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• www.enerdab.com <br />Helena, NT 871472 -0711 • Billings, MT 600 - 7354469 • Casper, WY 888- 235 -0515 <br />LU 2XA 1Wt <br />Gillette, <br />WY 866 -686 -7175 • Rapid City, SD 880 -672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />09/30/14 <br />Project: <br />Schwartz -GW 9/11/14 S27683 and S27684 <br />Work Order: <br />C14090497 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: <br />ICPMS2- C_140923A <br />Lab ID: <br />lCV 2 Initial Calibration Verification Standard <br />09/23/14 13:47 <br />Copper <br />0.0496 mg /L <br />0.0010 99 90 110 <br />Silver <br />0.0204 mg /L <br />0.0010 102 90 110 <br />Method: <br />E200.8 <br />Batch: 42613 <br />Lab ID: <br />MB -42613 2 Method Blank <br />Run: ICPMS2 -C 140923A <br />09/23/14 15:41 <br />Copper <br />ND mg /L <br />0.0004 <br />Silver <br />ND mg /L <br />2E -05 <br />Lab ID: <br />LCS3 -42613 2 Laboratory Control Sample <br />Run: ICPMS2- C_140923A <br />09/23/14 15:44 <br />Copper <br />0.480 mg /L <br />0.0050 96 85 115 <br />Silver <br />0.0511 mg /L <br />0.0010 102 85 115 <br />Lab ID: <br />C14090454- 001CMS3 2 Sample Matrix Spike <br />Run: ICPMS2- C_140923A <br />09/23/14 16:29 <br />Copper <br />0.857 mg /L <br />0.0050 115 70 130 <br />Silver <br />0.0620 mg /L <br />0.0010 124 70 130 <br />Lab ID: <br />C14090454- 001CMSD 2 Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_140923A <br />09/23/14 16:32 <br />Copper <br />0.756 mg /L <br />0.0050 95 70 130 13 <br />20 <br />Silver <br />0.0500 mg /L <br />0.0010 100 70 130 21 <br />20 R <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />R - RPD exceeds advisory limit. <br />Page 12 of 25 <br />