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www.enerdab.com Helena, MT 877 - 472 -0711 - Billings, MT 800- 735 -4489 - Casper, WY 888- 235 -0515 <br />} Gillette, WY 866 -666 -7175 - Rapid city, sD 886 - 672 -1225 - College Station, TX 888 -680 -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 09/04/14 S27679 <br />Work Order: <br />C14090400 <br />Analyte <br />Count Result Units RL %REC Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.8 <br />Analytical Run: ICPMS2- C_140923A <br />Lab ID: <br />ICV 2 Initial Calibration Verification Standard <br />70 130 <br />09/23/14 13:47 <br />Copper <br />0.0496 mg /L 0.0010 99 90 <br />110 <br />2 <br />Silver <br />0.0204 mg /L 0.0010 102 90 <br />110 <br />Method: <br />E200.8 <br />96 <br />85 115 <br />102 <br />Lab ID: <br />MB -42613 <br />2 <br />Method Blank <br />70 130 <br />Copper <br />70 130 <br />ND mg /L <br />0.0004 <br />Silver <br />100 <br />70 130 <br />ND mg /L <br />2E -05 <br />Lab ID: <br />LCS3 -42613 <br />2 <br />Laboratory Control Sample <br />Copper <br />0.480 mg /L <br />0.0050 <br />Silver <br />0.0511 mg /L <br />0.0010 <br />Lab ID: <br />C14090454- 001CMS3 <br />2 <br />Sample Matrix Spike <br />Copper <br />0.857 mg /L <br />0.0050 <br />Silver <br />0.0620 mg /L <br />0.0010 <br />Lab ID: <br />014090454- 001CMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Copper <br />0.756 mg /L <br />0.0050 <br />Silver <br />0.0500 mg /L <br />0.0010 <br />Run: ICPMS2 -C 140923A <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration R - RPD exceeds advisory limit. <br />Batch: 42613 <br />09/23/14 15:41 <br />09/23/14 15:44 <br />09/23/14 16:29 <br />09/23/14 16:32 <br />13 20 <br />21 20 R <br />Page 10 of 21 <br />Run: ICPMS2- C_140923A <br />96 <br />85 115 <br />102 <br />85 115 <br />Run: ICPMS2- C_140923A <br />115 <br />70 130 <br />124 <br />70 130 <br />Run: ICPMS2- C_140923A <br />95 <br />70 130 <br />100 <br />70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration R - RPD exceeds advisory limit. <br />Batch: 42613 <br />09/23/14 15:41 <br />09/23/14 15:44 <br />09/23/14 16:29 <br />09/23/14 16:32 <br />13 20 <br />21 20 R <br />Page 10 of 21 <br />