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SEQUOIA A UALYTIg4063 AL <br /> 680 Chesapeake Drive 9 Redwood City CAStar (4 r5) 364 9600 • FAX (415) 364 9233 <br /> x,- "♦Z— } <br /> u�Waterwork Client Project ID #322,J S Terminal Tracy <br /> 31710 Main Street <br /> Escalon,CA 95320 <br /> ;}Attention Nora Kataoka OC Sample Group 0103640-0103652 Reported Nov 12, 1990 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene _ <br /> i <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 5020 <br /> Analyst L G L G t_G t G <br /> Reporting Units no no ng n9 <br /> Date Analyzed NOV S, 1990 Nov 6 IM Nov 6, i990 Nov 6, 1990 <br /> 00 Sample # 010-3977 0103977 0103977 010-3977 <br /> Sample Cone • N D 40 65 80 <br /> Spike Cone <br /> Added: 100 100 100 300 <br /> Cone Matrix <br /> Spike. 130 120 110 340 <br /> Matrix Spike <br /> %Recovery: 130 110 110 110 <br /> Cone.Matrix <br /> Spike Dup.: 130 120 110 320 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery; 130 110 100 110 <br /> Relative <br /> %Difference 16 00 73 73 <br /> SEQUOIA ANALYTICAL RecmOry Cone of M S Conc of Sample x 100 <br /> f <br /> Spike Cone Added <br /> J�vtative%Difference Cone of M S -Conc of A+t S D x 100 <br /> abeth Hach (cone of M s f Cone of 1*1 S D)12 <br /> P o]ect Manager 103648 WAT <2> <br />