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Sequoia 680 Chesapeake Dave Redwood City CA )364-9600 FAX(650)364-9233 <br /> 404 N W1get Lane Walnut Creek CA 945984598 (925{925}988-9600 FAX{425}988-9673 <br /> � Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project M Shell 2575 Country Club Blvd <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 98071-187-04, 98071-189-19-21 Reported Aug 20, 1998 <br /> QUALIT_Y_COINTROL DATA_REPORT <br /> Analyte, Methanol Ethanol iso-Propanol <br /> QC Batch# GC0803981SHSHSB G00803981SHSHSB GCO803981SHSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst T Sorokin T Sorokin T Sorokin <br /> MS/MSD # 98071-18502 9807H8502 98071-18502 <br /> Sample Conc N D N D N D <br /> Prepared Date 7/31/98 7/31/98 7/31/98 <br /> Analyzed Date` 7/31/98 7/31/98 7/31/98 <br /> Instrument I D # GCvi GCv1 GCv1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 87 10 11 <br /> MS % Recovery 109 125 138 <br /> Dup Result go 10 11 • <br /> MSD % Recov 113 125 138 <br /> RPD 34 00 00 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS # 13LK080398 BLK080398 BLK080398 <br /> Prepared Date 8/3/98 8/3/98 8/3/98 <br /> Analyzed Date. 8/3/98 8/3/98 8/3/98 <br /> Instrument LD #* GCv1 GCv1 GCvi <br /> Conc Spiked. 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result 8 3 9 0 95 <br /> LCS % Recov 104 113 119 <br /> 50-150 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 /> VogyALYTICAL 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 /> ner <br /> nager **MS=Matrix Spike, MSD=MS Duplicate, RPO=Relative%Difference 98071-187 BLA <10> <br />