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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 9459H (510) 988-9600 FAX(510) 988-9673 <br /> L �Ii1 Analytical 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> r r= <br /> Simith Environmental Client Project ID 14505, 94-36901-10 <br /> 1260 Graphics Drive Matrix: Liquid <br /> Modesto, CA 95351-1502 <br /> :-:Attention: Jeanne Homsey Work Order#: 9701 D82 -01-03, 05 Reported: Feb 6, 1997:?: <br /> (QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xyienes <br /> Benzene <br /> CC Batch#: GCO12897STEX01A GCO12897STEX01A GCO12897BTEXOIA GCO12897BTEX0IA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: R.Geckler R.Geckler R, Geckler R.Geckler <br /> MS/MSD #: 9701134103 970184103 970184103 970184103 <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.#: GCHP1 GCHP1 GCHP1 GCHP1 <br /> Conc. Spiked: 10ug/L 10,ug/L 10Yg/L 30ug/L <br /> Resuit: 10 10 10 30 <br /> MS % Recovery: 100 100 100 100 <br /> Dup. Result: 11 11 11 33 <br /> MSD % Recov.: 110 110 110 110 <br /> RPD: 9.5 9.5 9.5 9.5 <br /> RPD Limit: 0-25 0-25 0-25 0.25 <br /> LCS#: BLK012897 BLK012897 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 I.D.#: GCHP1 GCHP1 GCHP1 GCHP1 <br /> Conc. Spiked: 10ug/L 10ug/L 10ug/L 30pg/L <br /> LCS Result: 9.6 9.5 9.6 29 <br /> LCS % Recov.: 96 95 96 97 <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 /> °`— interference,the LCS recovery is to be used to validate the batch. <br /> Sheila Flynn <br /> Project Mana **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9701DS2.SSS <1> <br />