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Sequoia 680 Caeake Drive Redwood City CA 94063 0650)364-9600 FAX(650)364-9233 <br /> 'j! 1404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> T <br /> Analytical <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-01Q0 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Shelf 341 East Main St <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9810730-01 Reported Oct 22, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> QC Batch# GC1016981SHSHSB GC1016981SHSHSB GC1016981SHSHS9 <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst: T Sorokin T Sorokin T Sorokin <br /> MS/MSD # 981074217 981074217 981074217 <br /> Sample Conc. N D N D N D <br /> Prepared Date: 10/15/98 14/15/98 10/15/98 <br /> Analyzed Date 10/15/98 10/15/98 10/15/98 <br /> Instrument I D # - GCv1 GCv1 GCv1 " <br /> Conc Spiked. 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 72 84, 8 7 <br /> MS % Recovery 90 105 109 <br /> Dup Result 70 81 s 5 <br /> MSD % Recov .. 88 101 106 <br /> RPD 28 36 23 <br /> 1312D-Limit. o-So 0-50 0-50 <br /> LCS #: LCS101698 LCS101698 LOSIO1698 <br /> Prepared Date 10/16/98 10/16/98 10/16/98 <br /> Analyzed Date: 10/16/98 10/16/98 10/16/98 <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 70 75 77 <br /> LCS% Recov.. 88 94 96 <br /> 50-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br />__ _ _ _ ­--- preparation, <br /> LCS is a control sample of known,intenferent-free matrix that is analyzed using the same reagents,- -- <br /> $E O A LYTICAL T preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> i/ 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 /> Peg y her <br /> Proj p Manager MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative% Difference 9810730 BLA <2> <br />