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` y Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92t-0100 <br /> vo .yv^ r r` Rn�tYx µ4 n ti xv h r-,N <br /> yK Y s4if d ,a' t ot+. .., n t•.�:j k.r Nr. <br /> n Blaine Tech 6"lces, Inc �Clent Project ID Chevron 9-8264/970827-i"1 <br /> >11680 Rogers Ave Matrix Liquid <br /> -San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9708E76-02, 04, 05 Reported Sep 9, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Xylenes <br /> Benzene <br /> CSC Batch# G0083097BTEX22A GCO83097BTEX22A GC083097BTEX22A GCOM97BTEX22A GCO83097BTEX22A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method EPA 5030 EPA 5030 FPA 5030 EPA 5030 EPA 5030 <br /> Analyst J Heider J Heider J Heider J Heider J Heider <br /> MS/MSD#. 970BE45-08 9708E45-08 970BE45-08 9708E45-08 9708E45-08 <br /> Sample Conc N D N D N D ND N D <br /> Prepared Date 8/30/97 8/30/97 8/30/97 8/30/97 8/30/97 <br /> Analyzed Date 8/30/97 8/30/97 8/30/97 8/30/97 8/30/97 <br /> Instrument 1.13 # GCHP-22 GCHP-22 GCHP-22 GCHP-22 GCHP-22 <br /> Conc Spiked 10ug/L 10ug/L 10ug/L 30 p9/1- 60 <br /> P9/1- <br /> Result <br /> 9/LResult 8 9 89 88 25 52 <br /> MS % Recovery 89 89 88 83 87 <br /> Dup Result 92 90 90 25 53 <br /> MSD % Recov 92 so 90 83 88 <br /> RPD 33 11 22 00 19 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS# GWBLK083097 GWBLK083097 GWBLK083097 GWBLK083097 GWBLKOM97 <br /> Prepared Date 8/30/97 6/30/97 8/30/97 8/30/97 8/30/97 <br /> Analyzed Date 8/30/97 8/30/97 8/30/97 8/30/97 8/30/97 <br /> Instrument I D #. GCHP-22 GCHP-22 GCHP-22 GCHP-22 GCHP-22 <br /> Conc Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L 60 pg/L <br /> LCS Result 89 89 88 25 53 <br /> LCS % Recov 89 89 88 83 88 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 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 /> A NALYTICAL 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 /> P genner interference,the LCS recovery is to be used to validate the batch <br /> y <br /> Pro t Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 970BE76 BLA a4> <br />