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Sequoia 680 Chesapeake Dnve Redwood GM CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-%00 FAX(510) 988-9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> Blaine Tech Services,JInc Client Proled ID Shell Stockton/971202-1-1 <br /> n 1680 Rogers Ave Matrix Liquid <br /> } <br /> ,San Jose, CA 95112 <br /> 'Attention Fran Thee Work Order# 9712358-01-09, 11, 9712360-12-14 Reported Dec 31, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> OC Batch# GC1208971SHSHSB GC1208971SHSHSB GC1208971SHSHSB <br /> Anally Method ISHS EPA 8020 EPA 8020 <br /> Prep Method HS HS HS <br /> Analyst. T Tran T Tran T Tran <br /> MS/MSD #: 9711E9402 9711E9402 9711E9402 <br /> Sample Conc : N D N D N D <br /> Prepared Date: 12/8/97 12/8/97 12/8/97 <br /> Analyzed Date 12/8/97 12/8/97 12/8/97 <br /> Instrument I.D # GCV1 GCV1 GCV1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result so 84 8 2 <br /> MS % Recovery 100 105 103 <br /> Dup Result 8 4 86 8 3 <br /> MSD % Recov • 105 108 104 <br /> RPD 49 24 12 <br /> RPD-Limit �0-50 0-500-50 -- -- -- ----- -- --- -- - <br /> LCS # 13LK120897 BLK120897 BLK120897 <br /> Prepared Date 12/8/97 12/8/97 12/8/97 <br /> Analyzed Date 12/8/97 12/8/97 12/8/97 <br /> Instrument I.D # GCV1 GCV1 GCV1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/I_ <br /> LCS Result 7 9 82 81 <br /> LCS % Recov. 99 103 101 <br /> LCS <br /> Control Limits 50-150 50-150 50-150 <br /> Please Dote <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagen <br /> SCIAALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sampfortified with known quantities of specific compounds and subjected to the entire analytical procedureIfthe 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 /> P <br /> Pr ect anager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9712358 BLA <10> <br />