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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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine TeCh Services, Inc Client Project 1D Chevron 9-2033 /%0619-T1 f Y ry n <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9606B93 -01 Reported Jul 1, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> OC Batch# ME062696601OMDA ME062696601OMDA ME062696601OMDA ME062696601OMDA <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method: EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst R Butler R Butler R Butler R Butler <br /> MS/MSD#• 96WE1601 96ME1601 96WE1601 96WE1601 <br /> Sample Cone.: N D ND ND N D <br /> Prepared Date 6/26/96 6/26/96 6/26/96 6/26/96 <br /> Analyzed Date- 6/26/96 6/26/96 6/26/96 6/26/96 <br /> Instrument I.D.#. MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked- 10 mg/L 1 0 mg/L 10 mg/L 10 mg/L <br /> Result 094 091 092 091 <br /> MS % Recovery- 94 91 92 91 <br /> Dup Result 093 090 091 089 <br /> MSD %Recov 93 90 91 89 <br /> RPD: 11 11 11 22 <br /> RPD Limit- 0-20 0-20 0-20 0-20 <br /> LCS# BLK062696 BLK062696 BLK062696 BLK062696 <br /> Prepared Date. 6/26/96 6/26/96 6/26/96 6/26/96 <br /> Analyzed Date 6/26/96 6/26/96 6/26/96 6/26/96 <br /> Instrument I D # MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked: 1 0 mg/L 1 0 mg/L 10 mg/L 10 mg/L <br /> LCS Result 097 094 095 093 <br /> LCS% Recov 97 94 95 93 <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 /> SE OI ANALYTICAL 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 /> P interference,the LCS recovery is to be used to validate the batch <br /> rolect Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9606693 BLA <1> <br />