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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94596 (510) 988 9600 FAX(510)988 9673 <br /> V„F Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Touchstone Developments Client Project ID 8264-2, Chevron 9-8264 <br /> P O Box 2554 Matrix Solid <br /> Santa Rosa, CA 95405 <br /> Attention Jeff Monroe Work Order # 9511A10-02 Reported Nov 27, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 11-Dichloro Trichloro Chloro <br /> ethene ethene benzene <br /> QC Batch# GC1116958010EXA GC1116958010EXA GC1116958010EXA <br /> Analy Method EPA 8010 EPA 8010 EPA 8010 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 <br /> Analyst A Irl A Li A L1 <br /> MS/MSD # - - - <br /> Sample Cone <br /> Prepared Date <br /> Analyzed Date <br /> Instrument I D # <br /> Cone Spiked <br /> Result <br /> MS % Recovery <br />. Dup Result <br /> MSD % Recov - <br /> RPD <br /> RPD Limit <br /> LCS # 6LK111695 BLK111695 BLK111695 <br /> Prepared Date 11/16/95 11/16/95 11/16/95 <br /> Analyzed Date 11/17/95 11/17/95 11/17/95 <br /> Instrument I D # GCHP8 GCHP8 GCHP8 <br /> Cone Spiked 25ug/Kg 25ug/Kg 25pg/Kg <br /> LCS Result 30 25 24 <br /> LCS % Recov 120 100 96 <br /> MS/MSD <br /> LCS 28-167 35-146 38-150 <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 UOIA 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 /> Mark Cargasacchi '*MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Manager 9511A10 M <6> <br />