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s _ <br /> Sequoia <br /> 680 Chesapeake Drive a Redwood City;CA?9406.3 (415)1364-9600 FAX(415)364-9233 <br /> Analytical 1900$ales Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX(510)'686-9689 <br /> 819 Striker Avenue,Suite 8 Sacramento;CA 95834 (91.6) 924-9600 FAX(916)921-0100 <br /> • S <br /> ...•.:. ::. ... .. .;..yr::•i}i:•iiii:•i%"iii};.i;.; :r:f:•m:., <br /> + ..... ........:::::::..............:vii:}::•::•ii;?.}:•:i...... : .�:iiiY-:::-:i:::::: :::•::::::i::i:::::::•:::• :•::•i:iii;::•::•:•::•::::,i:ii.: <br /> iVIPDS Services Client Y6 ect ID: Unocal #0788, 8203 East 11th St,Tracy <br /> 2401 Stanwell Dr., Ste. 400 <br /> Concord, CA 94520 0 ' <br /> Attention: Avo Avedessian QC Sample Group: 4050635=37. . Reported: May 27, A994"-.-'---.. <br /> :: ::::.:...................................... <br /> QUA07t Y,CONTROL DATA REPORT. <br /> SURROGATE : . 3 <br /> EPA EPA EPA EPA, ° <br /> k Method: 8015 Mod. 8015 Wdl. 8015 Mod. ' 8015 Mod: <br /> e Analyst: K.Wimer K Wimer K.Wimer K.Wimer <br /> Reporting Units: µ9/L N9/E= N9/L N9/E <br /> Date analyzed: 5/26/94 5/26/94 5/26/94 5/26/44A <br /> Sample#: =405-0635 405-0636 405-0637 s Matrix Blank ' <br /> 171 <br /> Surrogate <br /> f %Recovery:.. 94 104. 94 _. 100 <br /> If <br /> 3 <br /> SEQUOIA ANIAL'YTICAL,,#1271 /Recovery: Conc.of M.S.-ronc.of Sample., .R x 100 . <br /> -*i <br /> pike ono.Added - <br /> 2i <br /> Relative%Difference; Conc.of M.S.-Conc.of M.S.D. '_x_.100 <br /> K P (Conc.of M.S. + Conc.of M.S.D.)/2 ;, <br /> roject M ager <br /> F . <br /> 40506281MPD .<7> <br />