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www.energylab.com Helena, MT 677-472-0711 • Billings, MT 800-735-4489 w Casper, WY 888-235-0515 <br />Ana"calfxcao-v5lnta 1952 Gillette, WY 866-686-7175 • Rapid City, SO 888-672-1225 * College Station, Tx 808-690-2216 <br />_ - <br />QA/QC Summary Report _. ____._. <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Report Date: 09/09/10 <br />Work Order: C10080639 <br /> <br />Analyte Co unt Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E245.1 Batch: 27191 <br />Sample ID: MB-27191 Method Blank Run: CVAA_C203_100824B 08/24/10 16:12 <br />Mercury ND mg/L 8E-06 <br />Sample ID: LCS-27191 Laboratory Control Sample Run: CVAA_C203_100824B 08/24/10 16:16 <br />Mercury 0.00537 mg/L 0.00010 107 90 110 <br />Sample ID: C10080639-001DMS Sample Matrix Spike Run: CVAA_C203_100824B 08/24/10 16:34 <br />Mercury 0.00788 mg/L 0.00010 105 85 115 <br />Sample ID: C10080639-001DMSD Sample Matrix Spike Duplicate Run: CVAA_C203_100824B 08/24/10 16:36 <br />Mercury 0.00788 mg/L 0.00010 105 85 115 0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 13 of 21