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j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> E ' (415) 364-9600 • FAX(415) 364-9233 <br /> •xk?k. ::, <br /> ..r, <br /> �v. ,h..+m......Gi: iyy..}:.. C.......... :.�.�.}•_. ..�:."r .. <br /> .,-.... .:fi'::.::.: ;;;u::•; - :%;:v-,^'v'.:..,..Nti?:ti::i7;.,.:civ:.Ifo-x.;yti.::.2'a.:c:o-����'.`'`�2";`°�'=':'' <br /> RESNA Client Project ID: 8181 E. i ith St.,Tracy <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> roup: 21097 <br /> Attention: Lois Frantz QC Sample G <br /> � nxF.:unw.x;.:-;}v ;:�.��:., .�:vri��;�;:r �.�; ��,;,�¢::<:.��;..:'•:{�:m;.�.u.v..:�:¢;;v.,;:::.:.r.>- ._ rv:..,;.,n.... Oct <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene Xylenes Diesel <br /> Method: EPA 8020 EPA 8020 EPA 6020 EPA 8020 EPA 8015 <br /> Analyst: J.Dinsay J.Dinsay J.Dinsay J.Dinsay J.Dinsay <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg mg/k8 <br /> Date Analyzed: Oct 9, 1992 Oct 9, 1992 Oct 9, 1992 Oct 9, 1992 Oct 9, 1992 <br /> QC Sample#: 210-9772 210-9772 210-9772 210-9772 210-9n2 <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> 5� <br /> - Spike Conc. <br /> Added: 0.20 0.20 0.20 0.60 15 <br /> Conc. Matrix <br /> Spike: 0.20 0.20 0.19 0.57 353 <br /> Matrix Spike <br /> %Recovery: 100 100 95 95 74 <br /> Conc. Matrix <br /> Spike Dup.: 0.20 0.20 0.19 0.56 414 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 100 95 93 86 <br /> Relative <br /> %Difference: 0.0 0.0 0.0 1.8 16 <br /> SEQUOIA ANALYTICAL %Recovery: Conc.of M.S.-Conc.of Sample z 100 <br /> Spike Conc.Added � <br /> Relative%Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> rl L e (Conc.of M.S. + Conc.of M.S.D.) 2 <br /> Frof ect Manager 2109762MAT <br />