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:� .. ,mss � ate,' t4 �. -& �a €d".a � '�� --�•,_ �� �`=:., - 4. - .Z"' -t^Ri` i'.y'. <br /> �r <br /> "fit � � �. �_ z �'+�� r •� ��'�`� � c-�'� �,,a'A��.� � ,fir � -�°` r a� ,x �� <br />�" ��v^-. _ , .t� �`--'�°�. � r,- _ r 'Wiz_ _ � g •�'�, � :€� - ` e ` .�,.^_ <br /> e a <br /> a <br /> m <br /> rl. <br /> SEQUOIA ANALYTICAL <br /> 4063 <br /> 680 Chesapeake Drive • Redwood City,CA 9 <br /> (41,5)364-9600 FAX(415)364.9233 <br /> rI]elta Environmental Consultants <br /> Client project <br /> lb'.40-88-14 /Shei1,Stockton,CA <br /> _ 3330 Data Drive Reported Feb 11 1991 <br /> {Rancho Cordovan CA 95670 QC Sample Group:., <br /> "Attention: <br /> Jlm BrowneEl <br /> QUALITY CC,.ITROL DATA REPORT <br /> Ethyl- <br /> ANALYTE Benzene Toluene benzene Xylelies <br /> Method: EPA 8020 <br /> EPA 0020 EPA 8020 EPA 8020 <br /> Analyst: E.G./G.M. <br /> E.G./G.M. E.G./G.M. E.G.ng. <br /> ng n9 <br /> Reporting Units: ns Feb 5. 1991 Feb 5, 1991 <br /> Date Anal,(zed: Feb 5, 1991 Feb 5. 1991 W013094 G14t3094 G 10 13094 <br /> QC Sample#: G1013094 <br /> N.D. N.D. N.D. <br /> Sample Conc.: <br /> N.D. <br /> Spike Conc. 100 100 300 <br /> Added: 100 <br /> Conc.Matrix 110 98 300 <br /> Spike: 120 <br /> Matrix Spike 110 98 100 <br /> %Recovery: 120 <br /> Conc.Matrix i20 100 310 <br /> Spike DUp•.* 120 <br /> Matrix Spike <br /> 120 <br /> Duplicate 100 100 <br /> P <br /> %Recovery: 120 <br /> Relative 8.7 2.0 0.0 <br /> %Difference: 0.0 <br /> %itecovery: CIDof M.S. e�°f Sample <br /> X 100 <br /> aQUOIA ANALYTICAL — SVke Conc.Adders <br /> Conc.of M.S.-Conc,of M.S.D. <br /> X100 <br /> % Dilterenc enc.of M.S.*Gone.of M.S.D.)/2 <br /> ,;; { 1020239.DLT 42, <br /> Mall(' ..McB,cney_T_,_� --—- .-----_-- <br /> Project Manager <br /> a,- <br /> s _ - - - <br /> r <br />