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• could possibly occur on the site. Payson lupine is a U.S. Fish and Wildlife Service category 2 <br />species. Category 2 species are candidates for listing as endangered or threatened for which <br />additional data are needed before listing can proceed. Thorough searches of the study area, <br />including searches of likely microhabitats, failed to produce any specimens of Luoinus crassus. <br />A number of Colorado designated noxious weeds were found during the 1987 and again in the <br />1999 vegetation surveys. The presence of these noxious and restricted weeds is not unexpected <br />due to the intensive agricultural activities and large amount of disturbed areas within the study <br />area. There were six prohibited noxious weeds encountered during the 1999 studies. They are: <br />Field bindweed (Convolvulus arvensis) <br />Jointed goat grass (Aegilops cylindrica) <br />Canada thistle (Cirsium arvense) <br />Hairy whitetop (Cardaria pubescens) <br />Russian Knapweed (Centaurea repens) <br />Musk Thistle (Cardus nutans) <br />In addition four restricted noxious weeds were also found. They are: <br />Curly dock (Rumex crispus) <br />Blue lettuce (Lactuca pulchella) <br />Buckhorn plantain (Plantago lanceolata) <br />Quackgrass (Agropyron repens) <br />The above noxious weeds were determined from Appendix B to CDMG draft "Guidelines for <br />Compliance with Land Use and Vegetation Requirements for Coal Mining". <br />Irrigated Pasture Tvpe. The irrigated pasture has been cleared of native vegetation and <br />planted to grasses and fortis by the various farms in the study area. All the irrigated pastures are <br />irrigated by means of flooding the fields from ditchs. Irrigated pastures vary from abandoned to <br />highly productive. Some pastures, where irrigation water stands for prolonged periods, is <br />dominated with sedges and rush. Other abandoned pastures are dominated with annual, bi- <br />annual and noxious weeds. After consulting, in the field, with Harry Ranney, Colorado Dept. of <br />• (REVISED 8/15/00) 2.04.10 - 51 <br />