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Laboratories Inc. ; <br /> Environmental Testing Laboratory Sing 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 /> Purgale Aromatics and Total Petroleum Hydrocarbons <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 Recovey RPD Recoveg Lab Quals <br /> Gasoline Range Organics(C4-C12) BRL0757 Matrix Spike 0814857-50 ND 970.25 1000.0 ug/L. 97.0 70-1130 <br /> Matrix Spike Duplicate 0814857-50 ND 907.93 1000.0 ug/L 6.6 90.8 20 70-130 <br /> -- -- --......._. _.._ --- --...._..� -- ----._..� _ - — - <br /> a,a,a-Trifluorotoluene(FID Surrogate) BRL0757 Matrix Spike 0814857-50 ND 39.242 40.000 ug/L 98.1 70-130 <br /> Matrix Spike Duplicate 0814857-50 ND 38.694 40.000 ug/L 96.7 70-130 <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 tlas report are for the exclusive use of the submitting party. BC Laboratories,Inc.assumes no msponsiblity for report alteration,separation,detachment or third panty interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 28 of 54 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />