2014-06-09_HYDROLOGY - M1977342

• Permit No: M1977342
• IBM Index Class Name: Hydrology
• Doc Date: 6/9/2014
• Doc Name: Submittal of Annual Water Monitoring Report
• From: Climax
• To: DRMS
• Permit Index Doc Type: Hydrology Report
• Email Name: PSH
• Media Type: D
• Archive: No

CMC—Henderson Operations
' DRMS 2013 Annual Water Monitoring Report
June 2014
' Table of Contents
ExecutiveSummary............................................................................................................ 1
' 1.0 Introduction.............................................................................................................. 3
2.0 Baseline Monitoring................................................................................................. 3
3.0 Discussion of Annual Water Monitoring Data........................................................ 3
' 3.1 Henderson Mine................................................................................................... 3
3.1.1 Point of Compliance Sampling Location: MNGW-1 ...................................4
3.1.2 Surface Water Sampling Location: BG-20................................................... 4
3.1.3 Surface Water Sampling Location: CC-10...................................................4
3.1.4 Surface Water Sampling Location: CC-30. .4
3.2 Henderson Mill.....................................................................................................4
' 3.2.1 Point of Compliance Sampling Location: MLGW-7.................................... 5
3.2.2 Surface Water Sampling Location: WFR-20................................................ 5
3.2.3 Surface Water Sampling Location: WFR-40................................................ 5
' 4.0 Groundwater Studies at the Mill.............................................................................. 5
5.0 Conclusion............................................................................................................... 6
6.0 References................................................................................................................ 7
' Figures
Figure 1, Sampling Locations, Henderson Mine
Figure 2, Sampling Locations, Henderson Mill
Tables
' Table 1, Annual Water Monitoring Data, Henderson Mine
Table 2, Annual Water Monitoring Data, Henderson Mill
1 Trend Evaluation
' Trend Evaluation 1, MNGW-1: Fe, Mn, Se, and Zn
Trend Evaluation 2, MNGW-1: Specific Conductivity
Trend Evaluation 3, MNGW-l: pH
Trend Evaluation 4, MNGW-1: Sulfate
Trend Evaluation 5, BG-20: Fe, Mn, Se, and Zn
Trend Evaluation 6, BG-20: Specific Conductivity
' Trend Evaluation 7, BG-20: pH
Trend Evaluation 8, BG-20: Sulfate
Trend Evaluation 9, CC-10: Fe, Mn, Se, and Zn
Trend Evaluation 10, CC-10: Specific Conductivity
Trend Evaluation 11, CC-10: pH
Trend Evaluation 12, CC-10: Sulfate
' Trend Evaluation 13, CC-30: Fe, Mn, Se, and Zn
' i