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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 j <br /> (415) 364-9600 • FAX (415) 364-9233 f <br /> ....... ......................... :;•.n:•.::: :::-r.?:.:.::.:.x:;...._r:rcr.•n::•.uv:::n:::?.:.{{{:{ti is}}:}:::-Y{:i.3.\U:\ti:{O`t`:^`.'::'-}%?3:i{<•:{•;•;{{;;••.— :i <br /> ........ rr.NJ '+w.•xh <br /> .. ....v:x::::�:v: :J:xxhv.•+............. m..v....v-..:a:!:4:.�::.w:F.........r...r..-:F-.:......:.:......x....................• .............. .. w.} ? � n <br /> .:............ ....:.................................. .. {. ........r......rv;•:::.::::..... r..�...:.::u..v.:.:,.:.::::xEi.:{.:{till:{.:'::... :..... <br /> ...::.:.tr.:v::::::�:�::•::.{:..0..................r....:.,.::.�:n:.:.t..t�:.�nv.::..:rt.r:... ..:.�::::::::::::..:.........,....._ __.:::::'::.:.}T:{.::.............:::.:...:..-.. _. \ ...........}.,:•.:r:' :i3krr <br /> ; Brunsin Associates, C. Client Project ID: 260.4Doane Products <br /> 1735 E. Bayshore, Suite 2A } <br /> Redwood City, CA 94063 <br /> Attention: Joel Bruxvoort OC Sample Group: 2094166 73 Reported: Oct 5, 1992';:::: i <br /> n rr.v.n•. ... nF.H.ri?p;ry..,:.:.-.-.-•nri::.]:{...............?...........K......v................. ..............n......... .......n.. Cc%t{{in;4;.;;{.:;p 1 <br /> ...............:............... ......................................... ...:...n.....,..........�:::::r:{:r.'In•,::::????�::r. ................. .....n:.:.:.}.:�::.:�::.......:. ,..v..v....n.nr:..v........r...r <br /> .....:.............. .... ... .... ........r-......... ...:.:.::::::.�.w-r:vw;•:.•.uh;•:h:?•:r::nv:r:::r....4...........v:.vv:.:vr».hu.....w...n::»nru:u'vvv.vnv:.�:.vii�i:v:{r•hp}hrn:\v.::^:i^:L:f:� <br /> , I <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes .J <br /> Method: EPA 5020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: A.Maralit A.Maratit A.Maralit A.Maraiit <br /> Reporting Units: ug/L ug/L ug/L ►ig/L <br /> Date Analyzed: Sep 30, 1992 Sep 30, 1992 Sep 30, 1992 Sep 30, 1992 i <br /> QC Sample#: GBLK093092 GBLK093092 GBLK093092 GBLK093092 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> (.),pike Conc. <br /> Added: 10 10 10 30 <br /> Conc. Matrix <br /> Spike: 10 10 10 30 <br /> Matrix Spike <br /> %Recovery: 100 100 .100 100 <br /> Conc. Matrix <br /> Spike Dup.: 10 10 9.7 29 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 100 100 97 97 <br /> Relative <br /> %Difference: 0.0 OA 3.0 3.4 j <br /> , <br /> QIIOIA ANALYTICAL %Recovery: Conc.of M.S.-Conc.of Sample x 100 <br /> _ Spike Conn.Added""i Relative%Difference: Cone.of M.S.-Conc.of M.S.D. x 100 <br /> Nokowhat D. Herrera (Cone.of M.S. +Uonc.of M.S.D.)/2 <br /> Project Manager 2094166.BBB <6> <br /> i <br />