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Vantage to Pomona Heights Chapter 4
<br />230 kV Transmission Line Project FEIS Environmental Consequences
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<br /> PAGE 4-37
<br />With the implementation of RDFs, impacts to special status plant species and potential suitable habitat are
<br />anticipated to be moderate for 8.3 miles.
<br />Beaked Cryptantha
<br />Beaked cryptantha is a BLM Sensitive species and a Washington Threatened species. Beaked cryptantha
<br />is known from Kittitas County, Washington south through Oregon to central California. In Washington, it
<br />is currently known in Kittitas, Grant, Klickitat, Garfield, and Asotin counties in the Columbia Basin
<br />physiographic province. Six populations occupying approximately 817 acres are known to occur within
<br />the region. Primary threats to beaked cryptantha include grazing, erosion, and invasion of habitat by
<br />exotic species. WNHP data indicate that beaked cryptantha intersects Route Segment NNR-7 for
<br />approximately 0.7 mile; however, special status species locations include large buffers, so it is uncertain
<br />whether this occurrence intersects the ROW corridor. As this entire route segment was not surveyed due
<br />to route adjustments made following the special status plant survey, this species could have the potential
<br />to occur within the ROW. With the implementation of RDFs described above and the assumption that any
<br />occurrences found during pre-construction surveys would be spanned and avoided, Project construction,
<br />operation, and maintenance activities could impact individuals or habitat (moderate impact), but would
<br />not contribute toward the need for federal listing.
<br />Bristle-flowered Collomia
<br />Refer to Route Segment 3b for more information on bristle-flowered collomia. WNHP data indicate that
<br />bristle-flowered collomia intersects Route Segment NNR-7 for approximately 0.2 mile; however, special
<br />status species locations include large buffers, so it is uncertain whether this occurrence intersects the
<br />ROW corridor. As this entire route segment was not surveyed due to route adjustments made following
<br />the special status plant survey, this species could have the potential to occur within the ROW. With the
<br />implementation of RDFs described above and the assumption that any occurrences found during pre-
<br />construction surveys would be spanned and avoided, Project construction, operation, and maintenance
<br />activities could impact individuals or habitat (moderate impact), but would not contribute toward the need
<br />for federal listing.
<br />Caespitose Evening-Primrose
<br />Refer to Route Segment 3b for information on caespitose evening-primrose. WNHP data indicate that
<br />caespitose evening-primrose intersects Route Segment NNR-7 for approximately 1.6 miles; however,
<br />special status species locations include large buffers, so it is uncertain whether this occurrence intersects
<br />the ROW corridor. As this entire route segment was not surveyed due to route adjustments made
<br />following the special status plant survey, this species could have the potential to occur within the ROW.
<br />With the implementation of RDFs described above and the assumption that any occurrences found during
<br />pre-construction surveys would be spanned and avoided, Project construction, operation, and maintenance
<br />activities could impact individuals or habitat (moderate impact), but would not contribute toward the need
<br />for federal listing.
<br />Dwarf Evening-primrose
<br />Dwarf evening-primrose is a BLM Sensitive and Washington Sensitive species. It is a regional endemic
<br />known from eastern Washington, eastern Oregon, and Idaho. In Washington, it is known to occur in
<br />Benton, Douglas, Franklin, Grant, and Kittitas counties. Within the region, nineteen populations are
<br />known to occur occupying 6,564 acres. Primary threats to dwarf evening-primrose include resource
<br />extraction, road construction, herbicide drift, and invasion of non-native species. WNHP data indicate that
<br />dwarf evening-primrose intersects Route Segment NNR-7 for approximately 0.4 mile; however, special
<br />status species locations include large buffers, so it is uncertain whether this occurrence intersects the
<br />ROW corridor. As the entire ROW was not surveyed, dwarf evening-primrose could be present. With the
<br />implementation of RDFs described above and the assumption that any occurrences found during pre-
<br />construction surveys would be spanned and avoided, Project construction, operation, and maintenance
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