PERMFILE67693

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 7/30/2007
• Section_Exhibit Name: Section 2.05.6‎(3)‎ Protection of the Hydrologic Balance
• Media Type: D
• Archive: Yes

• quality. These aquifers have not been used for any wells in the surrounding area and cannot be
considered a water resource. The ground water aquifers below the Dakota coals, in the Surro
Canyon Formation, are used in surrounding wells and have better water quality but they will not be
affected by the mining and reclamation of this site. Shale layers below the mined coals prevent
interaction between the spoil and these aquifers, which get their recharge from long distances away
from the mine operation.
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• REVISED MARCH 2006 2.05.6(3)-24