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---- ------- ---------- <br /> ---------- - <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 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 95934 (916) 921-9600 FAX(916)921-0100 <br /> .. .. ..... . .. <br /> .............. ................ .. <br /> ............ <br /> Smith Environmental Client Project I D: StoCkfdh 8R11­h`­`da'n%a­I <br /> :X'....'1260 Graphics Drive Matrix. Liquid <br /> ::.'Modesto, CA 95351-1502 <br /> :':'Attention: Jeanne Homsey -01, 02, 03 Reported- Oct 20, 1997 <br /> Work Order#: 9710270 <br /> ................................. <br /> ........ ....... .... <br /> ..................... .. .... ..... <br /> ... ........ . .... ..... ... <br /> ........................................... ................................ .. ... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte., Diesel <br /> OC Batch#: GC101097OGBPEXZ <br /> Analy. Method: EPA 80 1 5M <br /> Prep. Method: EPA 3520 <br /> Analyst: G. Fish <br /> MS/MSD#: 9710400-03 <br /> Sample Cone.; 9400pg/L <br /> Prepared Date: 10/10/97 <br /> Analyzed Date: 10/17/97 <br /> Instrument LID.#: GCHP5A <br /> Cone. Spiked: 1000jug/L <br /> Result: 5500 <br /> MS % Recovery: -390 <br /> Dup. Result: 6400 <br /> MSD % Recov.: -300 <br /> RPD: 15.1 <br /> RPD Limit: 0-50 <br /> ............. . .. ................. <br /> .......... <br /> ............ <br /> LCS #: BLK101097ZS <br /> Prepared Date: 10/10/97 <br /> Analyzed Date: 10/17/97 <br /> Instrument I.D.#: GCHP53 <br /> Cone.Spiked: 10OOpg/L <br /> LCS Result: 900 <br /> LCS % Recov.: 90 <br /> MS/MSD 50-150 <br /> LCS 60-140 <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 /> .,SEQUOIA ANALYTICAL 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 /> —Effferference,the LCS recovery is to be used to validate the batch. <br /> Sheila Flynn <br /> Project Manage **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9710270.5SS <1> <br />