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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N u'L6et Lane Walnut Creek CA 94598 (510) 988 9600 FkX(510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 F-kX (916) 921 0100 <br /> 40 <br /> Blaine Tech Services, inc Client Project ID Shell Tracy/970605-K2 <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9706470-03, 05 Reported Jun 19, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> OC Batch# GCO61197BTEX06A GCO61197BTEX06A GC061197BTEXO6A GCO61197BTEX06A GCO61197BTEX06A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst A Porter A. Porter A. Porter A Porter A Porter <br /> MS/MSD#. 970617401 970617401 970617401 970617401 970617401 <br /> Sample Cone N D N D N D N D N D <br /> Prepared Date 6/11/97 6/11/97 6/11/97 6/11/97 6/11/97 <br /> Analyzed Date 6/11/97 6/11/97 6/11/97 6/11/97 6/11/97 <br /> Instrument I D # GCHP6 GCHP6 GCHP6 GCHP6 GGHP6 <br /> Cone Spiked 10ug/L 10ug/L 10ug/L 30ug/L 60ug/L <br /> Result- 10 97 9 8 28 65 <br /> % Recovery 100 97 98 93 108 <br /> Dup Result 93 88 8 9 25 60 <br /> MSD % Recov 93 88 89 83 100 <br /> RPD 73 97 96 11 80 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS # BLK061197 BLK061197 BLK061197 BLK061197 BLK061197 <br /> Prepared Date 6/11/97 6/11/97 6/11/97 6/11/97 6/11/97 <br /> Analyzed Date 6/11/97 6/11/97 6/11/97 6/11/97 6/11/97 <br /> Instrument I D # GCHP6 GCHP6 GCHP6 GCHP6 GCHP6 <br /> Cone Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L 60 ug/L <br /> LCS Result 11 10 10 30 69 <br /> LCS % Recov 110 100 100 100 115 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> LICALpreparatton, <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> te <br /> ANAL and anal lcal methods employed for the samples The matrix spike is an aliquot of sample <br /> >there <br /> with k quantities of specific compounds and subjected to the entire analytical procedure If <br /> of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> nce,the LCS recovery is to be used to validate the batch <br /> erManager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9706470 BLA <2> <br />