2016-12-09_HYDROLOGY - M1977493

• Permit No: M1977493
• IBM Index Class Name: HYDROLOGY
• Doc Date: 12/9/2016
• Doc Name: Request for Demonstration of Compliance
• From: Climax Molybdenum
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

Demonstration of Compliance Climax Molybdenum Company
With Regulation 41 Permit M-1977-493
TABLE OF CONTENTS
1.0 INTRODUCTION.............................................................................................................1
1.1 Regulatory and Historical Framework..................................................................1
2.0 BACKGROUND INFORMATION....................................................................................3
2.1 Well Construction Summary.................................................................................3
2.2 Water Quality Data...............................................................................................3
2.3 Manganese Background Information....................................................................4
3.0 ARKANSAS RIVER WATERSHED ................................................................................6
3.1 Potential Contaminant Sources, EPFs and Reclamation......................................6
3.2 Data Evaluation ...................................................................................................7
3.2.1 Analysis of Available Information to Determine or Estimate Ambient Quality.......7
3.2.2 Ambient-Based Manganese and pH Values for ARwell ........................................8
3.2.3 Ambient-Based Manganese Value for ARK-MW-001 D.........................................9
4.0 EAGLE RIVER WATERSHED......................................................................................11
4.1 Potential Contaminant Sources and EPFs.........................................................11
4.2 Data Evaluation .................................................................................................13
4.2.1 Analysis of Available Information to Determine or Estimate Ambient Quality.....15
4.2.2 Ambient-Based Manganese Values for EVMW-3S............................................. 16
4.2.3 Ambient-Based Manganese Value for EVMW-3D...............................................17
4.2.4 Ambient-Based Manganese Value for EV-MW-004............................................18
5.0 TENMILE CREEK WATERSHED .................................................................................21
5.1 Potential Contaminant Sources and EPFs.........................................................21
5.2 Data Evaluation .................................................................................................22
5.2.1 Analysis of Available Information to Determine or Estimate Ambient Quality.....22
5.2.2 Ambient-Based Manganese and pH Values for TM-MW-002D...........................23
5.2.3 Ambient-Based pH NPL for GW#2......................................................................24
6.0 REFERENCES..............................................................................................................26
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