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2008-08-21_REVISION - M1978091UG
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2008-08-21_REVISION - M1978091UG
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Last modified
6/15/2021 5:39:01 PM
Creation date
9/3/2008 7:58:32 AM
Metadata
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Template:
DRMS Permit Index
Permit No
M1978091UG
IBM Index Class Name
REVISION
Doc Date
8/21/2008
Doc Name
Amendment application
From
Gault Group Inc.
To
DRMS
Type & Sequence
AM3
Email Name
RCO
Media Type
D
Archive
No
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Deadman Gulch Realignment <br />Upon completion of the waste rock removal effort, Deadman gulch flows will be released to their <br />native channel pathway (tentatively identified within Figure B.2). This will be accomplished in a <br />step-wise fashion in order to ensure that the flows are returned to a pathway devoid of any <br />residual waste rock material. Flows will be maintained within the amended channelization <br />features until all waste rock is removed. The native channel area will be re-contoured to reflect <br />the native topography. Flows, when released from their containment features will then occupy <br />this pathway and continue down the natural course of the Deadman Gulch/Fault system. Prior to <br />the release of flows from the amended containment system, the native flow pathway will be <br />tested to confirm the absence of any waste rock residue. Samples of soil/alluvium will be taken <br />along the length of the re-established flow pathway and analyzed for acid base accounting <br />parameters, as well as metals content. The results will be compared to other native channel <br />characteristics to define the range of acceptable conditions that measure/confirm the absence of <br />the waste rock. The flow system will be re-established during the dry season, and will likely <br />take the form of seeps, rather than a surface expression of flows given the unconsolidated nature <br />of the setting. <br />Level 6 Portal <br />The Level 6 portal will be reclaimed at the termination of all mining activity with the use of a <br />polyurethane foam plug since the portal has a demonstrated history of being dry. The Golden <br />Wonder underground workings have been sufficient to contain and route encountered water back <br />into the underground system. There have been no surface discharges from the portal for years. <br />The workings occur relatively high in altitude and thus do not gain a significant amount of head <br />pressure. The underground water is a reflection of surface melt, and is quickly abated by the <br />existing fractures and workings within the mountain. Since mining activities in the future will be <br />accomplished in much the same way as they have in the past, it is reasonable to assume that <br />water will be managed and will not reach the surface. Therefore the use of PUF seal should be <br />adequate for this portal. <br />The portal will be PUF sealed and `anchored' into the side walls with the use of re-bar. The final <br />portion of the portal will be back-filled as part of the waste rock removal effort. The overlying <br />material will be part of the waste rock storage, and will ultimately be capped with alluvium. <br />11
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