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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Dnve • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX(415) 364-9233 <br /> Waterworlc Client Project ID: W0367. lGng Island Resort/Stoddon <br /> 1710 Main Street <br /> Escalon ::: I <br /> .CA 95320 <br /> Alteration: Tina LePage GIC Sam a Group*• 204-3281 Reported-.-- <br /> 19MISMSM <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Eftyf- <br /> Benzene Toluene Benzene Xylenes <br /> Me#iod: EPA 80W EPA 802D EPA 8020 EPA e02a <br /> Analyst ECunansn E.Cunanan ECunanan ECunanan <br /> Reporting Units: P9/L Pg/L N9/L P9/L <br /> Date Analyzed- Apr 22. 1992 Apr 21. 1992 Apr 21, 1992 Apr 21, 1992 <br /> QC Sample#: GBLK042292 GBLK042292 GBLK042292 GBLK042292 <br /> Sample Conc: N.D. N.D N D. N D. <br /> 0 Spike Conc. <br /> Added: 10 10 10 30 <br /> Conc. Matrix <br /> Spike: 92 9 4 9 3 30 <br /> Matrix Spike <br /> %Recovery: 92 94 93 100 <br /> Conc.Matrix <br /> Spike Dup.: 10 10 9.9 30 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 100 99 100 <br /> Relative _ <br /> %Difference: 8.3 6.2 83 00 <br /> *EQUOIA ANALYTICAL %faecoverr Conc of M S.-Conc of Same ._ x 100 <br /> Spike Conc Added <br /> WW"%Ofference. Conc.of M S -Conc.of M.S.D. x 100 <br /> v� (Conc of M.S + Conc of KS-D)12 <br /> Pledct Manage 2D43281 WAT <8> <br />