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PERMFILE64096
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PERMFILE64096
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Entry Properties
Last modified
8/24/2016 11:10:06 PM
Creation date
11/20/2007 8:16:44 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980005A
IBM Index Class Name
Permit File
Doc Date
1/26/2005
Section_Exhibit Name
Tab 13 Postmining Land Use
Media Type
D
Archive
Yes
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postmine landowner and must be narrowed. There are approximately 6.3 miles of haul roads that will <br />be totally reclaimed and 8.9 miles of haul roads that will be downsized for postmine landowner use. <br />Haul Roads. There are approximately 6.3 miles of haul road that will need to be reclaimed. The <br />surfacing material will be pushed into road ditches and buried as part of the cut/fill grading (see <br />Grading to Blend worksheetsl. See worksheets (Attachment 13-4j for reclamation costs. Two of the <br />roads, Wolf Creek Ramp and A2, will be reclaimed under the Wolf Creek Downdrain and Lower Wolf <br />Creek grading process. <br />Permanent Roads. There are approximately 8.9 miles of haul roads that will be retained as permanent <br />roads. These roads will be narrowed to 20 foot wide for postmining use. These roads will take the <br />place of jeep trails that existed in the area prior to mining. Refer to worksheets (Attachment 13-4j for <br />reclamation activities. <br />Other Roads <br />There are approximately 2.25 miles of access roads that will ne reclaimed and 3.5 miles of light-use <br />roads that will be reclaimed. Please see worksheets in Attachment 13.4 <br />Indirect Costs <br />The following is an estimate of indirect costs associated with the reclamation of the Seneca 11 Mine. <br />Mobilization and Demobilization. Once the volumes for the various phases of reclamation were <br />determined, the number of shifts, hours per shift, equipment types, operator/operating efficiencies, <br />support equipment, and overall reclamation time span, all of which ultimately affect mobilization and <br />demobilization, had to be determined. The following discussion provides the considerations utilized in <br />determining the equipment fleet needed. <br />Production Shifts. One shift per day was used for topsoiling and finish grading. Two shifts per day <br />was used for open pit backfilling. Shifts were based on an eight-hour period per shift. A conservative <br />operating efficiency of 83 percent was used to account for decreased productivity due to operator <br />efficiency for scrapers. Fifty min/hr was used for dozers due to other factors, taking darkness into <br />consideration. <br /> <br />TR-36 13-55 Revised 11 /04 <br />
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