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www energylab com Helena, MT 671472-0711 • Billings, MT 800-735-4189 • Casper, WY 868-235-0515 <br />AaaryHalaxa9baSAaa,l9st Gihette, Y!Y 866-686-7175 • Rapid City, SD 88B-672.1225 • College Station, Tx 888-608-2216 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/19/11 <br />Project: Schwartz GW 3/24/11 S25646 & S25647 Work Order: C11030817 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 Batch: R144365 <br />Sample ID: LRB Method Blank Run: ICPMS2-C_110401A 04/01/11 14:07 <br />Uranium ND mg/L 0.00020 <br />Sample ID: LFB Laboratory Fortified Blank Run: ICPMS2-C_110401A 04/01/11 14:14 <br />Uranium 0.0539 mg/L 0.00030 108 85 115 <br />Sample ID: C11030817-002CMS4 Sample Matrix Spike Run: ICPMS2-C_110401A 04/01/11 14:55 <br />Uranium 2.64 mg/L 0.00030 70 130 A <br />Sample ID: C11030817-002CMSD Sample Matrix Spike Duplicate Run: ICPMS2-C_110401A 04/01/11 15:01 <br />Uranium 2.63 mg/L 0.00030 70 130 0.3 20 A <br />Oualifiers: <br />RL - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />ND - Not detected at the reporting limit. MDC - Minimum detectable concentration <br />Page 12 of 26