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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) 988 9673 <br /> (D- Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> �Blalne Tech Services, Inc f Client Project ID Chevron 9-1918/960123-J2 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9601 F18-02-03, 05-07 Reported Feb 6, 1596 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Nitrate Sulfate <br /> OC Batch# IN0125963000ACB IN0125963000ACB <br /> Analy Method BPA 300 0 BPA 300 0 <br /> Prep Method N/A N/A <br /> Analyst S Lee S Lee <br /> MS/MSD # 9601 F2901 9601F2901 <br /> Sample Cone 100 100 <br /> Prepared Date 1/25/96 1/25/96 <br /> Analyzed Date 1/25/96 1/25/96 <br /> Instrument 1 D # INIC1 INIC1 <br /> Cone Spiked 10 mg/L 10 mg/L <br /> Result 100 110 <br /> �MS % Recovery 0 0 100 <br /> Dup Result 110 110 <br /> MSD % Recov 100 110 <br /> RPD 95 00 <br /> RPD Limit 0-30 0-30 <br /> LCS # LCS012596 LCS012596 <br /> Prepared Date 1/25/96 1/25/96 <br /> Analyzed Date 1/25/96 1/25/96 <br /> Instrument I D # INIC1 INIC1 <br /> Cone Spiked 10 mg/L 5 0 mg/L <br /> LCS Result 9 7 45 <br /> LCS % Recov 97 90 <br /> IVIS/MSD 70.130 70-130 <br /> LCS 90-110 90-110 <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 /> VbtManager <br /> ALYTICAL 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 /> 7Prol **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9601F18 BLA <2> <br />