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f <br /> SEQU61A ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> . ,....v:•:::•.v:::::.v:•:vn•::x::v wr.....xv..� .'n.........'n'n'::;vim:{'••'}\:$:iii:$::t$;i:!4{yf?;:f,.^:^:My <br /> ........ ..................:....n:.,. ..n.:n...x:n.......n......:x:.v...t,.........Rn.n:....G....v{•:n.'.ry.�?:i::.r':}v:•::?:?f:::::...:x:.: ..nw::::::-.. <br /> .. ......... ..........v::•., .w.n......n......:•:::::nv:........n..A................v..v.. ....x........ ,.......... .... \n.:::{{?••p;•I::vi:�i:<j?::::. <br /> .................•:w:.v.:..:......................•;....v•:.................................. ..............fi:.. :;n+v w:.,:?•if-r.....\:.:...... <br /> ............n............... ....!v:w:-...v::::,....•::..,v:..x-.v••::�w.v:.w::::nv:n•:::v:}{::w:.iiW::{vv:::::n.:::.:.,fit.•::R�..v.,w::::::. fn'S...:t... ..r::n9C:{4::ii{•:Li}::•i::x?n.xY.P...,�:::.•.{•::.:xn n :CA\,>:^..?v:i� <br /> ?:i••iiii::!;>.:{:}iiia};nv{::un.:r;:.:..v ...... .. <br /> 780013.01 <br /> Client Project <br /> 'RESNA ID: , Newark Sierra <br /> €2134 Rheem Drive, Suite B Matrix: Solid <br /> >`Pleasanton, CA 94588 <br /> Reported: Nov93 <br /> --Attention: John Lamb OC Sample Group: 3K66101-06 sport ov 23 1 <br /> v.:...: <br /> .............n•.:-:::::::::::.,:..::-rat:::u?.nacaa:::•::5::;�::::.or:.::,:..:..,..�,...,�...,:-•.xwc:,rxw•:.u-•-,-�::::.n::xx�,w.•. !a�ws.•::r:.:•.na.::an::::::,.,..,r:::n.n:r.:n::.._::::::.,c• - <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA CS= EPA,8020 EPA 50x(3 13/A e^.x.J" <br /> Analyst: E Cunanan E Cunanan E Cunanan E.Cunanan <br /> MS/MSD <br /> Batch#: G3K34806 G3K34806 G3K34806 G3K34806 <br /> Date Prepared: 11/13/93 11/13/93 11/13/93 11/13/93 <br /> Date Analyzed: 11/15/93 11/15/93 11/15/93 11/15/93 <br /> Instrument I.D.#: GCHP-18 GCHP-18 GCHP-18 GCHP-18 <br /> Conc. Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg <br /> Matrix Spike <br /> %Recovery: 85 8s 90 87 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 85 90 90 a8 <br /> Relative% <br /> Difference: 0.0 5.7 0.0 1.1 <br /> ............................................................ <br /> LCS Batch#: - - - - <br /> Date Prepared: - - - - <br /> Date Analyzed: - - - <br /> Instrument I.D.#: - - - <br /> LCS % <br /> Recovery: - - - - <br /> %Recovery <br /> Control Limits: 71-133 72-128 72-130 71-120 <br /> Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. It <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference.the LCS recovery is to be used to validate the batch. <br /> Vickie Tague <br /> Project Manager 3K66101.RES <3> <br />