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IDSequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> IAnalytical 819 Striker Avcnue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> --Blaine Tech Services, Inc. Client Project ID: Shell 1267 Country Club <br /> ><;1680 Rogers Ave. Matrix: Liquid <br /> ;;:San Jose, CA 95112 <br /> <Attention: Fran Thie Work Order#: 9802J20 -01-02; Reported: Mar 20, 1998:::::; <br /> Xr <br /> 9802J21-01 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC031298BTEX21A GC031298BTEX2IA GC031298BTEX2IA GCO31298STEX21A GC031298STEX21A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA S015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: C. DeMartini C. DeMartini C.DeMartini C.DeMartini C.DeMartini <br /> MS/MSD #: 9803J2501 9803J2501 9803J2501 9803J2501 9803J2501 <br /> Sample Conc: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Analyzed Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Instrument I.D.#: GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc. Spiked: 10ug/L 10ug/L 10ug/L 30ug/L 60pg/L <br /> Result: 11 10 10 30 49 <br /> MS %Recovery: 110 100 100 100 82 <br /> Dui}. Result: 11 10 10 31 51 <br /> MSD % Recov.: 110 100 100 103 85 <br /> RPD: 0.0 0.0 0.0 3.3 4.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS #: BLK031298 BLK031298 BLK031298 BLK031298 BLK031298 <br /> Prepared Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Analyzed Date: 3/12/98 3/12/98 3/12/98 3/12/98 3/12/98 <br /> Instrument I.D.#: GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc. Spiked: 10ug/L 10,ug/L 10ug/L 30ug/L 60ug/L <br /> LCS Result: 10 10 10 31 50 <br /> LCS %Recov.: 100 100 100 103 - 83 <br /> 60-140 60-140 60-140 60-140 60-140 <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 /> S I A ALYTICAL 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 /> egg nner <br /> Zt Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9802J20.BLA <1> <br />