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Sequoia 6$0 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> `« '1 404 N Wiget lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)911-0100 <br /> q1W Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033/ 981109-T2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Christine Lillie Work Order# 9811696-01 Reported Dec 1, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME111298601OMDA ME111298601OMDA ME111298601OMDA ME111298601OMDA <br /> Analy 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# 981169601 981169601 981169601 981169601 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 11/12/98 11/12/98 11/12/98 11/12/98 <br /> Analyzed Date 11/13/98 11/13/98 11/13/98 11/13/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 10 10 10 10 <br /> MS % Recovery 100 100 100 100 <br /> Dup Result 1 1 10 10 10 <br /> MSD % Recov 110 100 100 100 <br /> RPD 95 00 00 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS # LCS111298 LCS111298 LCS111298 LCS111298 <br /> Prepared Date 11/12/98 11/12/98 11/12/98 11/12/98 <br /> Analyzed Date 11/13/98 11/13/98 11/13/98 11/13/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Result 1 1 10 1 0 1 1 <br /> LCS % Recov 110 100 100 110 <br /> 80-120 80-120 8x120 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 /> WWSEQU1051A ICAL 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 LC5 recovery is to be used to validate the batch <br /> r **MS=Matrix Spike, MSD=MS Duplicate,RPO=Relative% Difference 9811696 BLA <4> <br />