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2020-08-03_REVISION - M1980244 (2)
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2020-08-03_REVISION - M1980244 (2)
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Entry Properties
Last modified
8/10/2020 9:44:19 AM
Creation date
8/10/2020 8:31:11 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Revision
Doc Date
8/3/2020
Doc Name Note
Exhibit E
Doc Name
Adequacy Review - Preliminary
From
CC&V
To
DRMS
Type & Sequence
AM13
Email Name
TC1
MAC
ERR
JPL
BFB
Media Type
D
Archive
No
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<br />Cripple Creek & Victor Gold Mining Company Exhibit E Cresson Project Amendment 13 9 <br /> ECOSA, which will blend with the backfilled Wildhorse and Altman portions of the East Cresson mine area (see Drawing F-1). Backfilling is planned in the Schist Island and Globe Hill portions of the North Cresson Mine area, the East Cresson Mine area, and portions of Main Cresson Mine area, as shown in drawings provided in Exhibit F. The amount of backfilling is dependent on potentially changing conditions such as project economics and may vary from that shown on those drawings. Reclamation of each of the OSAs and backfilled portions of the mine areas is addressed separately below. <br />It continues to be CC&V’s objective to perform concurrent reclamation of portions of these areas at the Cresson Project while other portions remain active in development and, thus, to achieve partial reclamation prior to completion of Cresson Project. The schedule used to develop the financial warranty estimate for Amendment 13, as presented in Exhibit L reflects a comprehensive and conservative estimate of the annual costs required for final closure of the Cresson Project. <br />SGOSA <br />The SGOSA will continue to be reclaimed on a concurrent basis where possible during ongoing development of MLE2 - Amendment 10 and Amendment 11. When development is completed in the Schist Island phase 1 portion of the North Cresson mine area, the mine area will be backfilled to create the VLF2 Phase 3 pregnant solution storage area (PSSA). Phase 3 will be blended with the SGOSA on the western side as shown on Drawing F-1. Once the maximum footprint has been reached, the out slopes will be graded to final overall grades of approximately 2.5H:1V. Sections of varying steepness will be formed within this overall out slope to generate irregular landforms. The approved final elevation of the SGOSA does not change with Amendment 13 and is approximately 10,600 feet above mean sea level (amsl) as approved in Amendment 9 and Amendment 10. <br />Benches on the order of 8 to 30 feet wide may be retained along the reclaimed slopes at intervals that both reduce the length of “run” (flow path length) of stormwater runoff and provide access for reclamation activities. These benches also may be used to capture and convey stormwater runoff to other areas. <br />Growth medium already stored will allow placement of a minimum of six inches of growth medium on the SGOSA. The soil may be sampled to assess the requirements for soil amendments. Vegetation will be established in accordance with the procedures outlined above in Section 1.4.3. <br />As approved in previous applications, it is anticipated that some slopes may be plated with coarse rock for stormwater runoff protection and to emulate or mimic the rock piles from historic underground mine workings to provide wildlife habitat. These plated areas would not be
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