2009-05-19_REVISION - M1977285 ‎(31)‎

• Permit No: M1977285
• IBM Index Class Name: REVISION
• Doc Date: 5/19/2009
• Doc Name: EPP ‎(AM-03)‎ Att. P: Drainage; Att. Q: SWMP Repair; Att. R: Rock & Soil Characterization ‎(part 10)‎
• From: Denison Mines
• To: DRMS
• Type & Sequence: AM3
• Email Name: RCO
• Media Type: D
• Archive: No

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Contents
Section 1 Introduction'
1.1 Location ................................................................................................... 1-1
1.2 Procedure and Approach ......................................................s.......:......

Section 2 Topaz Mine
2.1 Existing Drainage Conditions .............................................................. 2-1
2.2 Tetra Tech Drainage Plan ...................................................................... 2-1
2.3 Peak Discharge Comparison ................................................................ 2-1
2.4 Surface Water Control Structure Design ............................................ 2-2
2.4.1 Channel Design ....................................................................... 2-2
2.4.2 Berm Design ............................................................................ 2-4
2.5 Conclusions and Recommendations ................................................... 2-5
Section 3 West Sunday Mine
3.1 Existing Drainage Conditions .............................................................. 3-1
3.2 Drainage Plan ......................................................................................... 3-1
3.3 Peak Discharge Estimate ....................................................................... 3-1
3
4 Surface Water Control Structure Design ............................................ 3-2
. 3.4.1 Channel Design ....................................................................... 3-2 •
3.4.2 Berm Design ............................................................................ 3-3
3.5 Conclusions and Recommendations ................................................... 3-4
Section 4 St. Jude Mine
4.1 Existing Drainage Conditions .............................................................. 4-1
4.2 Drainage Plan ......................................................................................... 4-1
4.3 Peak Discharge Estimate ....................................................................... 4-1
4.4 Surface Water Control Structure Design ............................................ 4-2
4.4.1 Channel Design ....................................................................... 4-2
4.4.2 Berm Design ............................................................................ 4-3
4.5 Conclusions and Recommendations ................................................... 4-4
Section 5 Carnation Mine
5.1 Existing Drainage Conditions .............................................................. 5-1
5.2 Drainage Plan ......................................................................................... 5-1
5.3 Peak Discharge Estimate ....................................................................... 5-1
5.4 Surface Water Control Structure Design ............................................ 5-2
5.4.1 Channel Design ....................................................................... 5-2
5.4.2 Berm Design ............................................................................ 5-3
5.5 Conclusions and Recommendations ................................................... 5-4
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0154985 - DenlsonWask Order I - Sunday Mims Drainage StudyARaporBRral Repontplnal Sunday Mmes Drainage Rspar _052208doc