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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 8270C) <br /> Quality Control Repo - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample Type___Sample ID Result Result Added Units RPD Recove RPD Recove Lab Quail <br /> Acenaphthene BRL0939 Matrix Spike 0814857-16 ND 47.033 50.000 ug/L 94.1 10-201 <br /> Matrix Spike Duplicate 0814857-16 ND 46.832 50.000 ug/L 0.4 93.7 26 10-201 <br /> 2,4-Dinitrotoluene BRL0939 Matrix Spike 0814857-16 ND 39.822 50.000 ug/L 79.6 49-138 <br /> Matrix <br /> - <br /> Matrix Spike Dupllcate0814857-16 ND 39.419 50.000 ug/L 1.0 78.8 22 49--------- <br /> 138 <br /> -- ---- <br /> Hexachlorobenzene BRL0939 Matrix Spike 0814857-16 ND 43.393 50.000 ug/L 86.8 47-138 <br /> Matrix Spike Duplicate 0814857-16 ND 42.262 50.000 ug/L 2.7 84.5 30 47-138 <br /> _ ......... <br /> ------------ - - - _ ----- . -- _.... - - _ ---- ----- <br /> Nitrobenzene BRL0939 Matrix Spike 0814857-16 ND 40.114 50.000 ug/L 80.2 56-114 <br /> Matrix Spike Duplicate 0814857-16 ND 40.529 50.000 ug/L -`1.1 81.1 _ 26 56-114- <br /> N-Nitrosodi-N-propylamine BRL0939 Matrix Spike 0814857-16 ND 43.203 50.000 ug/L 86.4 45-108 <br /> Matrix Spike Duplicate 0814857-16 ND 43.038 50.000 ug/L --003 86.1 26 45-108 <br /> Pyrene BRL0939 Matrix Spike 0814857-16 ND 43.833 50.000 ug/L 87.7 68-137 <br /> Matrix Spike Duplicate 0814857-16 NO 41.176 50.000 ug/L 6.2 82.4 28 68-137 <br /> 4-Chloro-3-methylphenol BRL0939 Matrix Spike 0814857-16 ND 45.739 50.000 ug/L 91.5 10-180 <br /> Matrix Spike Duplicate 0814857-16 ND 44.434 50.000 ug/L 2.9 88.9 25 10-180 <br /> 2-Chlorophenol BRL0939 Matrix Spike 0814857-16 ND 38.215 50.000 ug/L 76.4 52-122 <br /> Matrix Spike Duplicate 0814857-16 ND 37.043 50.000 ug/L 3.1 74.1 25 _- <br /> 52-122 <br /> ..._.....- - ..-._ --- ��-... _ _.--- <br /> 2-Methylphenol BRL0939 Matrix Spike 0814857-16 ND 37.437 50.000 ug/L 74.9 49-110 <br /> Matrix Spike Duplicate 0814857-16 ND 35.506 50.000 ug/L 5.3 71.0 30 49-110 <br /> 3-&4-Methylphenol BRL0939 Matrix Spike 0814857-16 ND 57.327 50.000 ug/L 115 10-256 <br /> Matrix Spike Duplicate 0814857-16 ND 55.175 50.000 ug/L 4.4 110 30 10-256 <br /> 4-Nitrophenol BRL0939 Matrix Spike 0814857-16 ND 20.293 50.000 ug/L 40.6 10-116 <br /> Matrix Spike Duplicate 0814857-16 ND 20.320 50.000 ug/L 0 40.6 30 10-116 <br /> Pentachlorophenol BRL0939 Matrix Spike 0814857-16 ND 39.265 50.000 ug/L 78.5 19-169 <br /> Matrix Spike Duplicate 0814857-16 ND 38.132 50.000 ug/L 2.8 76.3 30 19-169 <br /> Phenol BRL0939 Matrix Spike 0814857-16 ND 19.204 50.000 ug/L 38.4 10-77 <br /> Matrix Spike Duplicate 0814857-16 ND 18.367 50.000 ug/L 4.5 36.7 29 10-77 <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 mutts listed in this report are for the exclusive use of the submitting party. BC Laboratories.Inc.assumes no responsibility for report alteration,separation,detachment or third Partv imetpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 26 of 54 <br /> Certifications: Califomia-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />