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Sequoia 680 Chesapeake Dave Redwood City,CA 9406, (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(9 16)921 0100 <br /> Smith Environmental Client Project ID 94-334, KOK Realty <br /> 1250 Graphics Drive Matrix Liquid <br /> Modesto CA 95351-1502 <br /> Attention Jeanne Homsey Work Order # 9511A49 -01 Reported Nov 30, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> OC Batch# GC1116950HBPEXZ <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3520 <br /> Analyst B Ali <br /> MS/MSD # <br /> Sample Conc <br /> Prepared Date <br /> Analyzed Date <br /> Instrument I D # <br /> Conc Spiked <br /> Result <br /> MS % Recovery <br /> 0Dup Result <br /> MSD % Recov <br /> RPD <br /> RPD Limit <br /> LCS # BLK111695 <br /> Prepared Date 11/16/95 <br /> Analyzed Date 11/17/95 <br /> Instrument I D # GCHP4 <br /> Conc Spiked 1000ug/L <br /> LCS Result 980 <br /> LCS % Recov 98 <br /> MS/MSD <br /> LCS 38-122 <br /> Control Limits <br /> Please!`late <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> A&EQUOIA ANALYTICAL preparation and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> } _ cpfortified with known quantibes of specific compounds and subjected to the enure analytical procedure If <br /> 1 jt— 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 /> Vickie Vague Clark <br /> Project Manager **MS=Matrix Spike MSD=MS Duplicate,RPD a Relative% Difference 9511 A49 SSS <1> <br />