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Sequoia 1455 McDowell Blvd North Ste D <br /> Paaluma CA 94964 <br /> -- - �� Analytical- - -- - - - - - -- ---- — <br /> (707)7921855 <br /> -- ---- <br /> —FAX(70T)792-0342 <br /> www sequoialabs coin <br /> 1 <br /> Secor-Rancho Cordova Project Arco Site 4932,Stockton,CA P503205 <br /> ' 3017 Kilgare Road Suite 100 Project Number WR 63964 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03/30/05 12 44 <br /> BTEX by 8021B <br /> Sequoia Analytical-Petaluma <br /> Reporting <br /> t.A <br /> [AMnalyte Result mt Units Dilution Batch Prepared Analyzed MethodNote <br /> INF(P503205-01)Air Sampled 03/15/05 14 15 Received 03/16/05 1 1 40 <br /> Benzene 26 050 mg/ml Air 1 5030181 03/17/05 03/17/03 EPA 80218 <br /> Toluenew 13 34 - <br /> 15 050 <br /> Elhylbenzene 39 050 <br /> Xylenes(lotal) 26 050 <br /> Methyl tert-butyl ether 13 25 <br /> ' Surrogate a a,a-Trtuorotoluene 93% 6S-135 <br /> Benzene 082 016 ppmv <br /> Toluene 39 013 <br /> Ftlrylbenzene 090 012 w w <br /> Xylenes(total) 6 1 012 <br /> Methyl cert butyl ether 36 056 <br /> Surrogate 0.0,0-TrIuorotoluene 93% 65-135 - - <br /> AS-EFF(P50320"2)Air Sampled 03/15/05 14 10 Received 03/16/05 11 40 <br /> Benzene ND 050 mPfms qtr I 5030181 03/17/05 03/17/05 EPA 80218 <br /> ND' <br /> Toluene 050 • I306• = <br /> Ethylbcnzeae ND 0 50 ■ <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 25 <br /> Surrogale a 44-Trifluorotoluene 97% 65-135 <br /> Benzene ND 016 ppmv <br /> Toluene ND Ola <br /> Ethylbenzene ND 012 - <br /> ' Xylenes(total) ND 012 <br /> Methyl tart-butyl ether ND 0 56 <br /> Surrogate a,a a-Trifluomialuene 97% 65-13S - <br /> 1 <br /> 1 <br /> Sequoia Analytical-Petaluma The-4-1is is this report apply to the samples analyzed in accordance with the chalii of <br /> custody document dhilem orherwtse slated results are reported on a wer weight basrt <br /> This aralytical report must be reproduced in its entirely <br /> Page 6 of 20 <br />