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�t F <br /> Sequoia 819 Straker Avenue, Supe 8 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)921300 <br /> SECOR International-Sacramento Project ARCO 2093 Tracy CA Sampled 3/15100 <br /> 9912 Business Park Dr,5te 100 Project Number 077 41923 190 Received 3/16/00 <br /> Sacramento,CA 95827 Pro ect Managar Rusty Benkosky Reported 3130/00 <br /> Total Furgeable Hydrocarbons(C6-Cl2),BTEX and MTBE in Air by DHS Li]FT/Quality Control <br /> Sequoia.Analytical- Sacramento <br /> Daze Spike Sample QC Reporting Limit Recov RPD RPU <br /> Analyte Analyzed Level Result Result Units Recov Llrruts % Liuut °to Notcs <br /> Batch_ 0030202 Date Prepared- 3/17/00 Extraction Method EPA 5030E <br /> Blank 2- )<KI <br /> Purgeable Hydrocarbons 3117/00 ND mg/ml Air 100 <br /> Benzene ND 0.0500 <br /> Toluene ND 00500 <br /> Ethylbcnzene ND 00500 <br /> Xylenes(total) ND 00500 <br /> _Methyl tcrt-butyl erher _ -� _-_" -- _ ND 0500 <br /> Surrogare a a a-Tri luorotoluene 200 2 12 60 0-140 Y 106 <br /> WS g�3��oz- sx <br /> Bm=nc 3/17100 200 1 87 mg/ml Air 700-130 935 <br /> Toluene 200 1 88 1. 700-130 940 <br /> Ethylbenzene 200 1 89 700-130 945 <br /> is(total) 600 597 1700-130 995 <br /> ten-bu 1 ether 200 1 92 1. 700-130 960 <br /> Surrogare a a a-Trifluorotoluene " 200 ._ v----- 206 600-140 103- - - - ------- <br /> LCS Dun 0030202-BSD1 <br /> Benzene 3/17/00 200 195 mg/rrP Air 700-130 975 250 419 <br /> Toluene 200 1 96 700-130 980 250 417 <br /> Ethylbenzene 200 193 ' 700-130 990 250 465 <br /> Xylenes(total) 600 624 700-130 104 250 442 <br /> Methyi tert-butyl ether _ 200 -_ r 2 08 700-130 104 - 250 $00 <br /> Surrogate a,a,a-Trrfluoroeoluene 200 2 05 600-140 102 <br /> SMWa Analytical-Sacramento *,Refer to end of reporr far text of nares and defininons <br /> Page 5 of 8 <br /> IT/2- d Sas-/uio 1tl3S Wd32 TO 00. OE dUw <br />