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www.enerdab.com ( Helena, MT 677- 472 -0711 - Billings, MT 808- 735 -4489 - Casper, WY 888 -235 -0515 <br />Shm Isis I Gillette, WY 866 -686 -7175 • Rapid City, SD 886- 672 -1225 - College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 02/17/15 <br />Project: Schwartz - GW 1/28/15 S28066, S28069, S28071 Work Order: C15010751 <br />I <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E365.1 Analytical Run: SUB - 6237896 <br />Lab ID: ICV Initial Calibration Verification Standard 02/05/15 10:24 <br />Phosphorus, Total as P 0.249 mg /L 0.0050 100 90 110 <br />Method: E365.1 <br />Lab ID: MB -86737 <br />Method Blank <br />Phosphorus, Total as P <br />ND mg /L <br />0.003 <br />Lab ID: LCS -86737 <br />Laboratory Control Sample <br />Phosphorus, Total as P <br />0.188 mg /L <br />0.0050 <br />Lab ID: B15020129- 001CMS <br />Sample Matrix Spike <br />Phosphorus, Total as P <br />0.292 mg /L <br />0.0050 <br />Lab ID: B15020129- 001CMSD <br />Sample Matrix Spike Duplicate <br />Phosphorus, Total as P <br />0.291 mg /L <br />0.0050 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: SUB - 6237896 <br />Run: SUB - 6237896 <br />94 90 110 <br />Run: SUB - 13237896 <br />98 90 110 <br />Run: SUB - 13237896 <br />97 90 110 <br />ND - Not detected at the reporting limit. <br />Batch: B86737 <br />02/05/15 10:28 <br />02/05/15 10:29 <br />02/05/15 10:31 <br />02/05/15 10:32 <br />0.3 10 <br />Page 14 of 23 <br />