2011-05-11_HYDROLOGY - M1977300 (10)

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• www.efw#ab.com +Piena MT 677-472-0711 • Billings, Mi B08-T35-4469 • Casper, WY888-235-8515 A EaskmSdcr t8l1 c rvf 866 666'-7175 oRapid City, SD 888-672-1225 • College Station, TX 888-690-2218 QA/QC Summary Report Prepared by Casper, WY Branch Client: Cotter Corporation Report Date: 03/01 /11 Project: Schwartz GW 01/27/10 S25575-S25576 Work Order: C11010885 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Clual Method: E200.8 Batch: R142459 Sample ID: LRB 9 Method Blank Run: ICPMS2- C_110203A 02/03/11 12:22 Aluminum ND mg/L 0.20 Antimony ND mg/L 0.0010 Arsenic ND mg/L 0.0010 Copper ND mg/L 0.0010 Lead ND mg/L 0.0050 Manganese ND mg/L 0.0050 Silver ND mg/L 0.00020 Thallium ND mg/L 0.00020 Zinc ND mg/L 0.0050 Sample ID: LFB 9 Laboratory Fort ified Blank Run: ICPMS2-C_110203A 02/03/11 12:29 Aluminum 0.0531 mg/L 0.0010 106 85 115 Antimony 0.0523 mg/L 0.0010 104 85 115 Arsenic 0.0529 mg/L 0.0010 106 85 115 Copper 0.0533 mg/L 0.0010 106 85 115 Lead 0.0533 mg/L 0.0010 107 85 115 Manganese 0.0529 mg/L 0.0010 106 85 115 Silver 0.0206 mg/L 0.0010 103 85 115 Thallium 0.0528 mg/L 0.0010 106 85 115 Zinc 0.0549 mg/L 0.0010 110 85 115 Sample ID: 011010710-001DMS4 9 Sample Matrix Spike Run: ICPMS2-C_110203A 02/03/11 13:17 Aluminum 0.052 mg/L 0.10 104 70 130 Antimony 0.054 mg/L 0.0010 108 70 130 Arsenic 0.055 mg/L 0.0010 108 70 130 Copper 0.22 mg/L 0.010 110 70 130 Lead 0.055 mg/L 0.0010 104 70 130 Manganese 0.057 mg/L 0.010 103 70 130 Silver 0.018 mg/L 0.010 89 70 130 Thallium 0.052 mg/L 0.00040 104 70 130 Zinc 0.63 mg/L 0.010 70 130 A Sample ID: C1 1010710-001 DMSD 9 Sample Matrix Spike Duplicate Run: ICPMS2-C_110203A 02/03/11 13:51 Aluminum 0.053 mg/L 0.10 105 70 130 20 Antimony 0.055 mg/L 0.0010 110 70 130 1.4 20 Arsenic 0.055 mg/L 0.0010 109 70 130 0.3 20 Copper 0.22 mg/L 0.010 119 70 130 2.0 20 Lead 0.056 mg/L 0.0010 106 70 130 1.4 20 Manganese 0.056 mg/L 0.010 102 70 130 1.2 20 Silver 0.019 mg/L 0.010 95 70 130 6.2 20 Thallium 0.053 mg/L 0.00040 107 70 130 2.2 20 Zinc 0.64 mg/L 0.010 70 130 1.1 20 A Qualifiers: RL - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In accordance with the method % recovery is not calculated. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration Page 11 of 24