REP35532

• Permit No: C1981018
• IBM Index Class Name: Report
• Doc Date: 2/1/1994
• Doc Name: 1993 AHR
• Annual Report Year: 1993
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

TABLE OF CONTENTS
1
1.0 INTRODUCTION .................................................... 1
' 2.0 SUMMARY OF HYDROLOGY MONITORING DATA ........................... 2
2.1 Description of the Deserado Mine Hydrologic Monitoring Program ......... 2
' 2.1.1 Surface Water Monitoring Program .......................... 2
2.1.2 Ground Water Monitoring Program ........................... 3
' 2.2 Summary and Analysis of Deserado Mine Hydrology Data ::::::::::::::::.
2.2.1 Surface Water Data 5
5
2.2.2 Ground Water Monitoring Data .............................. 6
2.2.2.1 Alluvial Water Level Data ........................... 6
2.2.2.2 Alluvial Water Quality Data .......................... 6
t 2.2.2.3 Bedrock Water Level Data ::::::::::::::::::::::::::.
2.2.2.4 Bedrock Water Quality 8
11
2.2.2.5 Mine Water Balance .............................. 11
' 2.2.2.6 NPDES Discharges and Whole Effluent Testing
...... 13
2.3 :::
:
Red Wash Alluvial Monitoring Program ......... ...... ...... 16
' 3.0 HYDROLOGY AND MINE DEVELOPMENT ................................ 18
3.1 Mining Related Hydrologic Impacts ............................... 18
' 3.2
3.3 Comparison of Projected Impacts With Observed Impacts ::::::::::::::
Significance of Impacts to Use of Water 18
19
3.4 Effectiveness of Mitigation Measures .............................. 20
' 3.5 Changes Necessary to Minimize Impacts ........................... 20
1

~I