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' 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX{650)364-9233 <br /> Sequoia <br /> 404 N �gct Lane Walnut Creck,CA 94598 (510) 988-9600 FAX(510)988-4673 <br /> Analytical 819 Sinker Avenue,Stute 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)911 0100 <br /> ,; .,,..�,y�; M knF a}°a~...............',.w,....,+ ��,a�.c :,,�„ <br /> ;G1:i#ler Ryan%Geostrategies Y +' ' �11ent Project ID <br /> SS#5886'' <br /> 6747 Sierra Court, Ste J Matrix Liquid <br /> =Dublin, CA 94568 v� <br /> ,'Attention Deanna Harding Work Order# 98031382-02-04 Reported Apr 15, 1998,c <br /> f� �+r,`*` vl'mow. ` „ ro,c ryr_ ~{,.++> >r Y}.,sa 1. ,. n �+-.. ,.X'.�'N V.. .. rr ,~r,:x,., ,..�.,. �, ��,a,r A :, � ...y�} w"�""„•a. by"`f{'+" e:a-•>,.t II <br /> QUALITY CONTROL DATA REPORT <br /> Analyte MTBE <br /> QC Batch# MS032898MTBEH6A <br /> Analy Method EPA 8260 <br /> Prep Method NA. <br /> Analyst M Williams <br /> MS/MSD # 9803G6501 <br /> Sample Conc N D <br /> Prepared Date 3/28/915 <br /> Analyzed Date 3/28/98 <br /> Instrument I D # H6 <br /> Conc Spiked 50vg/L <br /> Result 54 <br /> MS %Recovery 108 <br /> 0 Dup Result 51 <br /> MSD % Recov 102 <br /> RPD 57 <br /> RPD Limit 0-25 <br /> LCS # LC8033098 <br /> Prepared Date 3/30/98 <br /> Analyzed Date 3/30/98 <br /> Instrument I D.# H6 <br /> Conc Spiked 50pg/L <br /> LCS Result 47 <br /> LCS % Recov 94 <br /> 60.140 <br /> LCS 70-130 <br /> Control Limrts <br /> Please Note <br /> The LCS is a control sample of known,interferent-tree matrix that is analyzed using the same reagents, <br /> Vec <br /> QUOIA NALYTICAL 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 h <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> riterference,the LCS recovery is to be used to validate the batch <br /> ger **MS-Matrix Spike,MSD=MS Duplicate,RPD-Relative%Difference 98031382 GET <3> <br />