REP34915

• Permit No: M1977342
• IBM Index Class Name: Report
• Doc Date: 9/24/2001
• Doc Name: HENDERSON MILL TAILING POND HYDROLOGY REPORT
• Media Type: D
• Archive: No

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' TABLE OF CONTENTS
RESULTS OF FLOOD MODELING DURING THE PMF ..................................... ...................................... 7
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POST FLOOD CONSIDERATIONS ...................................................................... ...................................... 8
Decant Spillway Operation .................................................................................. ...................................... 8
Bypass System Operation .................................................................................. ...................................... 9
' Tailing Pond Embankment Stability .................................................................... ...................................... 9
SUMMARY .............................................................................................................. ....................................11
' APPENDIX A - Applicability of the Probably Maximum Precipitation (PMP) Portion of the Study
Titled "Site-Specific Meteorological and Hydrological Study of the Williams Fork
' Drainage Basin" for the Henderson Mill Tailing Pond Drainage Basin - February
2001, by Applied Weather Associates.
' APPENDIX B- "Henderson Dam Seepage and Stability Analysis for Elevated Decant Pond
Conditions" -July 2001, by URS Corp.
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