2011-05-11_HYDROLOGY - M1977300 (3)

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wwwtnef#eb.com B -4h-A-711 • Billings, MT 800-735-4419 • Casper, WY$88-235-8515 Au?dcsf caBrna SAW Im X75 sap d C ly, SO 818-672-1225 • College Station, 1X 888-690-2218 QA/QC Summary Report Prepared by Casper, WY Branch Client: Cotter Corporation Report Date: 03/24/11 Project: Schwartz GW 3/04/11 S25660 Work Order: C11030181 Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual Method: E200.8 Batch: 29236 Sample ID: MB-29236 6 Method Blank Run: ICPMS4-C_110317A 03/17/11 21:49 Antimony ND mg/L 0.0010 Arsenic 0.00137 mg/L 0.0010 Copper 0.0153 mg/L 0.0010 Lead ND mg/L 0.0050 Silver ND mg/L 5.0E-05 Thallium ND mg/L 0.00020 Sample ID: LCS3-29236 6 Laboratory Control Sample Run: ICPMS4-C_110317A 03/17/11 21:56 Antimony 0.573 mg/L 0.050 115 85 115 Arsenic 0.469 mg/L 0.0010 94 85 115 Copper 0.483 mg/L 0.010 94 85 115 Lead 0.517 mg/L 0.050 103 85 115 Silver 0.0510 mg/L 0.010 102 85 115 Thallium 0.501 mg/L 0.10 100 85 115 Sample ID: C11030216-001AMS3 6 Sample Matrix Spike Run: ICPMS4-C_110317A 03/17/11 23:13 Antimony 0.549 mg/L 0.050 110 70 130 Arsenic 0.468 mg/L 0.0010 91 70 130 Copper 0.449 mg/L 0.010 87 70 130 Lead 0.536 mg/L 0.050 107 70 130 Silver 0.0476 mg/L 0.010 95 70 130 Thallium 0.530 mg/L 0.10 106 70 130 Sample ID: 011030216-001AMSD 6 Sample Matrix Spike Duplicate Run: ICPMS4-C_110317A 03/17/11 23:19 Antimony 0.553 mg/L 0.050 111 70 130 0.9 20 Arsenic 0.466 mg/L 0.0010 91 70 130 0.3 20 Copper 0.447 mg/L 0.010 86 70 130 0.4 20 Lead 0.534 mg/L 0.050 106 70 130 0.3 20 Silver 0.0473 mg/L 0.010 95 70 130 0.7 20 Thallium 0.529 mg/L 0.10 106 70 130 0.1 20 Qualifiers: RL - Analyte reporting limit. MDC - Minimum detectable concentration ND - Not detected at the reporting limit. Page 10 of 20