2011-08-01_REPORT - C1980007 ‎(5)‎

• Permit No: C1980007
• IBM Index Class Name: REPORT
• Doc Date: 8/1/2011
• Doc Name: 2010 Annual Hydrology Report
• From: HydroGeo, Inc
• To: DRMS
• Annual Report Year: 2010
• Permit Index Doc Type: Hydrology Report
• Email Name: TAK
• Media Type: D
• Archive: No

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West Elk Mine 2010 Annual Hydrology Report iv
3.6 Surface Water and Groundwater Monitoring Methodology 38
4.0 MINE WATER MANAGEMENT ACTIVITIES 40
4.1 Mine Water Balance 40
4.2 Water Rights 42
4.3 Sedimentation Ponds 42
4.3.1 Ponds MB -1 and MB -2R 42
4.3.2 Ponds MB -3, MB -4, and MB -5 43
4.3.3 Ponds FW -1 and FW -2 43
4.3.4 RPE Pond and NSSA Pond 43
4.3.5 Pond SG -1 43
4.3.6 Mine Water Treatment Polishing Ponds 43
4.3.7 WWTP Polishing Pond 44
4.4 Mine Water Inflows 44
4.4.1 NW Panels Sealed Sump 44
4.4.2 NE Panels Sealed Sump 44
4.5 Colorado Department of Public Health and Environment, Colorado
Discharge Permit System (CDPS) Summary 44
4.5.1 CDPS Permit CO- 0038776 44
4.5.1.1 Outfall 007 Amendments 44
4.5.1.2 Outfall 017 Amendments 45
4.5.1.3 Bio- Monitoring Testing for Toxicity 45
4.5.2 Sanitary Wastewater 45
4.5.3 Sedimentation Ponds 45
4.6 Permit Compliance 47
4.6.1.1 Outfall 007 (Waste Water Treatment Pond (WWTP) 47
4.6.1.2 Outfalls 005, 008, and 009, 47
4.6.1.3 Outfall 014 47
4.6.1.4 Outfall 015 47
4.6.1.5 Outfalls 004 and 016 50
4.6.1.6 Outfalls 011, 012, 013, 017,018 and 019 50
July 2011 HydroGeo, Inc.