % Recovery 110 94 <br /> I <br /> Conc. Matrix <br /> Spike Dup.: 10 95 <br /> Mati nc Spike <br /> Duplicate <br /> % Recovery- 100 95 <br /> Relative <br /> % Difference: 95 10 <br /> Duality Assurance Statement All standard operating procedures and qualrty control requirements Have been met <br /> SEQUOIA ANAL YTi AL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Reiatnre%Merence Conc of M S -Cone of M S D x 100 <br /> Michael R Giles (Conc of MS +Conc of MSO)/2-- <br /> Laboratory <br /> SD) 2Laboratory Director <br /> 2050258 RES <8> <br />