2024-03-18_PERMIT FILE - C1981008 ‎(14)‎

• Permit No: C1981008
• IBM Index Class Name: Permit File
• Doc Date: 3/18/2024
• Doc Name: Topsoil Handling, Stockpiling and Redistribution
• Section_Exhibit Name: Section 2.05.4‎(2)‎‎(d)‎ Topsoil Handling, Stockpiling and Redistribution
• Media Type: D
• Archive: No

Section 2.05.4(2)(d) Page 12 April 2022 (PR-09)
will be reclaimed to Prime Farmland (also refer to Section 2.06.6) and the other areas will be
reclaimed to dryland pasture. All areas will have approximately 24 inches of Bench 1 placed prior
to topsoil replacement. Please see Map 2.05.4-4, which delineates currently reclaimed areas,
unreclaimed areas, and the prime farmland area on the ERMR Property. Table 2.05.4(2)(d)-4
below provides the overall topsoil balance for these remaining areas.

Table 2.05.4(2)(d)-4 Topsoil Balance North of BB & West of 2700 Road
Area Area
(acres)
Available
Thickness
(inches)
Stockpiled
Topsoil1
Dryland Pasture Areas 89 12.2 171,470
Prime Farmland Area 4 24 13,266
Total 184,736
1Stockpiled topsoil values are from Table 2.05.4(2)(d)-2 Topsoil Stockpile Inventory

Topsoil from Pile 12 will be used for differential settling on the ERMR-Lloyd and ERMR-Benson
West irrigated pasture areas if necessary. Please see Section 12 below for further discussion on
differential settling management plan.

Topsoil piles D and C south of the facilities area will remain post mine for use at the discretion of
the surface landowner, or if deemed necessary used for differential settling mitigation on irrigate
pasture reclamation areas within the permit boundary.

Topsoil pile H will be taken to an ERMR property outside of the permit boundary. New Horizon
currently has an adequate amount of topsoil necessary to complete reclamation for the dryland
pasture areas on or directly adjacent to the ERMR-Johnson property, and this extra topsoil is a
long term benefit to an adjacent ERMR property.

Please see Map 2.05.4-4 for locations of topsoil piles discussed in this section.

10. Topsoil Preparation Procedures Prior to Seeding

This discussion has been divided into each of the three main post-mine land uses: Dryland Pasture
(DP), Irrigated Pasture (IP), and Irrigated Cropland (IC). Irrigated Cropland covers both prime and
non-prime farmland areas. In general, topsoil will not be placed while saturated, and will be
replaced along the contour, whenever feasible, to minimize potential erosion and topsoil/spoil
interface slippage problems. This practice will be discontinued on steep slopes where the safety of
the equipment operator is in jeopardy.