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Sequoia 680 Chesapeake Drive Redwood C",CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (5T0) 988 goo FAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> xYvi{i yr,v ,x `v riU vJ. •�, xv. `+v •• ,' :v. i <br /> °Blaine Tech Services,'Inc Client P'ro ect ID <br /> � Chevron 9-1918/960730-Ei2 <br /> [985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 tv <br /> q,Attention Jim Keller Work Order# 9608106-03, 10 Reported Aub 15, 1996; <br /> , i , Y 4 • v t 1 v { v { r *V�•y.i Ui <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GCW1396BTEX20A GCO81396BTEX20A GCD813968TEX20A GCO61396BTEX20A <br /> Analy. Method- EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. D Jirsa D Jirsa D Jirsa D Jirsa <br /> MS/MSD # 960816714 950816714 96W16714 960816714 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Analyzed Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Instrument 1 D # GCHP2D GCHP20 GCHP20 GCHP20 <br /> Conc Spiked 10pg/L 10P9/L 10pg/L 30pg/L <br /> Result 84 83 82 24 <br /> MS % Recovery 84 83 82 80 <br /> Dup Result 82 so 81 24 <br /> MSD % Recov 82 80 81 80 <br /> RPD 24 37 12 Q0 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> LCS# BLK081396 BLK081396 BLK081396 _ ' BLK081396 <br /> Prepared Date. 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Analyzed Date 8/13/96 8/13/96 8/13/96 8/13/96 <br /> Instrument I D #. GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc Spiked 10ug/L 10pg/L 10pg/L 3Qp9/L <br /> LCS Result' 86 86 86 26 <br /> LCS % Recov.• 86 86 86 87 <br /> MS/MS/MSD 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 ANA ICAL 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 /> r t interference,the LCS recovery is to be used to validate the batch <br /> Peggy Penner <br /> Project Mana er "*MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 96081D6 BLA a2> <br />