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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> ' 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 986-9604 FAX(510)988.9673 <br /> frlll>� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)92 1-0 100 <br /> .:Blaine Techs Services, Inc. Client Project 10: Chevron 9-8632 970902-172 <br /> > 1680 Rogers Ave. Matrix: Liquid <br /> €,"'San.lose, CA 95112 <br /> :.:Attention: Fran Thie Work Order#: 9709126-01, 05 Reported: a 17, 1997.,:: <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GCO90997BTEX02A GCO90997BTEX02A 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 LD.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10pg/L 10pg/L 10pg/L 30ug/L 60ug/L <br /> Result: 5.4 5.7 5.7 16 34 <br /> MS % 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: 10ug/L 10pg/L 10ug/L 30ug/L 60pg/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 50-140 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 /> Is7geNALYTICAL 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. H 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 /> nager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9709126.BLA <2> <br />