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,_rte 680 Chesapeake Drtve Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> L/1 <br /> Sequoia 404 N Wlget Lane Walnut Creek,CA 94598 (925)9a8-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Shell 341 East Main St , Ripon <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Francis Thie Work Order# 9901247 -01 Reported Feb 3, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# 9010116 9010116 9010116 9010116 <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst - - - <br /> MS/MSD # 9010116MS1 90101161VIS1 9010116MS1 90101116101811 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 1/11/99 1/11/99 1/11/99 1/11/99 <br /> Analyzed Date 1/11/99 1/11/99 1/11/99 1/11/99 <br /> Instrument I D # - - - - <br /> Conc. Spiked 10 ug/L 10 Ng/L 10 ug/L 30 ug/L <br /> Result 989 949 102 30 <br /> IVIS% Recovery 989 949 102 100 <br /> Dup Result 10 959 101 301 <br /> MSD % Recov 100 959 101 100 <br /> RPD 1 11 105 0 985 0 333 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> v t v <br /> LCS # LCS011199 LCS011199 1-CS011199 LC8011199 <br /> Prepared Date 1/11/99 1/11/99 1/11/99 1/11/99 <br /> Analyzed Date 1/11/99 1/11/99 1/11/99 1/11/99 <br /> Instrument I D.# - - - - <br /> ConC Spiked 10yg/L 10,tg/L 10Ng/L 30Ng/L <br /> LCS Result 102 101 10 30 <br /> LCS % Recov 102 101 100 100 <br /> MSMSD 50-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> SIEOIJOIA ANALYTICAL yThe LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> Elap#1624 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 0 <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 /> Pe nn <br /> Prig ect M7nager **MS=Matrix Spike,MSD=NIS Duplicate, RPD=Relative%Difference 9901247 BLA <1> <br />