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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415).364--9233- <br /> Client-Project <br /> 415) 364=9233Client-Project ID.861Q2-08,Station 492 <br /> `42501 Albrae Street, Suite 100 _ <br /> Fremont, CA 94538 <br /> .'Attention: Anthony Eneno QC Sample Group 2030433-36 ' Reported: Mar 18, 1992 � <br /> QUALITY-CONTROL DATA REPORT <br /> ANALYTE <br /> Chloro- <br /> 1,1-Dichloroethene. Trichloroethene benzene <br /> Method: EPA 8010 EPA 8010 EPA 8010 <br /> Analyst: V.Nunzir V. Nunzir V.Nunzir <br /> j Reporting Units: us/L us/L <br /> Date Analyzed: Mar 11,.1992 Mar 11, 1992 Mar 11, 1992 <br /> OC Sample#: BLK031.192 BLX031192 BLK031192 <br /> Sample Conc.: N.D. N;D. N.D. <br /> LJSpike Cone. <br /> Added: 25' 25 25 <br /> Conc. Matrix <br /> Spike: 21 24 21 <br /> Matrix Spike <br /> % Recovery:-. 84 96. 84- <br /> Cone.-Matrix <br /> Spike Dup.: 20 26 24 <br /> Matrix Spike- <br /> Duplicate <br /> %Recovery: 80 104 96 <br /> * Relative - <br /> .A %Difference:_ 4.9 . 8.0 13 <br /> SI=QUOIA ANALYTICAL %Recovery: Conc,of M.S.-Conc.of Sample x 100 - <br /> Spike Conc.Added <br /> U�V/�Vnl Relative%-Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> L e (Conc.of M.S:+ Conc.of M_ .S.D.) 2 <br /> '` <br /> JPojecct Manager 2030433.ENs <s> <br />