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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650}364'9233 <br /> 404 N Witget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> 15) <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (9i6)921 otoo <br /> Blaine Tech Services, Inc Client Project ID Shell Stockton /971117-M1 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 tr <br /> .Attention Fran Thie Work Order# 9711 F35-01, 03-09, 9711 F37-10 Reported Dec 16, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> QC Batch# GC1127971SHSHSA GC1127971SHSHSA GC1127971SHSHSA <br /> Analy. Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst T Tran T Tran T Tran <br /> MS/MSD# 9711C8304 9711C8304 9711138304 <br /> Sample Conc N D N D N D <br /> Prepared Date 11/27/97 11/27/97 11/27/97 <br /> Analyzed Date 11/27/97 11/27/97 11/27/97 <br /> Instrument I D # GCv1 GCv1 GCv1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 80 84 84 <br /> MS % Recovery 100 105 105 • <br /> Dup Result 81 87 89 <br /> MSD %Recov 101 109 111 <br /> RPD 12 35 58 _ <br /> HPD Limit 0-50 0-50 0-50 <br /> LCS # BLK112797 BLK112797 BLK112797 <br /> Prepared Date 11/27/97 11/27/97 11/27/97 <br /> Analyzed Date 11/27/97 11/27/97 11/27/97 <br /> Instrument I D.# GCvi GCv1 GCvi <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS. Result 79 84 81 <br /> LCS % Recov 99 105 101 <br /> 50-150 50-150 50-150 <br /> LCS 50-150 50-150 50-150 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> Wavd:k <br /> _ fortified with known quantities of specific compounds and sub)ected to the entire analytical procedure 1fthe recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> terference,the LCS recovery is to be used to validate the batch <br /> Peer <br /> Project Manage **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9711F35 BLA <5> <br />