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r <br /> ������ 680 Chesapeake Drive Redwood City CA 94063 {650}364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Swte 8 Sacramento CA 95834 (916)921-9600 FAX(916)9ZI-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAX{707}792-0342 <br /> Sequoia Analytical- Petaluma Client Project 1D P903469 <br /> 1455 N McDowell Blvd Ste D Matrix Liquid <br /> Petaluma CA 94954 <br /> Attention Scott Forbes Work Order# 9903A82 01-05 Reported Apr 2, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-propanol <br /> QC Batch# GC032999ISHSHSB GC0329991SHSHSB GCO3299918HSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst M M M M M M <br /> MS/MSD# 9903A8204 9903A8204 9903A8204 <br /> Sample Conic N D ND ND <br /> Prepared Date 3/29/99 3/29/99 3/29/99 <br /> Analyzed Date 3/29/99 3/29/99 3/29/99 <br /> Instrument l D # GCV1 GCV1 GCV11 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 79 89 91 <br /> MS %Recovery 99 111 114 <br /> Dup Result 81 92 96 <br /> MSD % Recov 101 115 120 <br /> RPD 25 33 53 <br /> RPD Limit 0-50 0-50 050 <br /> LCS # LCS032999 LCS032999 LCS032999 <br /> Prepared Date 3/29/99 3/29/99 3/29/99 <br /> Analyzed Date 3/29/99 3/29/99 3/29/99 <br /> Instrument I D.# GCV1 GCV1 GCV1 <br /> Conic Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result 72 80 82 <br /> LCS % Recov 90 100 103 <br /> LCS <br /> Control Limits 70-130 70-130 70-130 <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 /> 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 /> id A PS;�gfte <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9903A82 SSS <1> <br />