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1998-01-20_REVISION - M1977342
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1998-01-20_REVISION - M1977342
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Entry Properties
Last modified
3/5/2021 11:52:15 AM
Creation date
11/21/2007 10:11:13 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977342
IBM Index Class Name
Revision
Doc Date
1/20/1998
Doc Name
HENDERSON MINE & MILL PN M-77-342 AMENDMENT
From
CLIMAX MOLYBDENUM CO
To
MLRB
Type & Sequence
AM3
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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• Cuts between Stations 111+00 and 126+50 are on side hills where cut and fill <br /> volumes will be balanced in cross section. Large rock is present on much of the <br /> surface and sideslopes are in excess of 20%. Regrading in this section will <br /> reduce the fill slope crowns with nominal backfill along the cut toe. Slopes will be <br /> reduced to gradients that are slightly steeper than the sideslopes at gradients <br /> between 1.51-1:1V and 2.5H:1V. Large rock along this section will create a final <br /> configuration of small open talus slopes between mature timber stands. Stability <br /> is ensured by the rocky components that are present. <br /> At the north end of the project between Stations 159+00 and 176+00 the cut and <br /> fill slopes will be graded to 3H:1V by excavator or dozer slope reduction. <br /> Between Stations 80+00 and 88+00 there will be a single large fill slope filled <br /> with a single large cut slope at the top of the a rocky high point. Construction fill <br /> • gradients are expected to be 1.5H:1V. In final reclamation, efforts will be made <br /> to reduce this slope to a gradient of approximately 2.5H:1V. No backfilling of the <br /> large cut is planned for this segment of the corridor. <br /> All site reclamation construction activities will be performed with appropriate <br /> erosion control measures and BMPs. <br /> 3.8.2 Site Preparation <br /> Regrading of the cut and fill slopes will provide the major portion of site <br /> preparation on the PC3 Conveyor corridor. Dozer and excavator operations will <br /> scarify subgrade materials and lend surface roughness to the disturbances. <br /> Additional ripping will be required on the road right-of-ways to reduce <br /> compaction. No gouging treatments or imprinting operations are contemplated <br /> by this Plan. <br /> 27 <br /> Janwry 16,1998 <br /> PIan.Eoc <br />
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