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` 4 Sequoia 680 Chesapeake Dnve Redwood G <br /> ry,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686-%00 FAX(510)686 9689 <br /> Analytical 819 Stnkcr Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(9t6)921 0100 <br /> , <br /> ACilent Project ID + 0W0327 o0+knowles Prop <br /> 1710 Main Street Matra Liquid <br /> Escalon, CA 95324 <br /> Attention John Lane QC Sample Group 4E32108 Reported May 19, 1994', <br /> ntc...a cz}�{v wtira4 A a x• .v3 2` -, <br /> r v. ♦ Jx w i,.s r„ vrkr{G"n, ,54{}.�� vh-n \.v. v r.., xs n 5n5 .� ,hr,s..v w�W,.wrr+n x MKi,+nKw-nvai2s�i,nen^v.i•,7JiG v.\ env <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: J Fontcha J Fontcha J Fontcha J Fontcha <br /> MS/MSD <br /> Batch#: BLKD51294 BLK051294 BLK051294 BLK051294 <br /> Date Prepared. 5/12/94 5/12/94 5/12/94 5/12/94 <br /> Date Analyzed, 5/12/94 5/12/94 5/12/94 5/12/94 <br /> Instrument LD #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Conc. Spiked: 20ug/L 20ug/L 20pg/L 601yg/L <br /> Matrix Spike <br />. % Recovery: 100 100 95 98 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 100 100 102 <br /> Relative% <br /> Difference- 0 0 00 51 4 0 <br /> .u.,...- <br /> , tw'..0 '.~wi Au.}Axl.,hYW w.vA,.YL�S,�6 , iv,4, , , , ,. ,. „ v, a✓r x ,v..v... ,v.v.ri o'•s.+v_v k*Nv:4i .n,5cw}".e x.Y+w� .. c+..n <br /> LCS Batch#- 1LCS051294 lLCS051294 ILCS051294 1LCS051294 <br /> Date Prepared. 5/12/94 5/12/94 5/12/94 5/12/94 <br /> Date Analyzed: 5/12/94 5/12/94 5/12/94 5/12/94 <br /> Instrument I D #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS% <br /> Recovery: 102 99 99 100 <br /> %Recovery <br /> Control Limits- 71-133 72-128 72-130 71-120 <br /> Please Note <br /> SEOUOIA ANALYTICAL The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> ELAP#1271 preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> f �{ 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 4E32101 WAT c4> <br />