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2004-10-13_REVISION - M1978116
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2004-10-13_REVISION - M1978116
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Last modified
6/15/2021 2:47:34 PM
Creation date
11/21/2007 12:58:03 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1978116
IBM Index Class Name
Revision
Doc Date
10/13/2004
Doc Name
Responses to Questions of PAR
From
Cotter Corporation
To
DMG
Type & Sequence
AM1
Media Type
D
Archive
No
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• 4. Anew map, Facilities Plan Map C-2, is included to show the berms that are <br />planned to divert stormwater from the upland area north and east of the surface <br />facilities away from the toe of the waste rock dump, haul road, and ore stockpiles. <br />These berms will be constructed to sufficient size and shape to handle a 10-yeaz <br />24-hour precipitation event (see Appendix A). This stormwater will enter the <br />existing drainage ditch on the northeast side of the county road near where it does <br />currently. The road is built-up enough to prevent stormwater from running across <br />it, onto the Pad area. The berms will be maintained during mining and rebuilt, as <br />needed, after reclamation is completed. <br />The beans, previously mentioned for hazazdous material spill containment, will <br />also contain the stormwater that falls directly on the storage portion of the Pad <br />area. Furthermore, the safety berms required to be in place at the top of the old <br />waste rock dump, at the elevation of the portal, will contain the stormwater that <br />falls directly on the old dump top (portal bench) and the ramp portion of the haul <br />road. <br />Stormwater falling directly on the waste rock dump and ore stockpile area will <br />partly soak in. That which runs off (see Appendix B) will be retained in low azeas <br />that will be constructed and maintained at both the northwest corner and south <br />end of the dump/stockpile azea, shown on map, Facilities Plan Map C-2, as <br />catchments. <br />i 1 <br />U <br /> <br />
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