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Laboratories Inc. i <br /> Environmental Testing Laboratory Since 1949 <br /> Herst Associates Project: Austin Road/NCYGG Drilling Reported. 12119/2008 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 Extracta les Organic Analysis (EPA Method 8270C) <br /> Quality Control Report - Laboratory Control Sample <br /> Control Limits <br /> Spike Percent Percent <br /> Constituent Batch 1D QC Sample ID QC Type Result Level PQL Units Recovery RPD Recovery RPD Lab Qualls <br /> Acenaphthene BRL0939 BRL0939-BSI LCS 48.188 50.000 2.0 ug/L 96.4 62-134 <br /> 2,4-Dinitrotoluene BRL0939 BRL0939-BSI LCS 41.492 50.000 2.0 ug/L 83.0 45- 141 <br /> ------...__. <br /> Hexachlorobenzene BRL0939 BRL0939-BS1 LCS 44.085 50.000 2.0 ug/L 88.2 46-135 <br /> Nitrobenzene BRL0939 BRL0939-BS1 LCS 41.770 50.000 2.0 ug/L 83.5 51-118 <br /> N-Nitrosodi-N-propylamine BRL0939 BRL0939-BS1 LCS 44.278 50.00 2.0 ug/L 88.6 36-114 <br /> Pyrene BRL0939 BRL0939-BSI LCS 42.608 50.000 2.0 ug/L 85.2 10-195 <br /> 4-Chloro-3-methyl phenol BRL0939 BRL0939-BS1 LCS 46.002 50.000 5.0 ug/L 92.0 10-180 <br /> _ .-..........._._.__..._. -. -- <br /> 2-Chlorophenol BRL0939 BRL0939-BSI LCS 38.653 50.000 2.0 ug/L 77.3 43-128 <br /> 2-Methylphenol BRL0939 BRL0939-BSI LCS 38.231 50.000 2.0 ug/L 76.5 19-126 <br /> 3-&4-MethAphenol BRL0939 BRL0939-BSI LCS 57.574 50.000 2.0 uglL 115 17-216 <br /> 4-Nitrophenol BRL0939 BRL0939-BSI LCS 20.986 50.000 2.0 ug/L 42.0 10-113 <br /> Pentachlorophenol BRL0939 BRL0939-BSI LCS 39.613 50.000 10 ug/L 79.2 14-167 <br /> _ ----._..... <br /> Phenol BRL0939 BRL0939-BSI LCS 18.981 50.000 2.0 ug/L 38.0 10-89 <br /> 2-Fluorophenol(Surrogate) BRL0939 BRL0939-BS1 LCS 44.526 80.000 ug/L 55.7 28-93 <br /> Phenol-d5(Surrogate) BRL0939 BRL0939-BSI LCS 30.785 80.000 u911- 38.5 10-82 <br /> Nitrobenzene-d5(Surrogate) BRL0939 BRL0939-BS1 LCS 61.976 80.000 ug/L 77.5 53-116 <br /> _-- -_..__- ---_-_.____---__--- <br /> 2-Fluorobiphenyl(Surrogate) BRL0939 BRL0939-BSI LCS 57.045 80.000 ug/L 71.3 23-157 <br /> 2,4,6-Tdbromophenol(Surrogate) BRL0939 BRL0939-BS1 LCS 60.734 80.000 ug/L 75.9 38-142 <br /> p-Terphenyl-d14(Surrogate) BRL0939 BRL0939-BS1 LCS 29.107 40.000 ug/L 72.8 48-148 <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 Laboratone assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (!7-4911 FAX(661)327-1918 www.bclabs.com age 35 of 54 <br /> Certifications: California-ELAP Certification N 1186; Nevada Administrative Code-NAC-445A <br />