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SPIRINTHES DfLUV/ALTS SURVEY REPORT <br />Tulip gentian (Eustoma grandiJlorum) occurs in the slightly alkaline wet meadows <br />around the southern end (Photo 4) and in narrow patches azound other portions of the <br />lake. This species is considered raze in Colorado (Spackrnan, et al., 1997), although it is <br />not federally or state listed as threatened or endangered. <br />The lazge lake east of Boulder Creek, Wetland 4, was excavated previously for gravel <br />mining. This water body is a water of the U.S. with mostly a sandy, rocky shoreline <br />(Photo 5). Patches of wetlands occur along the edges. Dominant wetland species include <br />three squaze bulrush (Schoenoplectus pungens) and water speedwell (Veronica <br />americana) in areas that aze inundated. In transition azeas, cocklebur, saltgrass, Baltic <br />rush, and rabbitfoot grass (Polypogon monspeliensis) occur. A lazge upland azea <br />dominated by alkali sacaton (Sporobolus airoides) occurs to the south of the lake. <br />Upland areas aze characterized by slender wheatgrass (Elymus trachycaulus) and sweet <br />clover (Melilotus officinale). <br />Other wetlands occur within the azea including drainages dominated by reed canary- <br />grass (Wetland 7), sandbar willow dominated old oxbows (wetlands 8 and 9), and <br />alkaline depression wetlands (Wetland 1, 3, and 10). <br />Conclusions <br />All habitats within the project area that potentially could support Spiranthes diluvialis <br />were surveyed per the U.S. Fish and Wildlife Service November 23, 1992 interim survey <br />requirements for Spiranthes diluvialis. Spiranthes diluvialis was not observed within the <br />project area and there is no reason to believe that it occurs within the project area. <br />The species listed in Table 1 were found on the site, although this list is not meant to <br />be all-inclusive. Taxonomy and nomenclature is based on Colorado Flora - Eastern <br />Slope (Weber 1990). <br />ERO <br />Resources <br />Corporation <br />