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,—!1)— Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 998 9673 <br /> 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 Bax 2554 Matrix Solid <br /> Santa Rosa CA 95405 <br /> Attention Jeff Monroe Work Order# 9511A10 -02-09 Reported Nov 27, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> OC Batch# GaC1116950HSPEXB <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3550 <br /> Analyst B Ali <br /> MS/MSD # 9511A1005 <br /> Sample Cone N D <br /> Prepared Date 11/16/95 <br /> Analyzed Date 11/17/95 <br /> Instrument I D # GCHP5 <br /> Cone Spiked 25 mg/Kg <br /> Result 14 <br /> MS % Recovery 56 <br /> Dup Result 14 <br /> MSD % Recov 56 <br /> RPD 00 <br /> RPD Limit 050 <br /> LCS # BLK111695 <br /> Prepared Date 11/16/95 <br /> Analyzed Date 11/17/95 <br /> Instrument I D # GCHP5 <br /> Cone Spiked 25 mg/Kg <br /> LCS Result 17 <br /> LCS % Recov 68 <br /> MS7MSD <br /> LCS 38-122 <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 /> SEGIUOIA 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 J Cargasacchl <br /> Project Manager "'MS=Matrix Spike MSD=MS Dupitcate RPD=Relative%Difference 9511A10 TTT 1 <br />