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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bata Avenue,Suite L Concord CA 94520 (510) 686-9600 FAX510 <br /> ( )686 9689 <br /> Analytical 8 t 9 Stnker Avenue Suite 0 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r <br /> RESNA r ,. ,., <br /> Client Project ID F7132 94, Qulkstop 132 <br /> 42501 Albrae Street Matrix Liquid <br /> Fremont, CA 94538 <br /> Attention Rich Garlow OC Sample Group 9408253 -01-2 Reported Aura 16, 19944 <br /> ^^^'....... ,. .f.,m , mss~to n <br /> + $xvyr4 4 S.J v n1}}vYJ v 'v. r v r •t x4 rS41..E.+.{r.L 4 x. 4nun rr 4.. L'—� -inn z'� r` S�."02?w'cat��.r wbG�2a,"anwR <br /> QUALITY CONTROL DATA REPORT <br /> I ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method. EPA 8020 EPA 8020 EPA 8020 EPA 6020 <br /> Analyst: J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD <br />' Batch#: 940815001 940815001 940815001 940815001 <br /> Date Prepared: - _ - <br /> Date Analyzed: 8/8/94 8/8/94 8/8/94 6/8/94 <br /> Instrument LD #: GCHP-20 GCHP20 GCHP-20 GCHP-20 <br /> Corte Spiked: 10pg/L 10,ug/L 10pg/L 30ug/L <br /> Matrix Spike <br /> %Recovery. 95 95 95 93 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery- 100 100 100 100 <br /> Relative% <br /> Difference 51 51 51 73 <br /> LCS Batch# <br /> Date Prepared <br /> Date Analyzed. <br /> Instrument I D #- <br /> LCS % - <br /> Recovery <br />' % Recovery <br /> Control Limits. 71-133 72-128 72.130 71.120 <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 /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager 9408253 RES <1> <br />