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wwwAnern4ob.com <br />A~ Ensibm SIVA rest <br />r,,877-472-0711 • Billings, NT IOD-735-4889 • Casper, WY SU-235-0515 <br />54475 a Rapid City, SO BIB-672-1225 • college Station, IX 8$8-620-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/25/11 <br />Project: Schwartz-GW 03/31/11 S25673 Work Order: C11040039 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Batch: 29576 <br />Sample ID: MB-29576 Method Blank Run: CVAA_C203_110415A 04/15/11 09:45 <br />Mercury ND mg/L 0.00010 <br />Sample ID: LCS-29576 Laboratory Control Sample Run: CVAA_C203_110415A 04/15/11 09:47 <br />Mercury 0.00456 mg/L 0.00010 91 90 110 <br />Sample ID: C11040247-001DMS Sample Matrix Spike Run: CVAA_C203_110415A 04/15/11 10:04 <br />Mercury 0.00526 mg/L 0.00010 105 85 115 <br />Sample ID: 011040247-001 DMSD Sample Matrix Spike Duplicate Run: CVAA_C203_110415A 04/15/11 10:05 <br />Mercury 0.00488 mg/L 0.00010 98 85 115 7.5 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 10 of 19 <br />