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Sequoia680 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 /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(9t6)921 0100 <br /> Blaine Tech Services,+Inc Client Project ID Chevron 9-1848/970826-T2 h <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9708F78 -01, 03-04 Reported Sep 11, 1997 <br /> + r 4 yr r v n 4 ♦+ .. V n{ r + ++{ <br /> + r +! !1 ! t G n V t V } n <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GCO90297BTEX03A GCO90297BTEX03A GC090297BTEX03A GCO902978TEX03A GCO90297BTEX03A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA S015M <br /> Prep Method EPA 5030 EPA$030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst A.Miraftab A Miraftab A.Miraftab A.Miraftab A Miraftab <br /> MS/MSD # 9708C7107 970807107 9708C7107 9708C7107 9708C7107 <br /> Sample Cone N D N D N D N D N D <br /> Prepared Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Analyzed Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone. Spiked long/L 10ug/L 10yg/L 30ug/L 60ug/L <br /> Result 98 96 97 28 72 <br /> MS %Recovery 98 96 97 93 120 <br /> ❑Up Result 99 97 98 27 72 <br /> MSD % Recov 99 97 98 90 120 <br /> RPD 10 10 10 36 00 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS# BLK090297 BLK090297 BLK090297 BLK090297 BLK090297 <br /> Prepared Date 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Analyzed Date: 9/2/97 9/2/97 9/2/97 9/2/97 9/2/97 <br /> Instrument I D #• GCHP3 GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone Spiked. 10ug/L 10ug/L 10ug/L 30ug/L 60ug/L <br /> LCS Result* 91 89 89 25 66 <br /> LCS % Recov.. 91 89 89 83 110 <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 /> Please Note <br /> The LCS is a control sample of known,interfereni-free matrix that is analyzed using the same reagents, <br /> S 0 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 /> interference,the LCS recovery is to be used to validate the batch <br /> e Penner <br /> o�ect Manager **MS=Matnx Spike, MSD=MS Duplicate,RPD=Relative%Difference 9708F78 BLA <I> <br />