2013-02-15_REVISION - C1981020 (2)

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areas. The Loma loadout is situated within the D &RGW Railroad right -of -way. It occupies an area historically used for loading sugar beets onto railroad cars. The disturbed area of the loadout is approximately 2.9 acres. All surface water at the loadout drains to a depression at the southeast corner of the disturbed area. The disturbed area is bermed, with a small a silt fence installed adjacent to the low area for filtering of any overflow. Due to the low precipitation experienced in the area (8.8 inches annually), runoff is infrequent, and the small area exemption sediment controls described have proven effective. Due to the small area and low precipitation, little effect on the local hydrologic balance is anticipated. There are also no operations in the area of the loadout that would produce a cumulative effect on the hydrologic balance (the facility is approximately nine miles from any mines). Surface water is monitored upstream and downstream of disturbances in the Munger Canyon drainage and along East Salt Creek above and below the confluence with Munger Canyon. Monitoring locations are shown on Figure 2.3 -5 of the permit application. Alluvial ground water will be monitored downgradient of the proposed waste disposal pile in Munger Canyon and in the Salt Creek alluvium upgradient and downgradient of the Munger creek confluence. The monitoring program will indicate if any change in surface water and ground water quantity and quality occur as a result of the operation. As of December 2007, coal production has ceased, the mine portals have been sealed and backfilled, and final reclamation has been largely completed (remaining projects are limited to reclamation of waste disposal site sediment pond and associated temporary drainage structures, and some remaining road narrowing, culvert removal, and low water crossing construction). After successful reclamation is achieved, the hydrologic functions of the area will be restored. The proposed operation is in compliance with the requirements of this section. IV. Topsoil Narrative information dealing with baseline soil characteristics and depths available for reclamation is located in Section 4.7 of the application. Narrative regarding soil resource information specific to the disturbance associated with the coal mine waste disposal site is found under Site Preparation and Construction, in Section 2.2.5. Analytical data and suitability criteria are presented in permit Tables 4.7 -1 through 4.7 -7. Soil mapping information, including mapping units, sample locations, and stripping depths is shown on permit Figure 4.7 -1, with supplemental sample locations for the coal waste disposal site shown on permit Figure 4.7 -2. Topsoil removal and storage is addressed in permit Sections 24