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_ Ate. ; _ s „� a <br /> td <br /> 1 <br /> p' <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364.96GU FAX(415)364.9233 <br /> Waterwork Client Project 10: 12102-1,Tri-valley Growers <br /> <'1710 Main Street <br /> Escalon,CA 95320 <br /> :Attention:Chuck Battram QC Sample Group:9f2 1365 Fiaported: Dec 28, 1989 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8029 EPA 6020 EPA 8020 <br /> Analyst: E.G./M.L. E.G./M.L- E.G./M.L. E.G./M.L. <br /> Reporting Units: ppb ppb ppb ppb <br /> Date Analyzed: Dec 15, 5989 Dec 15, 1989 Dec 15, 1989 Dec 15, 1989 <br /> OC Sample#: 912-1373 912-1373 912-1373 912-1373 <br /> i Sample Cone.: N.D. N.D. N.D. N.D. <br /> Spike Cone. <br /> .` Added: 2.6 2.6 2.6 7.7 <br /> i <br /> Cone.Matrix <br /> Spike: 2.3 2.8 2.5 7.6 <br /> } <br /> Matrix Spike t <br /> %Recovery: 90 110 98 99 <br /> Cone.Matrix <br /> Spike Dup.: 1.8 2.2 2.4 5.9 l <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 70 86 94 77 <br /> Relative <br /> %Difference: 24 24 4.1 25 <br /> SEQUOIA ANALYTICAL %Recovery: Cone.of M.S.-Cone.of Sample x 100 <br /> M1 Spike Cone.Added <br /> Relative%Difference; Cone.of M.S.-Cane.of M.S.D. x 100 <br /> B(o (Cone.of M.S.+Cone.of M.S.D.) 2 <br /> Pn}ject Manager 9121385.wAT c2> <br />