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Sequoia 690 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 /> -,ll,)- Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /971117-M2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9711 C66-01 Reported Dec 10, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel Lead <br /> QC Batch# ME1201976010MDA ME120197601OMDA ME120197601OMDA ME120197601OMDA ME112697700OMDA <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 239 2 <br /> Prep Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 EPA 3020 <br /> Analyst T Sears T Sears T Sears T Sears R Butler <br /> M S/MSD # 971196304 971196304 971196304 971196304 9711 B5201 <br /> Sample Cone N D N D 0010 N D 31 <br /> Prepared Date 12/1/97 12/1/97 12/1/97 12/1/97 11/26/97 <br /> Analyzed Date 12/2/97 12/2/97 12/2/97 12/2/97 12/1/97 <br /> Instrument I D # MTJA5 MTJAS MTJA5 MTJA5 MTJA3 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L 50Ng/L <br /> Result 11 10 10 11 68 <br /> • MS % Recovery 110 100 100 110 74 <br /> Dup Result 10 10 10 10 69 <br /> MSD % Recov 100 100 100 100 76 <br /> RPD 95 00 00 95 15 <br /> RPD Limit 020 020 020 020 0-20 <br /> LCS # BLK120197 BLK120197 BLK120197 BLK120197 BLK112697 <br /> Prepared Date 12/1/97 12/1/97 12/1/97 12/1/97 11/26/97 <br /> Analyzed Date 12/2/97 12/2/97 12/2/97 12/2/97 12/1/97 <br /> Instrument I D #• MTJA2 MTJA2 MTJA2 MTJA2 MTJA3 <br /> Cone Spiked 10 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L 50ug/L <br /> LCS Result 10 10 10 10 48 <br /> LCS %Recov 100 100 100 100 96 <br /> 80-120 80.120 80-120 80-120 75-125 <br /> LCS 80-120 80-120 80-120 80120 80-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-fres matrix that is analyzed using the same reagents, <br /> �VPePenner <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 tt <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 /> er **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9711066 BLA <2> <br />