CH 6 Existing Conditions, Impacts, And
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Chapter 6 Existing Conditions, Impacts, and Mitigation – Route Permit Natural Resources Source: Minnesota DNR 2016i. Figure 6.3.5-3. Scientific and Natural Areas Crossed by the Route Alternatives 6-510 Line 3 Project Final Environmental Impact Statement Chapter 6 Natural Resources Existing Conditions, Impacts, and Mitigation – Route Permit State-Listed Species Endangered and Threatened Species State-listed endangered and threatened animals and plants likely to occur within the ROI for RA-06 are presented in Table 6.3.5-10. Presence or probable absence of state-listed species was determined based on Minnesota NHIS element occurrence records. Table 6.3.5-10. Known Occurrences of State-Protected Animals and Plants within the Region of Interest for Route Alternative RA-06 Species Preferred Habitat Statusa Fish Pugnose shiner Found in glacial lakes and streams with an abundance of submerged T (Notropis anogenus) vegetation. Prefers low-velocity waters with a substrate of sand, mud, or gravel. Shallow waters in warm months and deeper waters in cold months. Vascular Plants Beaked spikerush Coastal salt marshes, and inland in saline, alkaline, or strongly calcareous T (Eleocharis rostellata) habitats (e.g., around hot springs). Fruits during summer to fall in the north. Blunt-lobed grapefern Second-growth forests in shallow depressions and ephemeral pools. A new T (Botrychium oneidense) leaf emerges in the summer (i.e., late June). Goblin fern Rich leaf mold on shaded forest floors in mature maple-basswood and T (Botrychium mormo) maple-basswood-beech forests. Plants emerge from the ground in June, and sporangia open in late September. Hair-like beak rush Calcareous fens, especially along the margins, and spring fens. Germinates T (Rhynchospora capillacea) in the spring, and flowers mid-summer. Sterile sedge Mineral-rich calcareous fens of the prairie region. Mature perigynia are T (Carex sterilis) present from early June to late July. Sources: Minnesota DNR 2016a, 2017a. a E = Endangered, T = Threatened Notes: An occurrence can consist of one or more observations of one or more individuals temporally and spatially. Database search = within 0.5 mile of route centerline. Special Concern Species Occurrences of Minnesota special concern animals and plants, including federally listed species, within the ROI for RA-06 are listed in Tables 6.3.5-11 and 6.3.5-12. Line 3 Project Final Environmental Impact Statement 6-511 Chapter 6 Existing Conditions, Impacts, and Mitigation – Route Permit Natural Resources Table 6.3.5-11. Known Occurrences of Special Concern Animals within the Region of Interest for Route Alternative RA-06 Common Name Scientific Name Mammals Big brown bat Eptesicus fuscus Little brown bat Myotis lucifugus Northern long-eared bat Myotis septentrionalis Birds Nelson’s sparrow Ammodramus nelsoni Northern goshawk Accipiter gentilis Short-eared owl Asio flammeus Trumpeter swan Cygnus buccinator Amphibians Four-toed salamander Hemidactylium scutatum Fish Least darter Etheostoma microperca Mollusks Black sandshell Ligumia recta Creek heelsplitter Lasmigona compressa Source: Minnesota DNR 2016a. Notes: An occurrence can consist of one or more observations of one or more individuals temporally and spatially. Database search = within 0.5 mile of route centerline. 6-512 Line 3 Project Final Environmental Impact Statement Chapter 6 Natural Resources Existing Conditions, Impacts, and Mitigation – Route Permit Table 6.3.5-12. Known Occurrences of Special Concern Plants within the Region of Interest for Route Alternative RA-06 Common Name Scientific Name Forests Least moonwort Botrychium simplex Peatlands Bog rush Juncus stygius var. americanus English sundew Drosera anglica Few-flowered spikerush Eleocharis quinqueflora Small green wood orchid Platanthera clavellata Twig rush Cladium mariscoides White adder’s mouth Malaxis monophyllos var. brachypoda Prairies Blunt sedge Carex obtusata Northern single-spike sedge Carex scirpoidea Small white lady’s-slipper Cypripedium candidum Wetlands/Water Discoid beggarticks Bidens discoidea False mountain willow Salix pseudomonticola McCalla’s willow Salix maccalliana Sources: Minnesota DNR 2016a; 2017a. Notes: An occurrence can consist of one or more observations of one or more individuals temporally and spatially. Database search = within 0.5 mile of route centerline. Minnesota Species of Greatest Conservation Need The WAN shows viable or persistent populations and richness hotspots for the regions in Minnesota (Minnesota DNR 2016f). As shown in Figure 6.3.5-1, RA-06 would cross habitats within the WAN that could be used by multiple SGCNs. Minnesota Biological Survey Sites of Biodiversity Significance As shown in Figure 6.3.5-2, RA-06 would cross areas with MBS Sites. Areas scoring outstanding, high, and moderate that are crossed by this route alternative have an increased potential of containing habitats used by rare animals and plants that potentially would be affected, as discussed below in the impact assessment. Minnesota Scientific and Natural Areas As depicted in Figure 6.3.5-3, RA-06 would come within 0.5 mile of the Lost 40 and Wawina Peatland SNAs (Minnesota DNR 2016i). The Lost 40 SNA has virgin old-growth white pine-red pine forest that is considered to be the most significant stand outside of the Boundary Waters and Itasca State Park Line 3 Project Final Environmental Impact Statement 6-513 Chapter 6 Existing Conditions, Impacts, and Mitigation – Route Permit Natural Resources (Minnesota DNR 2016f). The Wawina Peatland SNA is a large-patterned peatland complex with ovoid island patterns, a featureless water track, raised bog, and crested raised bog (Minnesota DNR 2016g). Route Alternative RA-07 Federally Listed Species The Canada lynx, gray wolf, northern long-eared bat, rufa red knot, and rusty patched bumble bee have the potential to occur within the ROI for RA-07 (Table 6.3.5-13). Table 6.3.5-13. Potential Occurrences of Federally Protected Species within the Region of Interest for Route Alternative RA-07 Species Preferred Habitat Statusa Mammals Canada lynx Boreal regions dominated by coniferous or mixed forests. Dens in mature T (Lynx canadensis) or old-growth forests with high density of logs. Breeds late winter to early spring. Gray wolf Suitable habitats in the ROI include hardwood forest, mixed forest, and T (Canis lupus) grasslands. Digs dens in suitable soils or uses dens initiated by other Great Lakes Distinct animals. Breeds February to late June. Population Segment Northern long-eared bat Suitable habitat occurs in the ROI. In summer, bats roost underneath bark, T (Myotis septentrionalis) in cavities, or in crevices of both live trees and snags. Mates in fall and gives birth in summer (May to July). Caves and mines are winter hibernacula (October to April). Birds Rufa red knot Shorelines, tidal zones, sandy beaches. Nests in Arctic tundra, usually near T (Calidris canutus rufa) water. Breeds late May to early June. Insects Rusty patched bumble bee Grasslands and tallgrass prairies with areas that provide flowers, nesting E (Bombus affinis) sites such as abandoned rodent cavities or grass clumps, and overwintering sites in undisturbed soil for hibernating queens. Eggs are laid in spring. Source: USFWS 2016. a E = Endangered, T = Threatened Note: IPaC search = within 1 mile of route centerline. ROI = region of interest State-Listed Species Endangered and Threatened Species No state-protected animals are reported to occur along the RA-07 route. State-listed endangered and threatened plants likely to occur along RA-07 are presented in Table 6.3.5-14. Presence or absence of state-listed species was determined based on Minnesota NHIS element occurrence records. 6-514 Line 3 Project Final Environmental Impact Statement Chapter 6 Natural Resources Existing Conditions, Impacts, and Mitigation – Route Permit Table 6.3.5-14. Known Occurrences of State-Protected Plants within the Region of Interest for Route Alternative RA-07 Species Preferred Habitat Statusa Beaked spikerush Coastal salt marshes, and inland in saline, alkaline, or strongly calcareous T (Eleocharis rostellata) habitats (e.g., around hot springs). Fruits during summer to fall in the north. Goblin fern Rich leaf mold on shaded forest floors in mature maple-basswood and T (Botrychium mormo) maple-basswood-beech forests. Plants emerge from the ground in June, and sporangia open in late September. Hair-like beak rush Calcareous fens, especially along the margins, and spring fens. Germinates T (Rhynchospora capillacea) in the spring, and flowers mid-summer. Hidden-fruited bladderwort Wetlands, including bogs, fens, lakes, ponds, and river or lake shores. T (Utricularia geminiscapa) Blooms July through August. Narrow triangle moonwort In woods and on hummocks in swamps, and in cool to warm, mostly rich, T (Botrychium lanceolatum subacid soils. May be found in open fields at the northern end of its ssp. angustisegmentum) range. Site elevations range from near sea level to 3,600 feet. Leaves emerge in spring and spores mature through summer. Ram’s head orchid Cool, dense white cedar, balsam, and spruce swamps; nearly pure sand T (Cypripedium arietinum) over limestone beach cobble or bedrock, mulched with conifer needles; and in mesic soil of sandy loam or clay under the partial shade of conifer or mixed forest. Prefers cool, sub-acid or neutral soil, loam, or sand in upland sites and nutrient-poor peat in lowland sites. Flowers from late May through mid-June. Sterile sedge Mineral-rich calcareous fens of the prairie region. Mature perigynia are T (Carex sterilis) present from early June to late July. Sources: Minnesota DNR 2016a, 2017a. a E = Endangered, T = Threatened Notes: An occurrence can consist of one or more observations of one or more individuals temporally and spatially. Database search = within 0.5 mile of route centerline; no occurrence of state-protected animals. Special Concern Species Occurrences of Minnesota special concern animals and plants, including federally listed species, within the ROI for RA-07 are listed in Tables 6.3.5-15 and 6.3.5-16. Line 3 Project Final Environmental Impact Statement 6-515 Chapter 6 Existing Conditions, Impacts, and Mitigation – Route Permit Natural Resources Table 6.3.5-15.