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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Ci) 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> X117 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-%00 FAX(916) 921 0100 <br /> ,Blaine Tech Services, Inc Client Project ID Shelf Stockton/ 971222-F1 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9712F01-01 Reported Jan 12, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Methanol <br /> QC Batch## GC1230971SHSHSB <br /> Analy Method. ISHS <br /> Prep Method. HS <br /> Analyst T Tran <br /> MS/MSD # 9712D1505 <br /> Sample Conc . N D <br /> Prepared Date. 12/30/97 <br /> Analyzed Date 12/30/97 <br /> Instrument I D # GCv1 <br /> Conc. Spiked s 0 mg/L <br /> Result- 8 7 <br /> MS % Recovery. 109 <br /> Dup Result 91 <br /> MSD % Recov - 114 <br /> RPD- 4 5 <br /> RPD Limit 50 <br /> LCS #: BLK123097 <br /> Prepared Date 12/30/97 <br /> Analyzed Date 12/30/97 <br /> Instrument I D.# GCv1 <br /> Conc Spiked 8 0 mg/L <br /> LCS Result: 85 <br /> LCS % Recov.• 106 <br /> 50-150 <br /> LCS 50-150 <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 />"EQUOI ALYTICAL 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 /> Pegg e <br /> Prole arnager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9712F01 SLA <4> <br />