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Sequoia 680 Chesapeake Drive Redwood Cim CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 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)921-0100 <br /> Blaine Tech Services Inc. Client Project ID: Chevron 9-055797090 -Fi <br /> <:4 <br /> <1680 Rogers Ave, Matrix: Liquid t< <br /> San Jose, CA 95112 <br /> 'Attention: Fran Thie Work Order#: 9709102-02, 05 ported:orted: Se 18 1997::' <br /> N..:.:......:.,.:.....::.:.:....;::}:;..:........ <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC090997BTEX02A GC090997BTEX02A GCO90997BTEX02A GCO90997BTEX02A GCO90997BTEX02A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A.Miraftab A.Miraftab A.Miraftab A.Miraftab A. Miraftab <br /> MS/MSD#: 970913501 970913501 970913501 970913501 970913501 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 9/9/97 9/9/97 9/9/97 9/9/97 9/9/97 <br /> Analyzed Date: 9/9/97 9/9/97 9/9/97 9/9/97 9/9/97 <br /> Instrument l.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10us/L 10pg/L 10ug/L 30lrg/L 60ug/L <br /> Result: 5.4 5.7 5.7 16 34 <br /> IVMS % Recovery: 54 57 57 53 57 <br /> Dup. Result: 9.9 9.5 9.7 30 64 <br /> MSD % Recov.: 99 95 97 100 107 <br /> RPD: 59 50 52 61 61 <br /> RPD Limit: 0.25 0-25 0-25 0-25 0-25 <br /> LCS #: BLK090997 BLK090997 BLK090997 BLK090997 BLK090997 <br /> Prepared Date: 9/9/97 9/9/97 9/9/97 9/9/97 9/9/97 <br /> Analyzed Date: 9/9/97 9/9/97 9/9/97 9/9/97 9/9/97 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10pg/L 10ug/L 10Erg/L 30ug/L 60Ng/L <br /> LCS Result: 10 9.8 9.9 30 65 <br /> LCS % Recov.: 100 98 99 100 108 <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 /> 0 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 /> 7g ginner <br /> Pro ect Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9709102.BLA c2> <br />