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680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (41.5) 364-9233 <br /> ._ �-rn-rv�::._:::,:�::::::.:.:..::.:,::r:m-:::.,:,:.:::.:•::.r:�:vvn..,v.:.::-.:..:......:.:...ve,:yii=i::sY.v-r.:�,v,.:ir:•...,-in:.:^^v,,.::.:..x..-..;.:.:-::::.,:.:vmv,,.-.-.:-:.vi::-:•r.:v.:n:..:.:...:..v:.:..:.......:::.:v:...F..}•eFk::i..:.:':v '�:fi:v <br /> ::...:.:.::::.:.N:::::::.tr:a.....v..........:v..S. ..v.4::n..,.....v..v.:..:.::.w.r,r.::.............r. .v. <br /> >Waterwork Client Project ID: Mike Lopez 'Y � � <br /> 1710 Main Street ' ; + <br /> -<Escalon, CA 95320 a j' <br /> : <br /> >Attention: C. Battram QC Sample Group: 910-1496 Repo Oct 23`09 v <br /> .2,:...:..::...::......�:::r:�.+r.w.:.:........-..-.:.:::i::::::::.::-....�::::.:::.:.F::i:C•:.*:-?i}i':x:.:::...t.i.:.�gii�:..: '.:C::::i?':Fi:::-.:.:::: F:F':.r ^:.'l.-.n ::.:.y"'^Y:Sp N.::•'r:i <br /> - .:�;: :.- :ec :....,,.,n:.v..:.:e.>.c..,..,:.:2�;...:.,.:..»r..:.,,.r,,..<:.....a,..,-r...��r;ce+..:�:r.:...:.,.n.»..:................... 77 <br /> . .. ..n...u::....:...........:........:r.,.v.,r.r.:...::........,..:fz;H'i'::.rr ...r -:a''..;i;,y. <br /> ENV]RONMEN T AL HEALTH <br /> ES <br /> QUALITY CONTROL DATA REPORT <br /> PE ,�<�IT,' -ERVE' <br /> ANALYTE Toluene Ethyl xylenes <br /> Benzene <br /> EPA EPA EPA <br /> Method: 8015/8020 8015/8024 8015/8020 <br /> Analyst: G. Spak G. Spak G. Spak <br /> Reporting Units: mg/k9 mg/kg mg/kg <br /> Date Analyzed: Oct 16, 1989 Oct 16, 1989 Oct 16, 1989 <br /> QC Sample #: 910-2118 910-2118 910-2118 <br /> Sample Cone.. N.D. N.D. N.D. <br /> Spike Conc. <br /> Added: 1.0 1.0 3.0 <br /> I <br /> Conc. Matrix <br /> Spike: 0.64 0.92 2.7 <br /> I <br /> i <br /> Matrix Spike <br /> %Recovery: 64 92 90 <br /> Conc. Matrix <br /> Spike Dup.: 0.69 0.97 2.7 <br /> Matrix Spike <br /> Duplicate <br /> •Recovery: fig 97 90 <br /> Relative <br /> •Difference: 7.5 5.3 0.0 <br /> SEQUOIA ANALYTICAL %Recovery: Cane.of M.S.-Conc,of Sample x 100 <br /> Spike Conc.Added <br /> `—' Relative%Difference: Conc.of M.S.-Conc,of M.S.D. x 100 <br /> kth W. Hackl (Conc.of M.S. + Conc.of M.S.D.)/2 <br /> Manager 9101496.wAT <2> <br /> i <br />