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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City,CA 94063 <br /> ' (415) 364-9600 - FAX(415)364-9233 <br /> r <br /> .. ,:..:::kms.,.,:»•,:::.. ,:,.•>i>�...>,,.:. •. <br /> :•1 tQ' : : v <br /> a (work Client Project ID. #60147-1, Stephens Marine <br /> 1710 Main Street <br /> Escalon,CA 95320 <br /> Attention: Sail Channeii OC Sample Group: 0074323-0074326 Reported: Jul 17, 1990 <br /> ^Y{.r\t+i:..i.0 .r.•'.'v. .}1.. .:{. ::S?y". s.yl., i,?•,.y,•.:.y,+,-:; <br /> ':•m,: r .: :., - ... » ;::..,;:,.: .:. »:.::v.3.s :...... :?�«>?:E ...;Lr ............ .........:::tea....::>x; <br /> ...,.:.:.v......}}:Ns...:nv.v:.:.:... :w.:..fi...:::n>}x...R:C}::.:,.r:::Rc}s5:r..r.s.: .' .- ?'-srri )fi.. ,.n:.•::i.:. <br /> QUALITY CONTROL DATA REPORT <br /> Benzene Toluene EM44 Xylenes Qleael <br /> Benzene <br /> EPA EPA EPA EPA <br /> Method: 5030/8020 5030/8020 5030/8020 5030/8020 EPA 8016 <br /> Analyst: G.Emory G.Emory G.Emory G.Emory S.Kouri <br /> Reporting Units: rig/l. Ifg/L yg/L vg/L NO/l. <br /> Date Analyzed: Wag 8, 1990 Aug 6, 1990 Aug 6, 1990 Aug 8, 1990 Aug 16, 1590 <br /> QC Sample#: 007-0541 007-0541 007-0541 007.0541 Matrix <br /> Sample Cone.: N.D. anN.D. N.D. N.D. <br /> Spike Cone. <br /> Added: 5.0 5.0 5.0 15 11,000 <br /> Cone.Matrix <br /> Spike: 4.8 5.4 5.4 16 6,600 <br /> Matrix Spike <br /> %Recovery: 96 98 110 100 60 <br /> Cone.Matrix <br /> Spike Dup.: 4.8 5.4 5.4 16 6,100 <br /> 3 <br /> Matrix Spike ' <br /> Duplicate <br /> %Recovery: 96 98 110 100 6.0 <br /> Relative <br /> %Difference: 0.0 0.0 0.0 0.0 7.9 <br /> SAW IA ANALYTI AL % very: Cone.of M.5.-Conc.of Sample x 100 <br /> Spike Conn.Added <br /> lativo 9G Difference: Conc.of M.S.-Canc.of M.S.D. x 100 <br /> beth W. Ha.kl (Conc.of M.S. + Conc.of M.S.O.)/2 <br /> iPr ject Manager 74323.wAT <3> <br />