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SEQUOIA ANALYTICAL <br /> S .0 Chesapeake Carve • Redwood City,CA 94063 <br /> (415)364.9600 - FAX(415)364-9233 <br /> �Waterwak pient Project ID fif376 ��� <br /> 1710 Main Street <br /> '"_ Escalon,CA 95320 <br /> �Attentlon Tina Le Pae QC Sample Grow 108430&10 R 27. 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene X enes <br /> Method EPA 80120 EPA 8020 EPA 8020 EPA SM <br /> Analyst. L Lmkhtmen L Li ulftTiai L L.ankhtma n L.Wkhtnm <br /> Reporting Unds- PGA pxi/t. P9/L WX <br /> Date Analyzed Aug 2% 1991 Aug 2% 1991 Aug 23, 1991 Arg 23, 1991 <br /> QC Sample# GBL.1C082891 GBLXD82391 GBUM82MI GBLK0=91 <br /> Sample Conc.: N D N D N D N D <br /> Spike Conc. <br /> Added: 10 10 10 30 <br /> Cone.Matrix <br /> Spike: 11 11 10 32 <br /> Matrix Spike <br /> %RecoFery: 110 110 100 110 <br /> Conc Matrix <br /> Spice Dup.: 11 11 10 32 <br /> Matrix Spike <br /> Duplicate <br /> •Recovery: 110 110 104 110 <br /> Relative <br /> •Difference: 00 0 0 00 00 <br /> SEQUOIA ANALYTICAL %Rsoovary- Cono of M S Cone of Simple x 100 <br /> Spike Conc Added <br /> P41&W*%Dafhrence Conc of M S -Cane of M&D x 10D <br /> . P EI beth W HacId Conc of M S t Cone of M S D 2 <br /> oject Manager 1084308 WA7 c2> <br />