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jZ1A ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364-9600 a FAX(415)364-9233 <br /> nu�:y j� 1kr �'r`»,<.fv #xF-..,..�" k„x<, ry. `-,,4 e"i -.0 'fix '.,<.�' .x. -�.c r '11ZTc..r-n2�.�:,....w<>x�..k' a a,a <br /> 4Waterwork Client Project IµD:00148-3,Stockton Smith Canal 4' <br /> ;i <br /> x.1710 Main Street <br /> e IEscalon CA 953L�0 1 <br /> Attention Dave Welch OC Sample Group 010 364 Reported:Nov 2 1969 �1 <br /> r <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Bern ins TWuens ethyl Xylenes <br /> Benzene - - — <br /> Method: EPA 8020 EPA 6020 EPA 8020 EPA 8020 i <br /> I` Analyst: K Mftchell K Mitchell K Mitchell K Mitchell <br /> Reporting Units: ppb ppb ppb ppb <br /> j.a Date Analyzed: Oct 31. 1989 Oct 31, 1989 Oct 31, 1989 Oct 31, 1889 <br /> j?I QC Sample#: 910-2237 910-2237 910-2237 910.2237 <br /> S <br /> a Sample Cone.: N.D. N.D. N.D. N.D. <br /> F <br /> VZ <br /> Spike Cone. <br /> Added: 2.5 2.5 25 7.5 <br /> ra <br /> Conc.Maty'.:,: <br /> Spike: 2.1 2.1 2.5 5.7 <br /> i <br /> Matrix Spike <br /> 16 Recovery: 84 84 100 76 <br /> Cone.Matrix <br /> Spike Dup.: 2.0 1.9 2.2 5.6 <br /> Matrix Spike <br /> D11plicate <br /> ` %Recovery: 60 76 88 74 , <br /> t <br /> Relative <br /> %Difference: 1.6 2.5 1.4 1.8 <br /> �t s <br /> r r <br /> SEQUOIA ANALYnCAL Cone.of M.S.-Cone.of Sample X 100 <br /> Spike Cons.Added <br /> Flelativs%[Werenca: _ Cone.of M.S.-Cone.of M.S.O. x 100 <br /> Bjorn A BjOrkman (Cone,of M.S.+Cone.of M.S.D.) 2 <br /> Project Manager <br /> 91033B4.WAT <2> <br />