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.. . ... . .. <br /> Sequoia680 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)92 1-0 100 <br /> �r <br /> ........ ;.::::. .:.. <br /> ::: :.:..::.................: .............. <br /> .....: :._.. :.:.::..:..:::.:...:.........:... _:..:. <br /> .Smith Environmental Client Project ID: 14640, 95-122 <br /> =1260 Graphics Drive Matrix: Liquid <br /> ':-Modesto, CA 95351-1502 <br /> -':::Attention: William Madison Work Order#: 9703997-01, 02, 03 Reported: Apr 9, 1997;:_:; <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GCO32197BTEX22A GC032197BTEX22A GCO32197BTEX22A GC032197BTEX22A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A.Porter A.Porter A.Porter A.Porter <br /> MS/MSD#: 9703A44-04 9703A44-04 9703A44.04 9703A44-04 <br /> Sample Conc: N.D. N.D. N.D. N.Q. <br /> Prepared Date: 3/21/97 3/21/97 3/21/97 3/21/97 <br /> Analyzed Date: 3/21/97 3/21/97 3/21/97 3/21/97 <br /> Instrument I.D.#: GCHP-22 GCHP-22 GCHP-22 GCHP-22 <br /> Conc. Spiked: 10 ug/L 10 ug/L 10 ug/L 30 yg/L <br /> Result: 10 10 11 31 <br /> MS % Recovery: 100 100 110 103 <br /> -:r Dup. Result: 10 10 11 31 <br /> MSD% Aecov.: 100 100 110 103 <br /> RPD: 0 0 0 0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> LCS #: BLK032197BS BLK032197BS BLK032197BS BLK032197BS <br /> Prepared Date: 3/21/97 3/21/97 3/21/97 3/21/97 <br /> Analyzed Date: 3/21/97 3/21/97 3/21/97 - 3/21/97 <br /> Instrument I.D.#: GCHP-22 GCHP-22 GCHP-22 GCHP-22 <br /> Conc. Spiked: 10ug/L 10pg/L 10Ng/L 30Ng/L <br /> LCS Result: 10 10 11 31 <br /> LCS%Recov.: 100 100 110 103 <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 /> -. SEQUOIA ANALYTICAL 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 /> 0 interference,the LCS recovery is to be used to validate the batch. <br /> Sheila ynn <br /> Project Manages **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9703997.5SS <2> <br /> *1 <br />