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Sequoia 980 C-3esapeakc Dnvc Rcdwood Ccy CA 94063 ,1$) 364 9600 FAX 415) 364 9233 <br /> 404 V Wage, Lane Walnut Creek Ca 94598 ,510) 988 9600 CAX ;510) 988 9673 <br /> Analvtical 3t9 Sinker Avenue Sul it:3 Sacramento Ci 95834 '916) 921 9600 FAX 916) 921 0100 <br /> Deita �-Znvlronmerltal Consultants Client Protect ID Exxon 7-3708 Stockton <br /> 3330 Data Drive Matrix uquid <br /> Ranctlo Cordova, CA 95670 Reported Aor 17 1995 <br /> Attention Todd Galati <br /> Work Order 9504300 1]1 -07 Y <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#- 3C041095BTE 05A GC341095BTE{06A GC041o958TEX06A GC0410956TE(06A <br /> Analy Method EPA 8020 <br /> =-z3A 3020 EPA 8020 =0A 8020 <br /> Prep Method: 2-m4 5030 =aA 5030 EPA 5030 EPA 5030 <br /> Analyst: T Granlcner Granlcher 7 Grarncner <br /> ' Granlcner <br /> MS/MSD #" 9503M83-03 9503M83-03 9503M83-03 9503M83-03 <br /> Sample Cone.. 140 v D N D D <br /> Prepared Date ;/10/95 4/10/95 4/10/95 4/10/95 <br /> Analyzed Date- 1/10/95 4/10/95 4/10/95 4/10/95 <br /> Instrument l.I}.#" GC*HPS 3CHP5 GC P13 GCHP5 <br /> Cone. Spiked. 0 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result: a 6 35 36 25 <br /> MS % Recovery" 86 35 86 83 <br /> Dup Result: .35 3 4 as 25 <br /> MSD % Recov . 85 84 85 37 <br /> RPD- 12 12 12 39 <br /> RPD Limit, 0-50 0-50 0-5o 0-50 <br /> ..e r v Lr} " n}xlri t5 xv.[{V{3r}v.nrv.VYr'vu v~b F W t1~rry rt ~nrnr rx v v~ ' rvr }{'.n} wuArt�m 1 <br /> 4w v r + +^ <br /> LCS #' <br /> Prepared Date: <br /> Analyzed Date: <br /> instrument 1.13.e <br /> Cone. Spiked: <br /> LCS Result: <br /> LCS % Recov.. <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> ease L Ote <br /> The LCS is a control sample of known lnierfarent#roe matrix that is analyzed using the same reagents <br /> SEOUPLAANAL.YTLCAL preparation,and analyacal methods employed fortMe samples The mainx spike 1s an aliquot of sample <br /> fortified with known quantrhes of specific compounds and subjected to the enure analytical procedure If <br /> / the recovery of analytes from the me=splice does not fall within specified control 11m1ts due to matnx <br /> interference the LCS recovery 1s to be used to validate the batch 4 <br /> Mike-Gregory <br /> Project Manager -�v15=iVlamx Spike �ti1St)=M1AS i7up11rate 1�P0=Fielatnre Difference <br />