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v r} rl ► <br /> Sequoia • 680 Chesapeake Dnve Redwood City,CA 9406(415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 8 t 9 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> w{ n v v L } 4 r n{ <br /> }n 'r , n„4ia 4 ` •., v �v. . nor rr ,{ n ,wr nnrN+vvnv vv .. rFv +-ry n , ~ r r r r4 r rn♦ h4 ♦n r rr vJ <br /> Gettler Ryan/6eostrategies Olient Project ID' 'Unocal 5705 Marc fi Lane-s981r n x J <br /> '6747 Sierra Court, Ste J Matrix Liquid <br /> ,'Dublin, CA 94568 #i <br /> i3Attentfon Greg Gurss Work Order# 9606F18 -01, -02 Reported Jul 11, 1996,, <br /> 6vi rn } v r J v . r h ry nr „r vn4{r r r '{ r vi r.v} Orr. ^. n r iw n vh r v ry n v•v v v, r 4 vu,. , r:ri,,,l,rnvv <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO62796BTEX17A GCO62796BTEX17A GC062796BTE)(17A GCO62796BTEX17A <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# G9606807-03B G9606807-03B G9606807-03B G9606807-03B <br /> Sample Conc: N D N D N D N D <br /> Prepared Date 6/27/96 6/27/96 6/27/96 6/27/96 <br /> Analyzed Date 6/27/96 6/27/96 6/27/96 6/27/96 <br /> Instrument I D.# GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc 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: 97 96 95 28 <br /> MSD % Recov - 97 96 95 93 <br /> RPD 30 41 51 69 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> LCS #. GBLK062796A GBLK062796A GBLK062796A GBLK062796A <br /> Prepared Date 6/27/96 6/27/96 6/27/96 6/27/96 <br /> Analyzed Date 6/27/96 6/27/96 6/27/96 6/27/96 <br /> Instrument I.D # GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc. Spiked' 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Result 95 96 97 29 <br /> LCS % Recov 95 96 97 97 <br /> 60-140 60-140 60-140 60-140 <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 subjected 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 /> Oeregorvy interference,the LCS recovery is to be used to validate the batch <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=.Relative%Difference 9606F18 GET <1> <br /> z� <br />