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n � r <br /> Sequoia 680 Chesapeake Drive Redwood Gty 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 /> war Analytical 819 5tnkcr Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> r t r..v 4}r Cr'' vrvr roe v{x 4 n v <br /> n'�sry n rr r ti+ A1r4 v A$ rr.pryr{nuet rr w r ti r r r ' rc ' ♦ r r'.r r r{+ ry . tix yr v A{ <br /> FugrorWest,rInc x Client Prolect ID 9347-1044, Exxon 7-0137 }# <br /> ;1050 Melody Lane, Suite 160 Matrix Liquid <br /> �Rosevdle, CA 95678 <br /> Attention Paul Graff Work Order# 9505C14 -01-2, 4, 7-8 Ae�orted 'Jun 7 1995 <br /> v {rynti+N+nR vy r t r{r v{ ry • fnr.v .k]vr + rc ,..5•... •EvrS Rrcr vr.rc 4n c r. r+aS rcr rlry r r ^ S vv <br /> w S vi + •�vrv4�i[`vrvhr v r r. n h rc r. r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC0522958TEX20A GCO522958TEX20A GC052295BTEX20A GCO52295BTEX20A <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 Minkel J Minkel J Minkel J Minkel <br /> MS/MSD # 950581104 950581104 950581104 950581104 <br /> Sample Conc. N D N D N D N D <br /> Prepared Date 5/22/95 5/22/95 5/22/95 5/22/95 <br /> Analyzed Date 5/22/95 5/22/95 5/22/95 5/22/95 <br /> Instrument 1.13 #' GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked iogg/L 10ug/L 10jig/L 30u9/L <br /> Result 10 10 10 30 <br /> MS % Recovery, 100 100 100 100 <br /> Dup. Result. 11 10 10 31 <br /> MSD % Recov 110 100 100 103 <br /> RPD 95 00 00 33 <br /> RPD Limit 0-50 0.50 0-50 0-50 <br /> tin rc <br /> ,.r.r/i'� <br /> LLS #• <br /> Prepared Date <br /> Analyzed Date - - - - <br /> Instrument I D.# ' <br /> Conc. Spiked - - - - <br /> LCS Result: - - - <br /> LCS % Recov.. - - - <br /> M <br /> LCS 71-133 72-128 72-130 71-120 <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 subjected to the entire analytical procedure $ <br /> the recovery of analytes from the matnx spike does not fail within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager "'MS=Matrix Spike,MSO-MS Duplicate,RPD=Relative%Difference 9505C14 FFF <1> <br />