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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 %00 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> tom" r . rrw n k r r r,.vr 4rvr yr r+.+< rrr+-++. 4 •r4 +- r r ,r ,. <br /> }i Blaine Tech$ervices,`incr 'CllentmProlect+ ID r++� Shellr Stockton4 /971009-Gi xr> <br /> 1680 Rogers Ave Matrix Liquid v <br /> " San.lose, CA 95112 <br /> -Attention Fran Thie Work Order# 9710591-01-06, 08 Reported Oct 28, 1997 <br /> uk w <br /> OUALITY CONTROL DATA REPORT <br /> Analyte MTBE <br /> OC Batch#: MS101797MTBEF2A <br /> Analy. Method: EPA 8260 <br /> Prep. Method. N.A. <br /> Analyst L.Zhu <br /> MS/MSD #. 971077806 <br /> Sample Conc: N D <br /> Prepared Date: 10/17/97 <br /> Analyzed Date 10/17/97 <br /> Instrument I D.# F2 <br /> Conc Spiked 50pg/L <br /> Result. 64 <br /> MS % Recovery: 128 <br /> Dup. Result: 59 <br /> MSD % Recov.. 118 <br /> RPD 81 <br /> RPD Limit `0-25 <br /> LCS #. vMB10i897 <br /> Prepared Date: 10/18/97 <br /> Analyzed Date: 10/18/97 <br /> Instrument 1.1) #• F2 <br /> Conc. Spiked: 50pg/L <br /> LCS Result: 49 <br /> LCS % Recov.: 98 <br /> 60-140 <br /> LCS 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 reagen <br /> SED ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of samp <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 /> SO <br /> Pen er <br /> Pr ct Manager **MS=Matnx Spike,MSD=MS Duplicate,RPD=Relatroe%Difference 9710591 BLA <5> <br />