PERMFILE104188

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 3/25/2003
• Section_Exhibit Name: NH2 Section 2.04.10 Vegetation Information Study Area 1987 & 1999
• Media Type: D
• Archive: Yes

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could possibly occur on the site. Payson lupine is a U.S. Fish and Wildlife Service category 2
species. Category 2 species are candidates for listing as endangered or threatened for which
additional data are needed before listing can proceed. Thorough searches of the study area,
including searches of likely microhabitats, failed to produce any specimens of Lupinus crassus.
A number of Colorado designated noxious weeds were found during the 1987 and again in the
1999 vegetation surveys. The presence of these noxious and restricted weeds is not
unexpected due to the intensive agricultural activities and large amount of disturbed areas
within the study area. There were six prohibited noxious weeds encountered during the 1999
studies. They are:
Field bindweed
Jointed goat grass
Canada thistle
Hairy whitetop
Russian Knapweed
Musk Thistle
(Convolvulus arvensis)
(Aegilops cylindrica)
(Cirsium arvense)
(Cardaria pubescens)
(Centaurea repens)
(Cardus nutans)
In addition four restricted noxious weeds were also found. They are:
Curly dock
Blue lettuce
Buckhorn plantain
Quackgrass
(Rumex crispus)
(Lactuca pulchella)
(Plantago Ianceolata)
(Agropyron repens)
The above noxious weeds were determined from Appendix B to CDMG draft "Guidelines for
Compliance with Land Use and Vegetation Requirements for Coal Mining".
Irrigated Pasture Type. The irrigated pasture has been cleared of native vegetation and
planted to grasses and fortis by the various farms in the study area. All the irrigated pastures
are irrigated by means of flooding the fields from ditchs. Irrigated pastures vary from
abandoned to highly productive. Some pastures, where irrigation water stands for prolonged
periods, is dominated with sedges and rush. Other abandoned pastures are dominated with
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