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I <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 9406(415) 364-9600 FAX(415) 364-9233 <br /> .L'YJI <br /> Analytical 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> A <br /> I naical 819 Striker Avenue,Suite 8 Sacramento,;CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> 1 l <br /> f Smith Environmental Client Project ID: 18659, 94-369-01.10 <br /> 441 N Whlsman Bldg. 23 Matrix: Liquid <br /> Mountain View, CA 94043 <br /> Attention Bob Azam Work Order# 9607G32 -01-04 Reported Aug 9 1996 <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Diesel <br /> Benzene <br /> QC Batch#: 00080296BTEX07A GCO80296BTEX07A GCO80296BTEX07A GC080296BTEX07A GCO731960HBPEXY <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> i Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 3520 <br /> Analyst: J.Heider J.Heider J.Heider J.Heider J.Minkel <br /> MS/MSD #: 9607HO202 9607HO202 9607HO202 9607HO202 9607HO201 <br /> Sample Cont:.: N.D. N,D. N.D. N.D. 55 <br /> Prepared Date: 8/2/96 8/2/96 8/2/96 8/2/96 7/31/96 <br /> Analyzed Date: 8/2/96 - 8/2/96 8/2/96 8/2/96 8/5/96 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 GCHP4 <br /> Conc. Spiked: 10Ng/L 10pg/1- 10pg/L 30 pg/L 10001ig/L <br /> Result: 8.1 8.2 8.1 24 590 <br /> MS %Recovery: 81 82 81 81 54 <br /> Dup. Result:. e.0 8.4 8.2 25 560 <br /> MSD%Recov.: e0 e4 82 83 51 <br /> RPD: 1.2 2.4 1.2 2.0 5.2 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-50 <br /> LCS #: BLK080396 ELK080396 BLK080396 BLK080396 BLK073196 <br /> Prepared Date: 8/2/96 8/2/96 8/2/96 8/2/96 7/31/96 <br /> Analyzed Date: 8/2/96 8/2/96 8/2/96 8/2/96 8/5/96 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 GCHP4 <br /> Conc. Spiked: 10pg/L 10pg/L 10pg/L 30 pg/L 1000pg/L <br /> LCS Result: 9.3 9.4 9.6 29 640 <br /> LCS %Recov.: 93 94 96 96 64 <br /> MS/MSD 60-140 60-140 60-140 60-140 50-150 <br /> LCS 70-130 70-130 70-130 70-130 60-140 <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 /> SEQFka <br /> TI A 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 /> interference,the LCS recovery is to be used to validate the batch.Vyta <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9607G32.SSS c1> <br />