2013-11-26_HYDROLOGY - M1977300 (4)

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• www.pwgyleb.corn Helena, MT 877472 -0711 • Billings, MT 800- 735 -4469 • Casper, WY 888 -235 -0515 'tom f Gillette, WY 866 -686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 -690 -2218 QA/QC Summary Report Prepared by Casper, WY Branch Client: Cotter Corporation E200.7 Run: ICP4- C_131002A Report Date: 10/24/13 Project: Schwartz GW 9/25/13 S27178 & S27179 MB -39227 4 Method Blank 99 Work Order: 013091022 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method: E200.7 Iron 2.42 mg /L ND mg /L 0.004 Analytical Run: ICP4- C_131002A Sample ID: ICV 5 Initial Calibration Verification Standard Manganese 0.463 mg /L 0.0006 mg /L 10/02/13 14:03 Aluminum 4.97 mg /L 0.10 99 95 105 0.001 Iron 4.94 mg /L 0.030 99 95 105 Manganese 4.87 mg /L 0.010 97 95 105 0.030 Potassium 49.7 mg /L 0.50 99 95 105 0.030 Zinc 0.950 mg /L 0 010 95 95 105 0.0010 Sample ID: ICSA 5 Interference Check Sample A Zinc 0.482 mg /L 10/02/13 14:17 Aluminum 480 mg /L 0.10 96 80 120 Iron 173 mg /L 0.030 86 80 120 0.030 Manganese - 0.0130 mg /L 0.010 Iron 2.48 mg /L 0.030 Potassium - 0.0149 mg /L 0.50 Manganese 2.48 mg /L 0.0010 Zinc 0.00244 mg /L 0.010 Zinc 0.473 mg /L 0.010 Sample ID: ICSAB 5 Interference Check Sample AB 10/02/13 14:21 Aluminum 484 mg /L 0.10 97 80 120 Iron 176 mg /L 0.030 88 80 120 Manganese 0.435 mg /L 0.010 87 80 120 Potassium - 0.00884 mg /L 0.50 Zinc 0.835 mg /L 0.010 84 80 120 Method: E200.7 Run: ICP4- C_131002A Batch: 39227 Sample ID: MB -39227 4 Method Blank 99 70 130 Run: ICP4- C_131002A 10/02/13 15:10 Aluminum 2.44 mg /L ND mg /L 0.01 70 130 1.5 20 Iron 2.42 mg /L ND mg /L 0.004 70 130 2.3 20 Manganese 0.463 mg /L 0.0006 mg /L 0.0002 70 130 2.3 20 Zinc 0.002 mg /L 0.001 Sample ID: LCS3 -39227 4 Laboratory Control Sample Run: ICP4- C_131002A 10/02/13 15:28 Aluminum 2.55 mg /L 0.030 102 85 115 Iron 2.49 mg /L 0.030 100 85 115 Manganese 2.47 mg /L 0.0010 99 85 115 Zinc 0.482 mg /L 0.010 96 85 115 Sample ID: C13091010- 004CMS3 4 Sample Matrix Spike Run: ICP4- C_131002A 10/02/13 15:47 Aluminum 2.54 mg /L 0.030 100 70 130 Iron 2.48 mg /L 0.030 96 70 130 Manganese 2.48 mg /L 0.0010 97 70 130 Zinc 0.473 mg /L 0.010 94 70 130 Sample ID: C13091010- 004CMSD3 4 Sample Matrix Spike Duplicate Run: ICP4- C_131002A 10/02/13 15:50 Aluminum 2.52 mg /L 0.030 99 70 130 1.1 20 Iron 2.44 mg /L 0.030 94 70 130 1.5 20 Manganese 2.42 mg /L 0.0010 95 70 130 2.3 20 Zinc 0.463 mg /L 0.010 91 70 130 2.3 20 Method: E200.7 Batch: R179083 Qualifiers: RL - Analyte reporting limit. MDC - Minimum detectable concentration ND - Not detected at the reporting limit. Page 11 of 26