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Sequoia 680 Chesapeake Drive Redwood Cim 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 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> zBlaine Tech Services, Inc Client Project ID �Shelf Stockton �970822-J4 <br /> F;1680 Rogers Ave Matrix Liquid f <br /> 'San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9708D38 -01-02 Reported Sep 8, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GCO82797BTEX03A GC082797BTEX03A GCO82797BTEX03A GC082797BTEX03A GCO82797BTEX03A <br /> Anally. Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A.Miraftab A.Miraftab A. Miraftab A.Miraftab A_Miraftab <br /> MS/MSD# 970806601 970806601 970806601 9708C6601 9708C6601 <br /> Sample Conc : N D N D N D N D N D <br /> Prepared Date: 8/27/97 8/27/97 8/27/97 8/27/97 8/27/97 <br /> Analyzed Date- 8/27/97 8/27/97 8/27/97 8/27/97 8/27/97 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked 10 fig/L 10itg/L 10ug/L 30 leg/L 60Ng/L <br /> Result: 10 10 10 28 72 <br /> MS%Recovery 100 100 100 93 120 <br /> Dup. Result 10 99 99 28 71 <br /> MSD % Recov : 100 99 99 93 118 <br /> RPD- 00 10 10 00 14 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS#: BLK082797 BLK082797 BLK082797 BLK082797 BLK082797 <br /> Prepared Date: 8/27/97 8/27/97 8/27/97 8/27/97 8/27/97 <br /> Analyzed Date 8/27/97 8/27/97 8/27/97 8/27/97 8/27/97 <br /> Instrument I.D # GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked 10pg/L 10pg/L 10ftg/L 30jig/L 60ug/L <br /> LCS Result 97 96 9 6 27 69 <br /> LCS % Recov : 97 96 96 90 115 <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 dote <br /> The LCS is a control sample of known,interferent-tree matrix that is analyzed using the same reagents, <br /> U A NALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> OLfortified 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 /> enner <br /> Project Manager **MS=Matrix Spike, MSD=IVIS Duplicate,RPO=Relative% Difference 9708D38 BLA <1> <br />