PERMFILE40830

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 6/2/2006
• Section_Exhibit Name: Exhibit 18B Evaluation of Potential Groundwater Inflows Associated w/E Seam Mining
• Media Type: D
• Archive: No

Mayo and Associates, LC
Figure 1 Maximum extent of Cretaceous Interior Seaway. The Uinta and Piceance
Basins are located in eastern Utah and western Colorado, respectively.
Modilied after Williams and Stelck,1975.

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Figure 2 Schematic diagram of western shoreline of the Cretaceous Interior
Seaway. The shoreline locally transgressed and regressed in response to
sea level changes and had an overall eastward migration across the Uinta
Basin into the Piceance Basin during Cretaceous time,
Evaluation of Potential Groundwater Inflows 13 February 24, 2004
Associated with E Seam Mining,
West Elk Mine, Somerset, Colorado