2011-08-08_REVISION - M1977493 ‎(36)‎

• Permit No: M1977493
• IBM Index Class Name: REVISION
• Doc Date: 8/8/2011
• Doc Name: EPP- Water Quality Monitoring Plan.
• From: Climax Molybdenum
• To: DRMS
• Type & Sequence: TR18
• Media Type: D
• Archive: No

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Water Quality Monitoring Plan Climax Molybdenum Company
Version: R1 Permit No. M -1977 -493
1.0 PURPOSE 1
2.0 SITE DESCRIPTION 2
2.1 General Setting 2
2.2 Site Hydrogeology 2
2.3 Existing Monitoring Network 3
3.0 CLIMAX DRAINAGE BASINS AND SELECTION OF MONITORING SITES 4
3.1 Arkansas River Watershed 4
3.1.1 Existing and Potential Future Uses of Groundwater 4
3.1.2 Location and Description of Classified Stream Segments 4
3.1.3 Potential Contaminant Sources 4
3.1.4 Hydrogeology 5
3.1.5 Monitoring Sites 5
3.2 Eagle River Watershed 6
3.2.1 Existing and Potential Future Uses of Groundwater 6
3.2.2 Location and Description of Classified Stream Segments 6
3.2.3 Potential Contamination Sources 6
3.2.4 Hydrogeology 6
3.2.5 Monitoring Sites 7
3.3 Tenmile Creek Watershed 8
3.3.1 Existing and Potential Future Uses of Groundwater 8
3.3.2 Location and Description of Classified Stream Segments 9
3.3.3 Potential Contamination Sources 9
3.3.4 Hydrogeology 9
3.3.5 Monitoring Sites 10
4.0 SELECTION OF MONITORING PARAMETERS AND NUMERIC PROTECTION LEVELS
(NPLS) 11
4.1 Monitoring Parameters 11
4.1.1 POC Groundwater Monitoring 11
4.1.2 Internal Monitoring Sites 12
4.2 Numeric Protection Levels 13
4.2.1 Arkansas River Watershed 13
4.2.2 Eagle River Watershed 14
4.2.3 Tenmile Creek Watershed 15
5.0 MONITORING SCHEDULE, DATA ANALYSIS AND REPORTING 17
5.1 POC Groundwater Monitoring Sites 17
5.1.1 Monitoring Schedule 17
5.1.2 Data Analysis 17
5.2 Internal Monitoring Sites 18
5.2.1 Monitoring Locations 18
5.2.2 Monitoring Schedule 19
EPP — Appendix C
TABLE OF CONTENTS
August, 2011