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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget I ane Walnut Creek CA 94598 (915)988-9600 FAX(925)988-9673 <br /> qwr Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)911-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> Blaine Tech Services Inc Client Project ID Chevron 9-8264 <br /> 1 / 981124-J2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Christine Lillie Work Order# 9811 H50 -01 Reported Dec 22, 1998 <br /> (QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME1130986010MDA ME113098501OMDA ME11309860101VIDA ME113098601OMDA <br /> Anally Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst R Dave R Dave R Dave R Dave <br /> MS/MSD # 981 1 H7601 9811 H7601 9811 H7601 98111-171501 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 11/30/98 11/30/98 11/30/98 11/30/96 <br /> Analyzed Date 11/30/98 11/30/98 11/30/98 11/30/96 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 1 0 mg/L 1 0 mg/1- 1 0 mg/L 1 0 mg/L <br /> Result 1 1 1 1 1 1 1 1 <br /> MS % Recovery 110 110 110 110 <br /> Dup Result 11 1 1 10 10 <br /> MSD % Recov 110 110 100 100 <br /> RPD 00 00 95 95 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS # LCS113098 LCS113098 LCS113098 LCS113098 <br /> Prepared Date 11/30/98 11/30/98 11/30/98 11/30/98 <br /> Analyzed Date 11/30/98 11/30/98 11/30/98 11/30/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Result 11 11 11 11 <br /> LCS %, Recov 110 110 110 110 <br /> 80-120 80-120 80-120 80-120 <br /> LCS 80-120 80-120 80-120 80-120 <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 /> SEQU I ALYTICAL preparation, and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> l fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> f 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 /> regory <br /> P lect Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9811H50 BLA 41> <br />