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Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: Austin Road/NCYCC Drilling Reported:: 12/19/2008 13:17 <br /> 4630 South Highway 94 North Outer Road Project Number: [none] <br /> Saint Charles,MO 63304 Project Manager: David Vasbinder <br /> Base Neutral and Acid Extractables Organic Analysis (EPA Method 87 ) <br /> Quality Control Report - Method Blank Analysis <br /> Constituent Batch:ID QC Sample ID MB Result Units PQL MDI- Lab Quals <br /> N-Nitrosomethylethylamine BRL0939 BRL0939-BLK1 NO ug/L 10 0.45 <br /> N-Nitrosopiperidine BRL0939 BRL0939-BLK1 NO ug/L 10 0.57 <br /> —.._--------- ._— <br /> N-Nitrosupyrrolidine BRL0939 BRL0939-BLK1 NO ug/L 10 0.50 <br /> PentachlorobenzeneBRL0939 BRL0939-BLK1 NO ug/L 10 0.56 <br /> --_. ._.__...—....—...__—..—_..-------.--— — _ —. - ...._ _—... --........- - <br /> Pentachloronitrobenzene BRL0939 BRL0939-BLK1 NO ug/L 10 0.47 <br /> Phenacetin BRL0939 BRL0939-BLK1 NO ug/L 10 0.33 <br /> 1,4-Phenylenediamine BRL0939 BRL0939-BLK1 ND ug/L 20 4,4 <br /> Pronamide BRL0939 BRL0939-BLK1 NO ug/L 10 0.50 <br /> Safrole BRL0939 BRL0939-BLK1 NO ug/L 10 0.37 <br /> 1,2,4,5-Tetrachlorobenzene BRL0939 BRL0939-BLK1 NO ug/L 10 0.36 <br /> 2,3,4,6-Tetrachlorophenol BRL0939 BRL0939-BLK1 NO u 10 0.46 <br /> 2-Toluidine BRL0939 BRL0939-BLK1 NO ug/L 10 0.36 <br /> _-.---.. .._-....... ---_ _ --. —_ ---.. _ --- — ._—.--_---___.....--- _.—.---------- <br /> _—_....._.—_ <br /> o,o,o-Triethylphosphorothioate BRL0939 BRL0939-BLK1 NO ug/L 10 0,47 <br /> 1,3,5-Trinitrobenzene BRL0939 BRL0939-BLK1 NO ugll- 10 0.57 <br /> 2-Fluorophenol(Surrogate) BRL0939 BRL0939-BLK2 49.6 % 28-93 (LCL-UCL) <br /> Phenol-d5(Surrogate) BRL0939 BRL0939••BLK2 35.6 % — 10-82 (LGL-UCL) <br /> Nitrobenzene-d5(Surrogate) BRL0939 BRL0939••BLK2 73.5 % 53-116 (LCL-UCL) <br /> 2-Fluorobipheny[(Surrogate) BRL0939 BRL0939-BLK2 68.5 % 23-157 (LCL-UCL) <br /> 2,4,6-Tribromophenoi(Surrogate) BRL0939 BRL0939-BLK2 68.4 % 38-142 (LCL-UCL) <br /> p-Terphenyi-d14(Surrogate) BRL0939 BRL0939-BLK2 73,0 % 48-148 (LCL-UCL) <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 party. BC l..aboratorie assumes no responsibility for report alteration,separation,detachment or third party interpretation, <br /> 4100 Atlas Court Bakersfield,CA 93308 (67-4911 FAX(661)327-1918 www.bclabs.com age 49 of 54 <br /> Certifications: California-ELAP Certification N 1186; Nevada Administrative Code-NAC 445A <br />