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11 <br /> s:t� '� SeAnalytical <br /> 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9133 <br /> 1 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> }�,I,D Analytical 819 Str,ker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Gettjer FtyarV eostrategles r�Clie4ProlectrlD Unocal❑123%1034 Central Ave <br /> 6747 Sierra Court, Ste J Matrix Liquid <br /> Dublin, CA 94568 <br /> ,Attention Deanna Harding Work Order# 9803H06-05 Reported Apr 13, 1998 <br /> v v} v r r }r +n . rvv r ♦ ,} . .. .`i.. r♦ , v. i.,. . r r rJ. r, v v r v v. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Total Oil&Grease <br /> OC Batch-f# SP033098552000A <br /> Analy Method SM 5520B <br /> Prep Method SM 5520E <br /> Analyst P Cheung <br /> BS/BSD # BLK033098 <br /> Sample Conc N D <br /> Prepared Date 3/30/98 <br /> Analyzed Date- 3/31/98 <br /> Instrument I D.#' MANUAL <br /> Conc Spiked 20 mg/L <br /> Result 18 <br /> BS % Recovery 90 <br /> Dup Result 14 <br /> BSD % Recov 70 <br /> RPD 25 <br /> RPD Limit 0-30 <br /> LCS # LCS033098 <br /> Prepared Date 3/30/98 <br /> Analyzed Date: 3/31/98 <br /> Instrument I D # MANUAL <br /> Conc Spiked 20 mg/L <br /> LCS Result: 18 <br /> LCS % Recov : 90 <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 reagents, <br /> SEQUO A A LYTICAL 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 /> lr 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 /> oject Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 98031-106 GET <8> <br />