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Sequoia 680 Chesapeake Drive Redwood GM CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N W,get Lane Walnut Creek,CA 94598 (510) 988 96W 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 ID Chevron 9-2033, 950815-H1 <br /> 985 Timothy Drive Matrix Liquid <br /> 'San Jose, CA 95133 <br /> nAttention Jim Keller Work Order# 9508693-01, 03 Reported Aug 25, 1995 . <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GCO81895BTEX17B GC081895BTEX17B GCO81895BTEX17B GCO81895BTEX17B <br /> Analy Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst J Woo J Woo J Woo J Woo <br /> MS/MSD# 9508A1802 950BA1802 950BA1602 9508AI802 <br /> Sample Cone. N D N D N D N D <br /> Prepared Date 8/19/95 8/19/95 8/19/95 8/19/95 <br /> Analyzed Date. 8/19/95 8/19/95 8/19/95 8/19/x5 <br /> Instrument I D #. GCHP17 GCHP17 GCHP17 GCHP17 <br /> Cone Spiked- 10ug/L 10pg/L 10ug/L 30Ng/L <br /> Result. 11 11 12 34 <br /> �IVIS % Recovery. 110 110 120 113 <br /> Dup. Result. 12 11 12 34 <br /> MSD % Recov 120 110 120 113 <br /> RPD 87 00 00 00 <br /> APD Limit 050 0-50 0-500 050 <br /> LCS #: - - - - <br /> Prepared Date- - - - - <br /> Analyzed Date: - - - <br /> Instrument I D #. - <br /> Cone. Spiked- <br /> LCS Result- - - - - <br /> LCS% Recov. - - <br /> MS/MSD <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-tree matrix that is analyzed using the same reagents, <br /> WTgkenner <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 tall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9508893 BLA <3> <br />