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�Y' , 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 4114 N Wiget lAne Walnut Creek,CA 94598 (510)988-9600 FAX(510)988-9673 <br /> _ — Analytical 819 Stilker 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 /> 10 , <br /> Blaine Tech Services, Inc Client Project ID Shell 141 N EI Dorado <br /> 1680 Rogers Ave Matrix Liquid <br /> San .lose, CA 95112 <br /> Attention Fran Thie Work Order# 9804G89 -01-02 Reported May 18, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Gasoline <br /> QC Batch#. 701342735 <br /> Analy Method: EPA 8015M <br /> Prep Method EPA8020M <br /> Analyst - <br /> MS/MSD # BLK050498 <br /> Sample Conc . 2231 <br /> Prepared Date 5/4/98 <br /> Analyzed Date 5/4/98 <br /> Instrument I D # - <br /> Conc Spiked 1000,ug/L <br /> Result 9633 <br /> MS % Recovery 941 <br /> 0 Dup Result 9834 <br /> WiiSD % Recov : 961 <br /> RPD 21 <br /> RPD Limit 0-50 <br /> LCS #- LC8050498 <br /> Prepared Date. 5/4/98 <br /> Analyzed Date 5/4/98 <br /> Instrument LD # - <br /> Conc Spiked 1000/tg/L <br /> LCS Result 1022 <br /> LCS % Recov 102 <br /> 53-146 <br /> LCS 79-127 <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 /> IA 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 /> leg enner <br /> ro et Manager "`MS=Matrix Spike, MSO=MS Duplicate, RPD=Relative% Difference 9804G89 BLA a1> <br />