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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364.9233 <br /> I 11) 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite a Sacramento,CA 95834 (916) 921-9600 FAX(916)92 1-0 100 <br /> Smith Environmental Client Project ID 14545,95-122 <br /> 1260 Graphics Drive Matrix: Liquid <br /> Modesto, CA 95351-1502 <br /> .Attention: Jeanne Hornsey Work Order#: 9706714-03 Reported: Jun 27, 1997- <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC061797BTEX0IA GCO61797BTEX01A GC061797BTEX0IA GC061797BTEX0IA GCO61797BTEXOIA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8024 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A. Porter A. Porter A.Porter A. Porter A.Porter <br /> MS/MSD#: 9706633-05 9706633-05 9706633-05 9706633-05 9706633-05 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 6/17/97 6/17/97 6/17/97 6/17/97 6/17/97 <br /> Analyzed Date: 6/17/97 6/17/97 6/17/97 6/17/97 6/17/97 <br /> Instrument I.D.#: GGHP-01 GCHP-01 GCHP-01 GCHP-01 GCHP-01 <br /> Cone. Spiked: 10pg/L 10pg/L 10pg/L 30pg/L 30pg/L <br /> Result: 11 10 10 30 74 <br /> MS % Recovery: 110 100 100 100 123 <br /> - ' Dup. Result: 10 10 10 30 74 <br /> MSD% Recov.: 100 100 100 100 123 <br /> RPD: 9.5 0 0.0 0 0 <br /> APD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> :..v...:.:.:.::.::.u. :.:..:.:.:.:...:..::..:.::::::::..:,..,, :......:..v..v....:.._::...,.....,. ..:...... ...::.:.. <br /> :. .:;.::. u <br /> ....... ..:..:n:. n..:..:.. fi � <br /> :: ......... <br /> LCS #: BLK061797 BLK061797 BLK061797 BLK061797 BLK061797 <br /> Prepared Date: 6/17/97 6/17/97 6/17/97 6/17/97 6/17/97 <br /> Analyzed Date: 6/17/97 6/17/97 6/17/97 6/17/97 5/17/97 <br /> Instrument I.D.#: GGHP-01 GCHP-01 GCHP-01 GCHP-01 GCHP-01 <br /> Cone. Spiked: 10pg/L 10pg/L 10pg/L 30pg/L 60pg/L <br /> LCS Result: 9.6 9.1 9.1 28 66 <br /> LCS %Recov.: 96 91 91 93 110 <br /> 60-140 60-140 60-140 60-140 70-130 <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 /> SED OIA NALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> 1 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 �— interference,the LCS recovery is to be used to validate the batch. <br /> Sheila Flynn <br /> Project Mana er <br /> **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9706714.SSS <2> <br />