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• - www.enerdiib.com Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -606 -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 <br />Project: Schwartz -GW 9/10/14 S27680,S27681 <br />Analyte Count Result Units <br />Method: E245.1 <br />Report Date: 09/30/14 <br />Work Order: C14090456 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: SUB- B231094 <br />Lab ID: QCS Initial Calibration Verification Standard 09/24/14 13:55 <br />Mercury 0.00206 mg /L 0.00010 103 90 110 <br />Method: <br />E245.1 <br />Lab ID: <br />MB -83176 <br />Method Blank <br />Run: SUB- B231094 <br />Mercury <br />ND mg /L <br />1 E -05 <br />Lab ID: <br />LCS -83176 <br />Laboratory Control Sample <br />Run: SUB - 6231094 <br />Mercury <br />0.00198 mg /L <br />0.00010 <br />99 85 115 <br />Lab ID: <br />B14091214- 001DMS <br />Sample Matrix Spike <br />Run: SUB - 13231094 <br />Mercury <br />0.00200 mg /L <br />0.00010 <br />100 70 130 <br />Lab ID: <br />B14091214- 001DMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB - 13231094 <br />Mercury <br />0.00201 mg /L <br />0.00010 <br />101 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: B 83176 <br />09/24/14 16:06 <br />09/24/14 16:08 <br />09/24/14 16:12 <br />09/24/14 16:14 <br />0.5 30 <br />Page 15 of 25 <br />