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Sequoia680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite$ Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Iwo <br /> Gettler Ryan/Geostrategies Client Prolect ID Former Unocal 2859, 280054 85 <br /> 6747 Sierra Court, Ste J Matnx Liquid <br /> Dublin, CA 94568 ' <br /> Attention Deanna Harding Work Order# 9803390-02-06 Reported Mar t7, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME030998601OMDC ME0309986010MDC ME030998601OMDC ME0309986010MDC <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst S LaBarron S LaBarron S LaBarron S LaSarron <br /> MS/MSD # 9803Z7202 980327202 980327202 980327202 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 3/9/98 3/9/98 3/9/98 3/9/98 <br /> Analyzed Date 3/9/98 3/9/98 3/9/98 3/9/98 <br /> Instrument I D # MTJA5 MTJA9 MTJA5 MTJA5 <br /> Conc Spiked 10 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 11 11 10 11 <br /> 46S % Recovery 110 110 100 110 <br /> Dup Result 10 11 10 10 <br /> MSD % Recov 100 110 100 100 <br /> RFD 95 00 00 95 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS r# OLK030998 BLK030998 BLK030998 BLK030998 <br /> Prepared Date 3/9/98 3/9/98 3/9/98 3/9/98 <br /> Analyzed Date 3/9/x8 3/9/98 3/9/98 3/9/98 <br /> Instrument 1.01 # 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 1 1 11 1 1 1 1 <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 1s a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> A EQUOIA 'AYTICAL preparation,and analytical methods employed for the samples The matrix spike 1s an aliquot of sampie <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 /> ory <br /> roj c Manager ""MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9803390 GET <4> <br />