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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)3G4-9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Analytical $19 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(9l6}921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 10 <br /> Project ID Shell 2575 Country Club <br /> Client Pro <br /> Blaine Tech Services, Inc 1 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> ,Attention Fran Thee Work Order# 9804H09-19-24 Reported May 13, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Methanol Ethanol Iso-Propanol <br /> QC Batch#: GCO429981SHSHSB G00429981SHSHSB GC0429981SHSHSS <br /> Analy Method. ISHS ISHS ISHS <br /> Prep. Method HS HS HS <br /> Analyst: T Sorakin T Sorokin T Sorokin <br /> MS/MSD # 9804E3110 9804E3110 9804E3110 <br /> Sample Conc : N D N D N D <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 /> Result 70 86 86 <br /> MS % Recovery. 88 108 108 <br /> Dup Result 64 75 74 <br /> MSD % Recov .. 80 94 93 <br /> RPD 90 14 15 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS#: ELK042998 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 70 83 81 <br /> LCS % Recov : 88 104 101 <br /> 50-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS 1s a control sample of known,interferent free matrix that 1s analyzed using the same reagents, <br /> SE 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 /> PgyPe <br /> P ect Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9804H07 BLA <3> <br />