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Laboratories Inc. <br /> NowEnvironmental 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 Report - 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 Recoveg RPD Recove Lab Quals <br /> 2-Fluorophenol(Surrogate) BRL0939 Matrix Spike 0814857-16 ND 44.694 80.000 ug/L 55.9 28-93 <br /> Matrix Spike Duplicate 0814857-16 ND 42.624 80.000 ug/L 53.3 28-93 <br /> Pheno(-d5(Surrogate) BRL0939 Matrix Spike 0814857-16 ND 30.717 80.000 ug/L 38.4 10-82 <br /> Matrix Spike Duplicate 0814857-16 ND 29.294 80.000 ug/L 36.6 10-82 <br /> Nitrobenzene-d5(Surrogate) BRL0939 Matrix Spike 0814857-16 ND 59.405 80.000 ug/L 74.3 53-116 <br /> Matrix Spike Duplicate 0814857-16 ND 58.687 80.000 ug/L 73.4 53-116 <br /> 2-Fluorobiphenyl(Surrogate) BRL0939 Matrix Spike 0814857-16 ND 55.484 80.000 ug/L 69.4 23-157 <br /> Matrix Spike Duplicate 0814857-16 ND 56.912 80.000 ug/L 71.1 23-157 <br /> —_.-..............._ _._..-------. ._------.—_ _... _---...._ —___�_ ______..._....-�_--------_—._...— -...___.._-._...__._..___....—_..-_. <br /> 2,4,6-Tribrornophenol(Surrogate) BRL0939 Matrix Spike 0814857-16 ND 58.766 80.000 ug/L 73.5 38-142 <br /> Matrix Spike Duplicate 0814857-16 ND 56.976 80.000 ug/L 71.2 38-142 <br /> p-Terphenyl-d14(Surrogate) BRL0939 Matrix Spike 0814857-16 ND 29.976 40.000 ug/L 74.9 48-148 <br /> Matrix Spike Duplicate0814857-16 ND 28.142 40.000 ug/L 70.4 48-148 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.77ris analytical report must he reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submittina party. BC Laboratori assumcs no responsibility for report alteration,seitamition,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 ( 7-4911 FAX(661)327-1918 www.bclabs.com age 27 of 54 <br /> Certifications: California-ELAP Certification N r 1186; Nevada Administrative Code-NAC-445A <br />