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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 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc~~A Client Project ID Chevron 9-2033 /961125-A1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9611 H98-01 Reported Dec 11, 19% <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Beryllium Cadmium Chromium Nickel <br /> QC Batch#: ME120596601OMDA ME120596601OMDA ME120596601OMDA ME120596601OMDA <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst C Medefesser C Medefesser C Medefesser C Medefesser <br /> MS/MSD # 9611 E8501 9611 E8501 9611 E8501 9611 E8501 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 12/5/96 12/5/96 12/5/96 12/5/96 <br /> Analyzed Date. 12/5/96 12/5/96 12/5/96 12/5/96 <br /> Instrument 1 D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conic Spiked 10 mg/L 10 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 097 094 094 092 <br /> • MS % Recovery 97 94 94 92 <br /> Dup Result. 097 094 094 091 <br /> MSD % Recov : 97 94 94 91 <br /> RPD. 00 00 00 11 <br /> RPD Limit 0-20 0-20 0-20 020 <br /> LCS # BLK120596 BLK120596 BLK120596 BLK120596 <br /> Prepared Date 12/5/96 12/5/96 12/5/96 12/5/96 <br /> Analyzed Date 12/5/96 12/5/96 12/5/96 12/5/96 <br /> Instrument I D #. MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked, 10 mg/L 10 mg/L 1 0 mg/L 10 mg/L <br /> LCS Result: 10 10 10 098 _ <br /> LCS %Recov : 100 100 100 98 <br /> MS/MSD <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 /> S U IA 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 If <br /> The reoovery 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 /> Pg <br /> Pr ct anager "MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9611H98 SLA 42> <br />