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Sequoia 680 Chesapeake Drive Redwood City,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 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0 100 <br /> ...................... ................. ........ <br /> ............ ........n.. <br /> ........... <br /> Blaine Tech Services, Inc. Client Project ID: Chevro9-8632 971119-M2 <br /> 1680 Rogers Ave. Matrix: Liquid <br /> '..,,::San Jose, CA 95112 <br /> .'.-.:Attention: Fran Thie Work Order 9711 C65-02-04 Reported: Dec 10, 1997:.". <br /> ........... ..................... <br /> ............................. <br /> ...........- ..... <br /> ................... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC120297BTFX03A GC120297STEX03A GC120297BTEX03A GC120297BTEX03A GC120297BTEXOSA <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.Miraflab A. Miraftab A. Miraftab A. Miraftab A.Miraftab <br /> MS/MSD#: 9711A7704 9711A7704 9711A7704 9711A7704 9711A7704 <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 12/2/97 12/2/97 12/2/97 12/2/97 12/2/97 <br /> Analyzed Date: 12/2/97 12/2/97 12/2/97 12/2/97 12/2/97 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked: 10yg/L 10pg/L 10 pg/L 30 lig/L 60 lig/L <br /> Result: 9.4 9.3 9,3 26 78 <br /> MS %Recovery: 94 93 93 87 130 <br /> Dup. Result: 8.9 8.8 8.6 24 73 <br /> MSD % Recov.: 89 88 86 80 122 <br /> RPD: 5.5 5'5 7.8 8.0 6,6 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> ................ <br /> ........... <br /> ........... ........ .................... ................ <br /> ................... ...... ........... ..... ... .... <br /> ................ <br /> .................. <br /> ..................................... <br /> LCS #: BLK120297 BLK120297 BLK120297 BLK120297 BLK120297 <br /> Prepared Date: 12/2/97 12/2/97 12/2/97 12/2/97 12/2/97 <br /> Analyzed Date: 12/2/97 12/2/97 12/2/97 12/2/97 12/2/97 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked: 10,ug/L 10pg/L 10pg/L 30 pg/L 60,ug/L <br /> LCS Result: 8.9 8.8 8.7 24 73 <br /> LCS % Recov.: 89 88 87 80 122 <br /> MS/IVISD 60-140 60.140 60-140 60-140 60-140 <br /> LCS 70-130 7D-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 tEl NALYTICAL 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. ff <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 /> Pe gy enner <br /> Pro Manager MS Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9711065.BLA <3> <br />