REP09616

• Permit No: C1981012
• IBM Index Class Name: Report
• Doc Date: 4/22/2002
• Doc Name: 2001 AHR
• From: Greystone
• To: DMG
• Annual Report Year: 2001
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

TABLE OF CONTENTS
1.0 INTRODUCTION......
1.1 Site Description ..............................
1.2 Monitoring Program .......................
............................................................................. I
............................................................................. 1
............................................................................. 4
2.0 MONITORING METHODS ............................................................................................ 13
2.1 Surface Sites ................................................................................................................ 13
2.2 Groundwater Sites ....................................................................................................... 13
3.0 HYDROLOGIC CONSEQUENCES ............................................................................... 14
3.1 Water Quantity ........................................................................................................ .... 14
3.1.1 Springs and Seeps ............................................................................................. .... 14
3.1.2 Purgatoire River System [Surface (Streams and Rivers), Ponds and Direct
Discharges, and Alluvial Groundwater] ........................................................... .... 14
3.1.3 Groundwater ..................................................................................................... .... 15
3.1.4 Piezometers ....................................................................................................... ....15
3.2 W ater Quality .......................................................................................................... .... 15
3.2.1 Springs and Seeps ............................................................................................. .... 15
3.2.2 Surface Water (Streams and Rivers, and Ponds and Direct Discharges) .......... .... 16
3.2.3 Alluvial Groundwater ....................................................................................... .... 16
3.2.4 New Elk Mine Water ........................................................................................ .... 23
4.0 MITIGATIVE MEASURES ............................................................................................ 28
5.0 MONITORING PROGRAMS FOR Z002 ....................................................................... 29
' 6.0 REFERENCES ................................................................................................................30
' FIGURES
Figure 1.1-1 Generalized Stratigraphic Column of Mesozoic and Cenozoic Era Strata in the
' Raton Mesa Region from Dolly and Meissner, 1977 ............................................. 2
Figure 3.2-1 Purgatoire River Surface Sites .............................................................................. 17
Figure 3.2-2 New Elk Alluvial Wells ........................................................................................ 19
' Figure 3.2-3 New Elk, River Backfill ........................................................................................ 23
Figure 3.2-4 Recovery of Mine Water at Sealed New Elk Mine ............................................... 25
Figure 3.2-5 Stiff Diagrams of Mine Water Quality ................................................................. 26