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rJ <br /> Sequoia 680 Chesapeake Drivc Redwood City,CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> - I,� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> i <br /> � { r{v} Y n• { rix}�� <br /> ` t w �v4y.ri v0 `^}hr r+r l�r wv ry uYr r r yr nr v v 9r+ nti m xrY+.wr ivxx++v+Ymvin{Yr <br /> >Gettler Ryan fGeostrategies J044Projeci 16' Unoca(4707VPacifici698jr f <br /> `6747 Sierra Court, Ste J Matrix Liquid ` <br /> }Dublin, CA 94668 { <br /> Attention Steve Carur Work Order# 9602H39 -01 Reported Feb 29, 1996.Y <br /> } <br /> Yui ur.' nvn yr K v v r v ry v v yr n.v vv nwrrrv*^ + vtivvv++vmvti}rry +n^vY r r v rn r + tivr + mx + + + + n mr r ++ +nv�}vr.wv i{v v1 nv'e <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO22896BTEX02A GCO22896BTEX02A GCO22896BTEX02A GCO22896BTEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst J Woo J Woo J Woo J Woo <br /> MS/MSD #. G9602B78-01 E G9602B78-01 E G96021378-01 E G9602B78 01 E <br /> Sample Conc N D N D N D N D <br /> Prepared Date. 2/28/96 2/28/96 2/28/96 2/28/96 <br /> Analyzed Date 2/28/96 2/28/96 2/28/96 2/28/96 <br /> Instrument I D # GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked. 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result 10 10 10 30 <br /> MS % Recovery. 100 100 100 100 <br /> Dup Result- 99 10 i0 30 <br /> MSD % Recov. 99 100 100 100 <br /> RPD 10 00 00 00 <br /> RPD Limit: 0.50 0-50 0-50 0-50 <br /> 4 <br /> rrv.r rev J s r Y r V;`: z w `}` k r rx ,.,.;4r rn�n•vrr+ r .err r 'Yrnn, r w.i'w$`a+.i�i?x.�.+r;.ir.F.rr4 <br /> rnn.rv.{.. b..a r+n� n• r.> o^, +rn r ...vrr , w ^+ rr.r ,n nr. r ^o a irr n.r.,.'. `+.,+^.+..are , �J <br /> LCS # GBLK022896A GBLK022896A GBLK022896A GBLK022896A <br /> Prepared Date 2/28/96 2/28/96 2/28/96 2/28/96 <br /> Analyzed Date. 2/28/96 2/28/96 2/28/96 2/28/96 <br /> Instrument LD #- GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Result- 10 98 9 7 29 <br /> LCS % Recov 100 98 97 97 <br /> LCS 70-130 70-130 70-130 70-130 <br /> Control Limits <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 sub)ected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Ate <br /> interference,the LCS recovery is to be used to validate the batch <br /> Gregory <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 96021-139 GET <1> <br /> r� _ <br />