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• / \ Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> �,•��r,� 1900 Sates Avenue,Suite L Concord CA 94520 (510) 686 9600 FAX (510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> s Blaine Tech Services, Inc Client Project10950223-K2, Chevron S221-5 v N YY N <br /> ' 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Kellerh A Work Order# 9502F29 -01-03 Reported Mar 3, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GCO22795BTEX07A GCO22795BTEX07A GG022795STEX07A GCO22795STEX07A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Pre Method- EPA 5030 EPA_NM EPA 5030 EPA 5030 <br /> Analyst: M Balani M Balatti M Batatti M Balattl <br /> MS/MSD #: 9502B8408 950288408 9502B8408 9502B8408 <br /> Sample Conic N D N D N D N D <br /> Prepared Date: 2/27/95 2/27/95 2/27/95 2/27/95 <br /> Analyzed Date 2/27/95 2/27/95 2/27/95 2/27/95 <br /> Instrument I D #. GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc Spiked. 10ug/L 10pg/L 10ug/L 30Ng/L <br /> Result, 10 10 10 31 <br /> MS % Recovery- 100 100 100 103 <br /> . Dup Result: 10 10 10 30 <br /> MSD %Recov 100 100 100 100 <br /> RPD. 00 00 00 33 <br /> RPD Limit 0-50 0-50 0-50 0 50 <br /> LCS # <br /> Prepared Date. <br /> Analyzed Date: <br /> Instrument I D #• - - <br /> Conc Spiked. <br /> LCS Result: - <br /> LCS%Recov.: <br /> 71-133 72-128 72-130 71-120 <br /> LCS <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 /> .SE A 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 tf <br /> the recovery of analytes from the matrix spike does not fall within specified control limas due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> n in <br /> t nager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative% Difference 9502F29 BLA <I> <br />