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wwwtwgOsb.corn � Helena, MT 877- 472 -0711 - Billings, W 600- 735 -4489 - Casper, WY 888- 235 -8515 <br />119 Gillette, WY 866 -686 -7175 - Rapid City, SD 888 -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: 09/30/13 <br />Project: Schwartz SW 09/05/13 S27131 Work Order: 013090222 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />Sample ID: C13090186- 002BMSD2 5 Sample Matrix Spike Duplicate <br />Potassium 100 mg /L <br />Sodium 205 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R178496 <br />Run: ICP4- C_130918A 09/18/13 17:40 <br />1.0 96 70 130 2.5 20 <br />1.0 95 70 130 1.8 20 <br />ND - Not detected at the reporting limit. <br />Page 13 of 27 <br />