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Laboratories, Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: NCYC Reported: 02110/2010 15:29 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles,MO 63304 Project Manager: Erin Fanning <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch ID OC Sample ID MB Result Units POL MDL Lab Quals <br /> 1,3-Dichloropropone BTBO470 BTBO470-BLKI ND ug/L 0.50 0.099 <br /> trans-1,3-DichloropropeneBTBO470 BTBO470-BLKI ND ug/L 0.50 0 0.079 ............ <br /> ------------ <br /> Ethylbenzene BT80470 BTBO470-BLKI ND ug/L 0.50 0.12 <br /> Hexachlorobutadiene BTB0470 BTBO470-BLKI ND ug/L 0.50 0.12 <br /> ....... <br /> Methylene chloride BTBO470 BTBO470-BLKI ND ug/L- 1.0 0.28 <br /> Methyl t-butyl ether BTB0470 BTB0470-BLK1 ND ug/L 0.50 0.11 <br /> Naphthalene BTBO470 BTB0470-BLK1 ND ug/L 0.50 0.36 <br /> Styrene BTBO470 BTB0470-BLK1 ND ug/L 0.50 0.093 <br /> .......... <br /> 1,1,2,2-Tetrachloroethane BTBO470 BTBO470-BLKI ND ug/L 0,50 0.14 <br /> -------------- ------- <br /> Tetrachloroethene BTB0470 BT80470-BLK1 ND ug/L 0.50 0A3 <br /> Toluene <br /> BTB0470 BTBO470-BLKI ND ug/L 0.50 0.093 <br /> ----------------- ---------- <br /> . - - <br /> .......... <br /> 1,2,4-Trichlorobenzene BTBO470 BTB0470-BLK1 ND ug/L 0.50 017 <br /> ............. <br /> ------------ --------- <br /> 1,1,1-Trichloroeftne BTBO470 STBO470-BLKI ND ug/L 0.50 0.081 <br /> 1,1,2-Trichloroethane BTBO470 BTB0470-BLK1 ND ug/L 0.50 021 <br /> Trichloroethene BTBO470 BTB0470-BLK1 ND ug/L 0.50 0.13 <br /> Trichlorofluoromethane BTBO470 BTBO470-BLKI ND ug/L 0.50 0.11 <br /> 1,2,3-TrichlompropaneBTBO470 BTBO470-BLKI ND ug/L 1.0 0.30 <br /> ............. -------- .......... ............ <br /> Vinyl chloride BTB0470 BT80470-BLKI ND ug/L 0.50 0.14 <br /> ----------- <br /> Total Xylenes BTBO470 BTBO470-BLKI ND ug/L 1.0 0.26 <br /> ........... <br /> Acetone <br /> BTBO470 BTBO470-BLKI ND ug/L 10 4.6 <br /> ......- <br /> Acrylonitrile BTB0470 BTB0470-BLK1 ND ug/L 5.1 0 1 1.2-1'--------..----- <br /> .......... <br /> t-Amyl Methyl ether BTBO470. B.TBO470-BLK1 ND ug/L 0.5,0 0.2 1 5 <br /> ----------- <br /> t-Butyl alcoholBTBO470 BTB0470-BLKI ND ug/L 10 9.4 <br /> ----------- <br /> ............ <br /> Carbon disulfide BTBO470 BTB0470-BLKI ND ug/L 1.0 0.35 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting pat". BC Laboratories,inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.belabs.com Page 34 of 36 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />