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680 Chesapeake Drive RedwoodCary CA 94063 -(650)364-96aO FAX(650)364-W3-3-- <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> a- ) _ 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)79Z-1865 FAX(707' ,792'}0342 <br /> -Blaine Tech Services, Inc Client Project ID Shell 6131 Pacific Ave <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9805F44-06-10 Reported Jun 11, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte MTBE <br /> CC Batch# MS052998MTBEF3A <br /> Analy Method____EP 8260___ <br /> Prep Method NA <br /> Analyst E Manuel <br /> MS/MSD # 9805 F1 101 <br /> Sample Conc 62 <br /> Prepared Date NA <br /> Analyzed Date 5/29/98 <br /> Instrument I D # F3 <br /> Conc Spiked 50ug/L <br /> Result 63 <br /> MS % Recovery 113 <br /> Dup Result 63 - <br /> MSD % Recov 113 <br /> RPD 00 <br /> RPD Limit 0-25 <br /> LCS-# —Lcs052998 — -- T-- --- — --- - --- T- -- <br /> Prepared Date - —N A — — - — --- - --- - - - <br /> Analyzed Date 5/29/98 <br /> Instrument I D # F3 <br /> Conc Spiked 50ug/L <br /> LCS Result 48 <br /> LCS % Recov 96 <br /> fi0-140 <br /> LCS 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that 1s analyzed using the same reagents, <br /> ZEGranager <br /> YTICAL 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 /> **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9805F44 BLA <3> <br />