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REV91929
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Entry Properties
Last modified
8/25/2016 3:13:25 AM
Creation date
11/21/2007 11:16:12 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1984041
IBM Index Class Name
Revision
Doc Date
1/26/1990
Doc Name
APPLICATION FOR AMENDMENT OF 112 PN M-84-041 EXHIBIT E-RECLAMATION PLAN
Type & Sequence
AM2
Media Type
D
Archive
No
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<br /> <br />Amendment of M-84-041 Exhibit E page 2 <br />II RECLAMATION PROCEDR'~lE DURING OPERATION OF THE NEW SITE <br />The first areas to be reclaimed will be the first steps created by <br />the excavation of ore on the east side of area (C) and the steps <br />created on the north side of area (D) by excavating the machine <br />turning and access road area. The exact demensions of the steps <br />will be determined after the mining is started and the cutting <br />characteristics of the rock and machine can be studied in greater <br />detail. However, it is anticipated that the steps will have <br />nearly equal riser and tread demensions which may be as little as <br />18 inches or as great as 3 feet. This will produce an overall cut <br />rock slope of 1 horizontal to 1 vertical, however the tread <br />portion of the step cut will provide a neat machine cut horizontal <br />surface for the placement of backfill material to support <br />revegetation. The riser portion of the step cut will be vertical, <br />or nearly so, but will be low enough to be accessable by man or <br />wildlife. <br />Reclamation of this slope will consist of placement of overburden- <br />topsoil material on the treads of completed step cuts and seeding <br />for revegetation in the fall. Overburden-topsoil placement will <br />take place while the step-cut tread can be reached with a loader <br />bucket from the active mine surface. <br />The anticipated rate of excavation of the mine is illustrated on <br />the reclamation map, Exhibit E. The number of steps created each <br />year decreases as the mine surface lowers and becomes larger in <br />area. <br />The waste rock stockpile area (E) will receive waste rock from <br />areas (C) and (D). This material will be placed in the northerly <br />end of the short narrow valley on area (E) until the valley is <br />filled to nearly the same elevation as the ridges on both sides, <br />creating a fill slope on the southern end of 1.5:1. This slope <br />will advance southerly as waste rock is dumped from the top of the <br />fill. The top surface of the fill will be reclaimed continuously <br />as it advances southerly, leaving only sufficient room at the edge <br />of the fill for truck turning. Reclamation of this surface will <br />be accomplished by placing 6 to 12 inches of overburden-topsoil <br />from either stockpiles of this material or from areas that are <br />being stripped ahead of mining. Seeding of all areas receiving <br />soil cover will be done in the fall or early spring. <br />The topsoil stockpiles in areas (E), (F) and (I) will remain <br />largely undisturbed for several years after placement, therefore, <br />they will be seeded in the fall of 1990 to provide stabilization. <br />JEROME F. GAMBA & ASSOC. <br />CONSULTING ENGINEERS <br />
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