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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 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 /> Smith Environmental Client Project ID 94-367 10-11/ 14506 <br /> 1260 Graphics Drive - Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Homsey Work Order# 9701 E07 -01, 03-05 Reported Feb 5, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC0128978TEX03A GCO12897BTEX03A GCO12897BTEX03A GCO12897BTEX03A <br /> Anally 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# 970191704 970191704 970191704 970191704 <br /> Sample Conc, N D N D N D N D <br /> Prepared Date 1/28/97 1/28/97 1/28/97 1/28/97 <br /> Analyzed Date 1/28/97 1/28/97 1/28/97 1/28/97 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked long/L 10jug/L 10yg/L 30mg/L <br /> Result. 10 10 10 32 <br /> MS % Recovery 100 100 100 107 <br /> Dup Result. 10 10 99 31 <br /> MSD % Recov. 100 100 99 103 <br /> RPD 00 00 10 32 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> LCS# BLK012897 8LK012897 BLK012897 BLK012897 <br /> Prepared Date 1/28/97 1/28/97 1/28/97 1/28/97 <br /> Analyzed Date 1/28/97 1/28/97 1/28/97 1/28/97 <br /> Instrument LD # GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked. 10 jtg/L 10 ftg/L 10pg/L 30 jug/L <br /> LCS Result 11 11 10 32 <br /> LCS % Recov 110 110 100 107 <br /> 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 /> . SEQ OIA ALYTICAL 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 /> Zynn <br /> interference,the LCS recovery Is to be used to validate the batch <br /> Sheila <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9701 E07 SSS <1> <br />