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2020-03-24_PERMIT FILE - C1981019A (2)
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2020-03-24_PERMIT FILE - C1981019A (2)
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Last modified
5/11/2020 5:24:59 PM
Creation date
5/9/2020 2:50:43 PM
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Template:
DRMS Permit Index
Permit No
C1981019A
IBM Index Class Name
Permit File
Doc Date
3/24/2020
Type & Sequence
TR135
Section_Exhibit Name
Rule 2 Permits -ST
Media Type
D
Archive
Yes
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RULE 2 PERMITS <br />vegetation data in sufficient detail to facilitate development of a revegetation plan and performance <br />standards for the disturbed area associated with the South Taylor and/or Lower Wilson mining areas. <br />General Vesetation Information — South Taylor Pit Area <br />General vegetation mapping information was developed based on the following information: <br />• Colowyo Coal Company Permit C-81-019 - Application for Permit Renewal/Permit Revision - <br />Mining —Section 2.04. 10 (Colowyo Coal Co., 199 1) <br />• Vegetation Inventory of the Danforth Hills Project, Rio Blanco County Colorado (by Harper and <br />Associates, Inc. for Consolidation Coal Company, January, 1985) (see Exhibit 10, Item 5); <br />• Production Evaluation for the Sagebrush and Mountain Shrub Reference Areas — Greystone <br />Environmental Consultants (1999); <br />• Color aerial photographs (Scale: 1" = 2,000') taken in September 1997; <br />• Digital 1.5 meter -resolution true color remote sensing imagery exposed in the summer of 2002; <br />and <br />• Digital 0.5 -meter resolution color -infrared remote sensing imagery exposed in September of <br />2005. <br />The delineated vegetation community types described in this section and indicated on Map 3 of the <br />existing permit document were used as the basis of the general vegetation inventory. The Consolidation <br />Coal Company report (January 1985) (Exhibit 10, Item 5) and color aerial photos were used in <br />combination as the basis for delineating the various vegetation community types within the South <br />Taylor/Lower Wilson permit revision area. In areas not covered by the Consolidation Coal Company <br />report (January, 1985) aerial imagery was used to delineate vegetation community type by interpreting <br />slope, aspect, coloration, and texture variability throughout the landscape and based on the knowledge of <br />vegetation community types typical of the region surrounding the East, West, and Section 16 mining <br />areas. Data collected by Greystone in 1999 was used for comparison of productivity in the sagebrush and <br />mountain shrub reference areas in Figures 2.04.10-8 and 2.04.10-10. The delineated community types <br />were digitally transferred to a base topographic map covering the permit revision area. The location and <br />distribution of vegetation community types in the extended Permit Area are shown on the updated Maps <br />3, 4A and 4B. <br />It is important to note that on permit revision area mapping, impacts generally south of the Rio Blanco / <br />Moffat Co. line will utilize vegetation interpretations from the 1985 Danforth Hills study. Impacts on <br />areas north of the Rio Blanco / Moffat Co. line and west of Sections 9 and 16 will utilize vegetation <br />studies and mapping developed by Cedar Creek Associates, Inc. for work on both the Lower Wilson and <br />Collom projects (2005). The remaining quadrant (Sections 9, 16, and areas to the north and east) will <br />utilize original Colowyo vegetation mapping. <br />South Taylor Study Area <br />Detailed Vegetation Information — In 1984, detailed vegetation information and data were collected by <br />performing a baseline vegetation survey within a study area that encompassed 9,725 acres containing the <br />South Taylor mining area. Site specific information included the following: <br />• Detailed spatial distribution of vegetation communities; <br />• Plant species composition; <br />• Vegetation ground cover by species; <br />• Vegetation above ground biomass (production); <br />South Taylor/Lower Wilson— Rule 2, Page 38 Revision Date: 7/23/18 <br />Revision No.: TR -123 <br />
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