2009-04-01_REPORT - C1982057 ‎(6)‎

• Permit No: C1982057
• IBM Index Class Name: REPORT
• Doc Date: 4/1/2009
• Doc Name: 2008 Annual Revegetation Monitoring Report
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Reveg Monitoring Report
• Email Name: DTM
• Media Type: D
• Archive: No

• percent respectively. Introduced annual grasses were the second most encountered lifeforn,
contributing 5.4 percent all-hit vegetation cover. This total was predominantly composed of wheat
(Triticum aestivum) at 4.1 percent. Native perennial cool season grasses contributed 4.2 percent
to total first-hit vegetation cover consisting predominately of mountain brome (Ceratochloa
polyantha). Also observed in the area were houndstongue (no measurable cover, 70%
frequency) and Canada thistle (no measurable cover, 40% frequency).
Total average vegetation cover, for first hits, was 36.2 percent. Total average vegetation cover,
for all hits, was 37.8 percent. Standing dead, litter, bare soil, and rock each had 0.2, 16.6, 45.2,
and 1.8 percent cover, respectively. Average species density was 26.8 species per 100 sq.m.
Production
(Table 5)
Total average production was 1466.8 Ibs per acre. Introduced annual and biennial forbs
contributed the most with an average production of 745.9 Ibs per acre. Introduced annual
grasses contributed a moderate amount with 530.0 Ibs per acre. Native annual and biennial
forbs, native perennial forbs, native cool season grasses, introduced perennial forbs and
introduced perennial cool season grasses were present at less than 100 pounds per acre each.
is
Woody Plant Density
(Table 6)
Total average density of woody plants was 497.8 stems per acre, composed entirely of native
shrubs. Big sagebrush was the most abundant, with 445.2 stems per acre. Antelope bitterbrush
(Purshia tridentata) contributed an average of 48.6 stems per ace and mountain snowberry
contributed an average of 4.0 stems per acre.
2007 RECLAIMED AREA
(Photographs 27-31 in Appendix 5)
Cover
(Table 7)
Introduced annual and biennial forbs were the predominant lifeform observed in the 2007
Reclaimed Area, contributing 14.4 percent all-hit vegetation cover. Of this, the majority (4.4
percent) was devil's shoestrings with twolobe speedwell and pennycress contributing 3.6 and 2.8
percent respectively. Introduced annual grasses were the second most encountered lifeforrn,
contributing 10.6 percent all-hit vegetation cover. This total was predominantly composed of
• wheat at 8.6 percent. Native perennial cool season grasses contributed 7.0 percent all-hit
vegetation cover consisting predominately of mountain brome. Also observed in the area were
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