2009-08-13_PERMIT FILE - C1981019A ‎(4)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 8/13/2009
• Section_Exhibit Name: Rule 2 Permits -ST
• Media Type: D
• Archive: Yes

RULE 2 PERMITS
• The delineated vegetation community types described in this section and indicated on Map 3 of the
existing permit document were used as the basis of the general vegetation inventory. The Consolidation
Coal Company report (January 1985) (Exhibit 10, Item 5) and color aerial photos were used in
combination as the basis for delineating the various vegetation community types within the South
Taylor/Lower Wilson permit revision area. In areas not covered by the Consolidation Coal Company
report (January, 1985) aerial imagery was used to delineate vegetation community type by interpreting
slope, aspect, coloration, and texture variability throughout the landscape and based on the knowledge of
vegetation community types typical of the region surrounding the East, West, and Section 16 mining
areas. Data collected by Greystone in 1999 was used for comparison of productivity in the sagebrush and
mountain shrub reference areas in Figures 2.04.10-8 and 2.04.10-]0. The delineated community types
were digitally transferred to a base topographic map covering the permit revision area. The location and
distribution of vegetation community types in the extended Permit Area are shown on the updated Maps
3, 4A and 4B.
It is important to note that on permit revision area mapping, impacts generally south of the Rio Blanco /
Moffat Co. line will utilize vegetation interpretations from the 1985 Danforth Hills study. Impacts on
areas north of the Rio Blanco / Moffat Co. line and west of Sections 9 and 16 will utilize vegetation
studies and mapping developed by Cedar Creek Associates, Inc. for work on both the Lower Wilson and
Collom projects (2005). The remaining quadrant (Sections 9, 16, and areas to the north and east) will
utilize original Colowyo vegetation mapping.
South Taylor Study Area
• Detailed Vegetation Information - In 1984, detailed vegetation information and data were collected by
performing a baseline vegetation survey within a study azea that encompassed 9,725 acres containing the
South Taylor mining azea. Site specific information included the following:
• Detailed spatial distribution of vegetation communities;
• Plant species composition;
• Vegetation ground cover by species;
• Vegetation above ground biomass (production);

South Taylor/Lower Wilson - Aule 2, Page 60 Revision Date: 4/16/07
Revision No.: PR-02