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} <br /> k <br /> • SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 <br /> (510) 686-9600 - FAX (510)686-9689 <br /> Waterwork(Escalon Office)' Client Project ID #322-JB Terminal <br /> 1710 Main Street <br /> a Escalon.CA 55320 <br /> Attention Nora Kataoka OC Sample Group 1100523-526 Reported Oct 23 1991 <br /> ,,.e ,f,Yt v < i r o. .i, v t, ,. 3'.i�vx /Lhr4,4� ^ ^^ ♦.. 'k ^ , .y \n A ti.*•_�,ky�:�. ����\\c\bti;\�„�.'`,.;U�43��;.:�`.\��1a <br /> 42UALITY CONTROL DATA REPORT <br /> ANALYTE Ethyw _ - <br /> Benzene Toluene Benzene Xyienas <br /> EPA EPA EPA EPA <br /> Method 8015/8020 8015/8020 8(15/802(! 8015/8020 <br /> Analyst RH/JF RH/JF RH/JF RH/JF <br /> Reporting Units ug/L ug/L u9/L ug/L <br /> Date Analyzed Oct 21, 1991 Oct 21, 1991 Oct 21 1991 Oct 21, 1991 <br /> OC Sample# Matrix Blank Matrix Blank Matrix Blank Matrix Blank <br /> Sample Cone.: N D N D N D N D <br /> . Spike Cone. <br /> Added: 20 20 20 60 <br /> Cone Matrix <br /> Spike. 23 22 23 72 <br /> Matrix Spike <br /> %Recovery, 115 110 115 120 <br /> Cone. Matrix <br /> Spike Dup . 22 22 23 71 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery 110 4 i0 115 118 <br /> Relative <br /> %Difference 44 0 0 14 <br /> Laboratory blank contained the fallowing analytes None Detected <br /> SEQUOIA ANALYTICAL %Recovery- Conc of M S -Cone of Sample x 100 <br /> Spike Conc Added <br /> Btwbve%Difference Cone of M S -Cone of M S D x 100 <br /> Ju a R Malersteln (Conc of m S + Cone of M S D) 2 <br /> Pr ect Manager <br /> 1100523 WAT <2> <br />