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2020-10-22_PERMIT FILE - C1981012A (4)
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2020-10-22_PERMIT FILE - C1981012A (4)
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Last modified
11/5/2021 11:17:55 AM
Creation date
1/7/2021 9:00:29 AM
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Template:
DRMS Permit Index
Permit No
C1981012A
IBM Index Class Name
Permit File
Doc Date
10/22/2020
Section_Exhibit Name
Section 2.05 Operation and Reclamation Plan
Media Type
D
Archive
Yes
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55 <br /> also provided. The RDA final configuration is shown on Figure 6 Final <br /> Configuration and Figure 11 Cross Section A-A'Final Configuration. As <br /> requested by the Division,the operator commits to obtaining the flattest possible <br /> grades on those areas, which have the potential for flood irrigation. <br /> (d)Topsoil Removal, Storage and Redistribution <br /> Section 2.05.3(5)provides additional information on topsoil resources at the <br /> mine. Topsoil at the New Elk Mine will be stored in stockpiles or acquired from <br /> the topsoil borrow area. The location of the these stockpiles is shown on Map 11- <br /> Sheet 3 East Portal Facilities and the location of the borrow area is shown on Map <br /> 16, Surface Disturbance/Post-mining Land Use, West Portal. Topsoil piles will <br /> be constructed in an oval shape with the top of the pile leveled. A containment <br /> ditch will be constructed around each pile. Topsoil piles will be marked as such <br /> and seeded with the approved rangeland seed mix(Reference Table 26). <br /> Redistribution will be accomplished with scraper and/or frontend loaders and haul <br /> trucks. Topsoil depths will range from 4 inches in the East Portal area to 9 inches <br /> in the RDA. Areas will be ripped to a depth of 18 inches prior to topsoil <br /> redistribution. <br /> The cut area for the rock dust bins at the East Portal causes an increase in the <br /> disturbed area of 0.94 acres as indicated on Figure 14. The estimated depth of <br /> topsoil to be removed is based on the SCS soil data included in Exhibit 14 Soils <br /> Information. The soil in the area has been classified at the P3E —Dargol-Fuera- <br /> Vamer Complex. The typical topsoil layer for this soil type is 5 inches thick with a <br /> sub soil of 23 inches over siltstone. Depth to bedrock ranges from 20 to 40 inches. <br /> A visual inspection of the cut slope area indicates an estimated 9 inches of topsoil. <br /> The actual topsoil and subsoil depth will be evaluated at the time of construction. At <br /> 9 inches of topsoil, 1,140 BCY will be relocated to the Topsoil Storage Pile #1. <br /> Subsoil at 23 inches results in 2,915 BCY of subsoil to be relocated and stored <br /> temporarily at the subsoil storage area west of topsoil storage pile #1. Of the <br /> remaining 13,500 BCY of material in the cut, 4400 BCY will be utilized for fill in <br /> rope slope surface facility and at the breaker building. The 9,050 BCY of <br /> bedrock material will be used on site for berms,outfalls and other civil work. <br /> A small 0.50 acre area of the West Portal located approximately 50 feet due south of <br /> West portal Disposal Pit WP-5 (shown on Map 16) will be disturbed for excavation <br /> to repair the Rope Slope Entry into the New Elk mine. This area has been <br /> classified as pre-law Disturbed No Refuse (DNR). Prior to beginning excavation, <br /> approximately 6 inches of plant growth medium will be stripped and stockpiled <br /> adjacent to the excavation. After completion of excavation and repair work, the <br /> excavation will be backfilled,graded and covered with the stockpiled growth medium. <br /> The cut area for the Bates Portal face up causes an increase in the disturbed area of <br /> 1.57 acres as indicated on Figure 14a. There is an estimated cut volume of 39,000 <br /> BCY. The estimated depth of topsoil to be removed is based on the SCS soil data <br /> included in Exhibit 14 Soils Information.The soil in the area has been classified at the <br /> Section 2.05 RN-7 10/25/2019 <br />
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