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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N WISet Lane Walnut Creek CA 94598 (510)988-9600 FAX(910)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> a- )w Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Proieci ID Shell 2575 CountryrClub <br /> ,1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> :Attention Fran Thie Work Order# 98041-107-04, 07, 9804H08-10-18 Reported May 13, 1998 <br /> ry .rn } N .v . n 1 . w rrn .. � rr ' r r rh . r r c. ♦.Y Sp. <br /> QUALITMONTROL DATA REPORT <br /> Analyte: Methanol Ethanol Iso-Propanol <br /> QC Batch#: G00428981SHSHSB G00428981SHSHSB GC0428981SHSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep. Method- HS HS HS <br /> Analyst T Sorokin T Sorokin T Sorokin <br /> MS/MSD #. 9804E3110 9804E3110 9804E3110 <br /> Sample Conc N D N D N D <br /> Prepared Date 4/28/98 4/28/98 4/28/98 <br /> Analyzed Date 4/28/98 4/28/98 4/28/98 <br /> Instrument I D # GCV1 GCV1 GCV1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 7 5 9 0 9 2 <br /> MS % Recovery 94 113 115 <br /> Dup Result 69 80 79 <br /> MSD % Recov 86 100 99 <br /> RPD 83 12 15 <br /> RPD Limit. 0-50 0-50 0-50 <br /> LCS # 13LK042998 BLK042998 BLK042998 <br /> Prepared Date 4/29/98 4/29/98 4/29/98 <br /> Analyzed Date 4/29/98 4/29/98 4/29/98 <br /> Instrument I D.# GCV1 GCV1 GCV1 <br /> Conc. Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result: 6 7 8 2 75 <br /> LCS % Recov • 84 103 94 <br /> 54-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <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 /> SB I NALYTICAL 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 /> P gg Penner <br /> P j t Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9804H07 SLA <2> <br /> Za <br />