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Sequoia <br /> 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX(415)364-9233 <br /> 404 1J. Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> (D- Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> :....... .::::.;...:.::,.:. ....:v:.: <br /> Smith Canonic Environmental Client Project ID: 94-369-01, Smith Canal <br /> ?:-441 N.Whisman, Bldg. 23 Matrix: Liquid <br /> '';Mountain View, CA 94043 <br /> >'Attention: John Lane Work Order#: 9506205 -01. 2 Reported: Jun 20, 19951".". <br /> ..... ...... ::....::: v. <br /> .; <br /> f <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCO60795STEX02A GCO60795BTEX02A GCO607958TEX02A GC060795BTEX02A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J.Minkel J. Minkel J.Minkel J.Minkel <br /> MS/MSD#: 950603102 950603102 950603102 950603102 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 6/7/45 6/7/95 6/7/95 6/7/95 <br /> Analyzed Date: 6/7/95 6/7/95 6/7/95 6/7/95 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked: 10pg/L 10pg/L 10,ug/L 30pg/L <br /> Result: 11 11 11 32 <br /> MS % Recovery: 110 110 110 107 <br /> ( ' Dup. Result: 10 10 10 30 <br /> MSD %Recov.: 100 100 100 100 <br /> RPD: 9.5 9.5 9.5 5.5 <br /> RPD Limit: 0-50 0-50 0-50 0.50 <br /> :..:::. <br /> LCS #: <br /> Prepared Date: <br /> Analyzed Date: - - - <br /> Instrument I.D.#:__ - - <br /> Conc. Spiked: - - <br /> LCS Result: - <br /> LCS % Recov.: - - - <br /> MS/MSD <br /> LCS 71-133 72-128 72-130 71-120 <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 ANALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> J 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 hatch. <br /> Vickie Tague Clark <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9506205.CAN <1> <br />