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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N '8ct Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> �I11 Analytical 819 Stnker Avenue Sante 8 Sacramento CA 95834 (9 16) 921 9600 FAX(916)921 0100 <br /> ISrnith Environmental Client Project ID 95-141-01-01,Ekholm Property <br /> 260 Graphics Dnve Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Homsey Work Order# 9641483-01 Reported Jan 25, 1996 <br /> {QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC0110g6BTEX21A GCO11OWBTEX21A GCO11096BTEX21A GC011096STEX21A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> ' <br /> Analyst, J Woo J Woo J Woo J Woo <br /> MS/MSD# 960108701 960108701 960108701 960108701 <br /> Sample Conc.: N D N D N D N D <br /> Prepared Date: 1/10/96 1/10/96 1/10/96 1/10/96 <br /> Analyzed Date: 1/10/96 1/10/96 1/10/96 1/10/96 <br /> Instrument I.D.#. GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc. Spiked. long/L 10pg/L 10pg/L 30Ng/L <br /> Result: 9 8 9 6 94 28 <br /> MS% Recovery, 98 96 94 93 <br /> PDup. Result 9 4 s 7 80 24 <br /> MSD % Recov : 94 87 80 s0 <br /> I RPD: 42 9 8 16 15 <br /> RPD Limit: 0-50 0-50 0.50 0-50 <br /> .,ZrrnS r sS1 v` rn^Apq,wn�} Yr+r:C`'rnm y}vr} ��y}rrtiu titi,. rn0 vnr,r± r , �, r`•,v,rr ;r`,'>..t"k ir``}S"£ ' r �:3 ham{ `r] 44< �k,` �,av'Y o;`Y -r,.xc, <br /> i ..S r yr n3' 4yx , Yrrr s s S s ti rq r t vis"tr • St Jr O ryn n tt r. ry vi i, ssvvrrn r-r- <br /> , ,Sv�ry r r4 ,xr}rhr�ikRn�W;.,,CJ.vYA}}i Hr'Tnnwx'x.-Sin r Nx ,ry'v4r..+-vN,.�h h..1iY r '-4i' nvt!e 4r,n Sti^""vrW W Sri4,w.ro rmOr.41"rr' +,.}r m++GS 3`,` `WrA <br /> LCS #: BLK011096 BLK011096 BLK011096 BLK011096 <br /> Prepared Date: 1/10/96 1/10/96 1/10/96 1/10/96 <br /> Analyzed Date: 1/10/96 1/10/96 1/10/96 1/10/96 <br /> Instrument I.D.#: GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc. Spiked: 10Kg/L 10lig/L long/L 30119/L <br /> LCS Result 10 9 7 9 3 28 <br /> LCS % Recov 100 97 93 93 <br /> MS/MSD <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS 1s a control sample of known,tnterferent-free matrix that is analyzed using the same reagents, <br /> UEQUOIA 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 0 <br /> N—(TSJL <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matnx <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager *'MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 96014W SSS <3> <br /> 1 � <br />