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Sequoia <br /> C L.�eq y oia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(659)364-9233 Y <br /> 404 N WLget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 I <br /> Analytical 819 Striker Avenue,Suite 8 Sacramcnto,CA 95834 (916) 921 9600 FAX(916)921.A1oo <br /> .Blaine Tech Services, Inc Clierit Project ID Shell Stockton / 980210-A1 <br /> 1880 Rogers Ave Matrix Liquid, <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9802737-03 Reported Feb 27, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Methanol E=thanol Iso-Propanol <br /> - QC_Batch#:_GCO217981SHSHSA_GCO217981SHSHSA GCO217981SHSHSA <br /> Analy Method ISHS ISHS� ISHS <br /> Prep. Method HS HS HS <br /> Analyst T Tran T Tran T Tran <br /> MS/MSD #. 980273702 980273702 980273702 <br /> Sample Conc : N D N D N D <br /> Prepared Date 2/17/98 2/17/98 2/17/98 <br /> Analyzed Date 2/17/98 2/17/98 2/17/98 <br /> Instrument I D #• GCV1 GCV1 GCV1 w <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result: 57 61 59 <br /> MS % Recovery: 71 76 74 <br /> Dup Result: 59 68 65 W - - <br /> MSD % Recov : 74 85 81 <br /> RPD' 34 11 97 <br /> RPD Limit 0-50 0-50 0-50 <br /> - <br /> --LCS # BLK021898 BLK021898 f BLK021898 - <br /> Prepared DateT�- 2/17/98 2/17/98 2/17/98 - <br /> Analyzed Date: 2/17/98 2/17/98 2/17/98 <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: 61 67 65 <br /> LCS % Recov .. 76 84 81 <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 /> 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 <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 /> Pe y enner <br /> Prni MAnnnar **i1AC-AAn+r,v Cn,ira Mqn=Mq rli iph %+a PPr1=Gain+,,,a 0L,r]iffaranra ill 6 1`3 <br /> i <br />