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Y <br /> 40 y Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> (1) 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> w 4 .,ry + n ryv +. rr � rip+, +, ,vvi uv+i 11+ r ni Y+y ;`,+r . rs r w n v„ r 3m rv,J.er.4 nYxrr d✓W'.+m.i <br /> ac,. strategles ,+,t'Pr a <br /> } Gettler Ryan/GeoVn�lien "ect ID Unocal+485506,n#6981 <br /> <i3164 Gold Camp Dr #240 Matrix Liquid { <br /> ;;Rancho Cordova, CA 95670 <br /> fC <br /> ,,Attention Greg Gurss Work Order# 9612C85 01, 02 Reported Jan 9, 1997,,, <br /> +.04nW xn .•,+ ,++v,�v�tivv� rnnv vvn r , ♦r.�vJr n rw rn'v 0.>• ,vv vr.r Y4r+,+vv vrwn'4ri+ +,♦n44'.srn5 n vr,+ + i ry r +.v .. w nr <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC122096BTEX17B GC122096BTEX17B CC122096BTEX17B GC122096BTEX17B <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 Helder J Heider J Heider J Heider <br /> M S/MSD#: 961299203 961299203 961299203 961299203 <br /> Sample Conc . N D N D N D N D <br /> Prepared Date 12/20/96 12/20/96 12/20/96 12/20/96 <br /> Analyzed Date 12/20/96 12/20/96 12/20/96 12/20/96 <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 86 84 84 25 <br /> 1S % Recovery 86 84 84 83 <br /> Dup Result. 91 88 88 26 <br /> MSD % Recov : 91 88 88 87 <br /> RPD: 56 47 47 39 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> r` it nv v � i " `i.. • ++ {rc , r .. ' " %^v8 J+}, `.� y v rJ <br /> w�H <br /> LCS#. BLK122096 BLK122096 BLK122096 BLK122096 <br /> Prepared Date 12/20/96 12/20/96 12/20/95 12/20/96 <br /> Analyzed Date 12/20/96 12/20/96 12/20/96 12/20/96 <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: 88 86 87 25 <br /> LCS % Recov : 88 86 87 83 <br /> 60.140 60-1400 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-tree matrix that is analyzed using the same reagents, <br /> QUOIA LYTICAL 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 /> interference,the LCS recovery is to be used to validate the batch <br /> Grego <br /> Iryy <br /> Project Manager *"MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9612085 GET ¢1> <br />