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Se680 Chesapeake Drive Redwood City,CA 94063 (6501 364-9600 FAX(650)364-9233 <br /> quoia 404 K Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 9 Sacramento,CA 95834 (916) 921-91500 FAX(916)921-0100 <br /> ......... <br /> ..................... <br /> ........... <br /> .... .................................... <br /> ambna Client Pro ect ID: Shell 1267 Country Club Blvd. <br /> .".'270 Perkins Ave. Matrix: Solid <br /> Sonoma, CA 95476 <br /> eported: <br /> Work Order#: 9802F61-01-04 R Mar 11, 19 <br /> ,,,-Attention: Joe Neely <br /> .. ......... <br /> .......................................... <br /> .......... ....... <br /> % ........ <br /> .......... <br /> ...... ............... ..... .... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: MTBE <br /> QC Batch#: MS022398MTBEEKA <br /> Analy. Method: EPA 8260 <br /> Prep. Method: N.A. <br /> Analyst: M.Williams <br /> MS/MSD #: 9802C-9304 <br /> Sample Conc.: N.D. <br /> Prepared Date: 2/23/98 <br /> Analyzed Date: 2/24/98 <br /> Instrument I.D.#: F3 <br /> Conc. Spiked: 2500 jig/Kg <br /> Result: 2000 <br /> MS % Recovery: 80 <br /> L <br /> Dup. Result: 2000 <br /> MSD % Recov.: so <br /> RPD: 0.0 <br /> RPD Limit: 0i25 <br /> ........... <br /> ...........—... <br /> ............ <br /> ........... <br /> ................. <br /> ...................... <br /> ........................ <br /> LCS#: LCS022598 <br /> Prepared Date: 2/25/98 <br /> Analyzed Date: 2/25/98 <br /> Instrument I.D.#: F3 <br /> Conc. Spiked: 2500,ug/Kg <br /> LCS Result: 2000 <br /> LCS % Recov.: 80 <br /> MS/MSD 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 U <br /> sing the same reagents, <br /> SEQUO ALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> 4 <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 /> egory <br /> roj et Manager MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference :19802F61.CCC <2> <br />