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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 /> llcp Analytical 819 Striker Avenue Swte 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-4183/960222-Ll <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 96021389 -03 Reported Feb 27, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME0223966010MDA ME0223966010MDA ME0223966010MDA ME022396601OMDA <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 O'Donnell S O'Donnell S O Donnell S O Donnell <br /> MS/MSD # 9602/34801 9602D4801 9602D4801 960204801 <br /> Sample Cone ND N D N D N D <br /> Prepared Date 2/23/96 2/23/96 2/23/96 2/23/96 <br /> Analyzed Date 2/23/96 2/23/96 2/23/96 2/23/96 <br /> Instrument I D # MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> Result 10 098 10 098 <br /> MS %Recovery 100 98 300 98 <br /> Dup Result 10 099 10 099 <br /> MSD % Recov 100 99 100 99 <br /> RPD 00 10 00 10 <br /> RPD Limit 0-30 0-30 0-30 0.30 <br /> LCS# BLK022396 BLK022396 BLK022396 BLK022396 <br /> Prepared Date 2/23/96 2/23/96 2/23/96 2/23/96 <br /> Analyzed Date, 2/23/96 2/23/96 2/23/96 2/23/96 <br /> Instrument I D #. MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked: 10 mg/L 10 mg/L 10 mg/L 1 0 mg/L <br /> LCS Result. 10 10 10 10 <br /> LCS %Recov 100 100 100 100 <br /> M M D <br /> LCS 75-125 75-125 75-125 75-125 <br /> Control Limits <br /> Please Note <br /> lbTheLCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> Wegg <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 n <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 /> ger *"MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9602D89 BLA c 1> <br />