2010-03-10_PERMIT FILE - M2008012

• Permit No: M2008012
• IBM Index Class Name: PERMIT FILE
• Doc Date: 3/10/2010
• Doc Name: Storm water management plan ‎(part 1)‎
• From: Nuvemco, LLC
• To: DRMS
• Email Name: GRM
• Email Name: ACS
• Email Name: DB2
• Media Type: D
• Archive: No

TABLE OF CONTENTS
INTRODUCTION .............................................................................. ..............................
STUDYAREA .................................................................................... ............................... 1
Mine Portal and Temporary Ore Stockpile ...................................... ............................... 2
SedimentPond #1 ............................................................................ ............................... 2
SedimentPond #2 ............................................................................ ............................... 2
PEAKRUNOFF ................................................................................. ............................... 2
C — Rational Method Runoff Coefficient ......................................... ............................... 3
i — Rainfall Intensity ......................................................................... ............................... 3
SEDIMENTPOND # 1 ....................................................................... ............................... 3
Timeof Concentration ..................................................................... ............................... 3
PondOutlet ...................................................................................... ............................... 4
RiprapDesign .................................................................................. ............................... 4
MaximumRunoff Volume ............................................................... ............................... 5
SEDIMENTPOND # 2 ....................................................................... ............................... 6
Timeof Concentration ..................................................................... ............................... 6
PondOutlet ...................................................................................... ............................... 6
RiprapDesign .................................................................................. ............................... 7
MaximumRunoff Volume ............................................................... ............................... 7
SEDIMENTYIELD .......................................................................... ............................... 7
FENCE ................................................................................................ ............................... 8
REFERENCES ................................................................................... ............................... 8
FIGURES
Figure 1 Facility Map
March S, 2010
APPENDICES
Appendix A
Photographs
Appendix B
Colorado Hydrologic Data
Appendix C
NOAA Atlas 2, Volume III, Figures 20 -31
Appendix D
Time of Concentration and Peak Discharge, Sediment Pond #1
Appendix E
Time of Concentration and Peak Discharge, Sediment Pond #2
Appendix F
Detention Pond Outlet Calculations, Sediment Pond #1
Appendix G
Detention Pond Outlet Calculations, Sediment Pond #2
Appendix H
Riprap Calculations, Sediment Pond #1
Appendix I
Riprap Calculations, Sediment Pond #2
March S, 2010