GENERAL43932

• Permit No: C1981013
• IBM Index Class Name: General Documents
• Doc Date: 3/30/1994
• Doc Name: Response to stips 52 and 67
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

Table of Contents
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I. Quantitative Impacts of Mining .................................. 1
Surface Water .......................................... 1
Groundwater ........................................... 8
II. Water Quality Impacts ....................................... 23
Surface Water .......................................... 23
Golden Eagle Mine .................................. 23
New Elk Mine ..................................... 27
Groundwater ...........................................31
New Elk Mine ......................... .. 31
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Conclusion ............................................ 31
References ................................................34
Figures
Figure 1 Purgatoire River Minimum Monthly Flow vs. Time, Stonewall, Colorado,
1978-1981
Figure 2 Purgatoire River Minimum Monthly Flow vs. Time, Madrid, Colorado, 1972-
1992 ......................................... .. 2
Figure 3 Conductance and Flow, Stonewall, Colorado
Figure 4 Conductance and Flow, Madrid, Colorado .................. .. 7
Figure 5 Shafts and Holes Inflow/Acre by Year & Seepage Rate/Acre by Year .. . 19
Figure 6 Observed Drawdown at Short Distance from Golden Eagle ........ .. 20
Figure 7 Water Quality (Stream and Alluvium) ..................... .. 25
Figure 8 Water Quality (Stream and Alluvium) near the New Elk Waste Dump .. . 28
Figure 9 Water Quality (Stream and Alluvium) near the New Elk Waste Dump .. . 32
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