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PERMFILE130842
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PERMFILE130842
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Entry Properties
Last modified
8/24/2016 10:31:44 PM
Creation date
11/25/2007 10:42:02 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980005A
IBM Index Class Name
Permit File
Doc Date
8/20/2003
Section_Exhibit Name
Tab 13 Postmining Land Use
Media Type
D
Archive
Yes
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Haul Roads. there are approximately 6.3 miles of haul road [ha[ will neetl to be <br /> recl aimed. the surfacing material ui ll be pushed into road ditches and buried as part of <br /> the cut/fill grading (see Grading to Blend worksheets). See worksheets (Attachment 13-4) <br /> for reclamation costs. Tuo of the roads, 4olf Lreek Ramp and A2, will be reclaimed under <br /> the wolf Lreek Doundrain and Lower Wolf Creek grading process. <br />Permanent Roads. There are approximately 8.9 miles of haul roads. These roads will 6e <br />narrowed to 20 foot aide for postmining use. These roads will take the place of jeep <br />[rails that existed in the area prior to mining. Refer to worksheets (Attachment 13-4) <br />for reclamation activities. <br />Other Roads. There are approximately 2.25 miles of access roads that will be reclaimed <br />and 3.5 miles of light-use roads that will be reclaimed. Please see uo rkshee[s in <br />Attachment 13-4. <br />Indirect Costs <br />the follouin9 is an estimate of indirect costs associated ui th the reclamation of the <br />• Seneca II Mine. <br />Mobilization and Demobilization. Once the volumes for the various phases of ref lamation <br />were determined, the number of shifts, hours per shift, equipment types, <br />operator/operating of ticiencies, support equipment, and overall reclamation time span, all <br />of which ultimately affect mobilization and demobilization, had to be determined. The <br />Following discussion provides the considerations utilized in determining the equipment <br />fleet needed. <br />Production Shifts. One shift per day was used for [opsoiling and finish grading. Tuo <br />shifts per day was used for open pit backfil ling. Shifts were based on an ei gh[-hour <br />period per shift. A conservative operating efficiency of 83 percent was used to account <br />(or decreased productivity due to operator efficiency for scrapers. Fifty min/hr was used <br />for dozers due to other lactors, taking darkness into consideration. <br /> <br />13-55 Revised 04/15/94 <br />
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