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REP36304
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Entry Properties
Last modified
8/25/2016 12:14:08 AM
Creation date
11/27/2007 7:24:39 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981028
IBM Index Class Name
Report
Doc Date
12/11/2001
Doc Name
1999 AHR & ARR VEGETATION
Annual Report Year
1999
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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Seasonality of the reference azea was nearly evenly split between warm season (four <br />species) and cool season species (five species), with one evergreen and one deciduous <br />species. Graminoids were evenly split between warm (three species) and cool (three <br />species) season species. Two forb species were cool season and one was warm season. <br />The succulent was evergreen and the shrub species was deciduous. <br />1995 RECLAMATION AREAS <br />The 1995 reclamation areas encompass approximately 49 acres of reclamation in six <br />distinct areas within the Keenesburg Mine permit area. The areas are found throughout <br />the disturbance area of the mine and include; a road corridor from the northwest comer of <br />the long term spoil storage azea to the northwest boundary of the permit azea, an area <br />(with four distinct parcels) between the sediment pond and the 1985 reclamation azea <br />which was used for spoil storage, the former tipple area north of the shop building, the <br />east half of A pit, and an area immediately east of the western pazcel reclaimed in 1987. <br />In 1999, sampling was undertaken in eight distinct areas reclaimed in 1995. Vegetation <br />cover transects and herbaceous production quadrats were distributed within the areas <br />based on size. The 1995 reclamation areas are nearly flat with a gentle slope (<1 °) to the <br />north and east. Reclamation and coincident revegetation within this area took place in <br />1995. Replaced soils were sandy in texture. Specific sampling information for the 1995 <br />reclamation areas is contained in Tables 3 and 7. <br />Vegetation Cover <br />Total mean vegetation cover of the 1995 reclamation areas was 41.50 percent. <br />Graminoids provided 33.13 percent mean cover (82.02% relative cover) and forbs <br />accounted for 8.38 percent mean cover (17.98% relative cover). No succulents or woody <br />shrubs were encountered in the 1995 reclamation areas during the cover sampling. Total <br />cover values and the composition of the species contributing to cover was variable within <br />the 1995 reclamation azeas. <br />Of the eight areas sampled, the highest level of total vegetation cover was found in the <br />southwest area and the east of '87 west area with average total cover of 63 and 58 <br />percent, respectively. The high total cover in these areas was comprised largely of annual <br />grasses and annual forbs, indicative of their early seral developmental stage. The same can <br />be said of the southeast area. Remaining 1995 reclamation areas (NW road corridor, W <br />of sediment pond, tipple, south of sediment pond, and east of A pit) revealed total cover <br />values ranging from 30 to 40 percent. While the annual grass Bromus lectorum <br />(cheatgrass) was present in these areas as well, significant development of seeded <br />perennial graminoids and perennial forbs was observed. <br />Overall within the 1995 reclamation areas, Bromus lectorum accounted for the highest <br />overall cover with 17.00 percent mean cover and 41.01 percent relative cover. This <br />aggressive introduced cool season annual grass was found in all 1995 reclamation areas, <br />and its significant presence this year may be explained by [he abundant moisture in April <br />-7- <br />
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