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Sequoia680 Chesapeake Dnvc Redwood CAM CA 94063 (650) 364 9600 FAX(650)364 9333 <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 olbo <br /> Client Pro ect ID Shell Stockton / 980210-A2 <br /> Blaine Tech Services, Inc � 1 <br /> 1680 Rogers Ave Matrix Liquid <br /> ' San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9802738 -01-04, 06-07 Reported Feb 27, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> CSC Batch# GCO22098802002A GCO22098802002A GCO22098802002A GCO22098802002A GCO22098802002A <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 K Nill K Nill K Nill K Nil! K Nill <br /> MS/MSD# 8020668 8020668 8020668 8020668 8020668 <br /> Sample Conc ND N D NO NO N D <br /> Prepared Date 2/20/98 2/20/98 2/20/98 2/20/98 2/20/98 <br /> Analyzed Date 2/20/98 2/20/98 2/20/98 2/20/98 2/20/98 <br /> Instrument I D # HP2 HP2 HP2 HP2 HP2 <br /> Conc. Spiked 20 Mg/L 20 ug/L 20 pg/L 60lig/L 350 pg/L <br /> Result 18 19 20 62 330 <br /> MS % Recovery 90 95 100 103 94 <br /> Dup Result 21 22 22 68 320 <br /> MSD % Recov 105 110 110 113 91 <br /> RPD 15 15 95 92 31 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-50 <br /> LCS # LCS02-2098 LCS022098 LC8022098 LCS022098 LCS022098 <br /> Prepared Date 2/20/98 2/20/98 2/20/98 2/20/98 2/20/98 <br /> Analyzed Date. 2/20/98 2/20/98 2/20/98 2/20/98 2/20/98 <br /> Instrument I D # HP2 HP2 HP2 HP2 HP2 <br /> Conc Spiked 20ug/L 20yg/L 20ug/L 60pg/L 350lag/L <br /> LCS Result 19 20 21 64 350 <br /> LCS % Recov 95 100 105 107 100 <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 /> 7eggy <br /> I ANALYTICAL The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> 1 i 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 <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 /> Penner <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9802738 BLA <1> <br />