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Vantage to Pomona Heights Chapter 4 230 kV Transmission Line Project FEIS Environmental Consequences PAGE 4-39 Special Status Species and Priority Ecosystem No federally listed special status plant species or priority ecosystems are known to occur along Route Segment NNR-8 (Table 4.2-5). Based on WNHP data, annual sandwort, dwarf evening-primrose, and gray cryptantha are located along Route Segment NNR-8. In addition, WNHP data indicate that beaked spike-rush, caespitose evening-primrose, bristle-flowered collomia, Columbia milkvetch, Geyer’s milkvetch, Great Basin gilia, naked-stemmed evening-primrose, and white eatonella are known to occur within one mile of Route Segment NNR-8. Approximately 93 percent (30.3 acres) of federal land within this route segment was surveyed for special status plants (Table 3.2-3). Long-term disturbance would occur to 1.6 acres of suitable habitat and 0.7 acre of marginal for special status plants. RDFs described above for Route Segment 1a/NNR-1 would also be implemented during construction and maintenance of Route Segment NNR-8 to minimize impacts to special status plants and include: adhering to measures and terms and conditions developed during the ESA Section 7 consultation period with the USFWS; avoiding or spanning areas supporting special status plants, where practicable; delineating populations of special status plants for avoidance during construction; and developing plant protection plans as part of the POD to identify specific measures for the protection of special status plants. With the implementation of RDFs, impacts to special status plant species and potential suitable habitat are anticipated to be: no identifiable for 0.4 mile, low for 0.5 mile, and moderate for 1.9 miles. Annual Sandwort Refer to Route Segment 3b for information on annual sandwort. WNHP data indicate that annual sandwort intersects Route Segment NNR-8 for approximately 0.4 mile; however, special status species locations include large buffers, so it is uncertain whether this occurrence intersects the ROW corridor. With the implementation of RDFs described above and the assumption that any occurrences found during pre-construction surveys would be spanned and avoided, Project construction, operation, and maintenance activities could impact individuals or habitat (moderate impact), but would not contribute toward the need for federal listing. Dwarf Evening-Primrose Refer to Route Segment NNR-7 for information on dwarf evening-primrose. WNHP data indicate that dwarf evening-primrose intersects Route Segment NNR-8 for approximately 0.1 mile; however, special status species locations include large buffers, so it is uncertain whether this occurrence intersects the ROW corridor. With the implementation of RDFs described above and the assumption that any occurrences found during pre-construction surveys would be spanned and avoided, Project construction, operation, and maintenance activities could impact individuals or habitat (moderate impact), but would not contribute toward the need for federal listing. Gray Cryptantha Refer to Route Segment 3b for information on gray cryptantha. WNHP data indicate that gray cryptantha intersects Route Segment NNR-8 for approximately 0.2 mile; however, special status species locations include large buffers, so it is uncertain whether this occurrence intersects the ROW corridor. With the implementation of RDFs described above and the assumption that any occurrences found during pre- construction surveys would be spanned and avoided, Project construction, operation, and maintenance activities could impact individuals or habitat (moderate impact), but would not contribute toward the need for federal listing. 4.2.4.18 Route Segment MR-1 General Vegetation Long-term disturbance to approximately 42.1 acres of land (Table 4.2-4) would occur with the construction of Route Segment MR-1. The long-term disturbance would occur within 29.3 acres of