Environmental Impact Statement - radioactive monticello

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Appendix E Table 1. Monticello Transmission Unae" Rights-of-Way No. of .Approximate Corridor Corridor Substation Lines,.. kV Distance (ml) Corridor Width (ft) Area (ac) Sherbume 1 345, 43.1 Montcello-Coon .Varies from 749.7 Cotunty Creek . 125 to240 Elm Creek 1 345 37.1 Monticello- Vales from 957 Parkers Lake 165 to 240 Source: Xcel 2005 Xcel Energy is responsible for maintenance on transmission line ROWs for Monticello's owner (NSP) and operator (NMC). Xcel Energy. Implements specific programs for ensuring continued operation of its transmission lines, continued compatibility of land uses on the transmission corridors, and environmentally sound maintenance of the corridors (NMC 2005). The Xcel Energy program for conductor and tower maintenance Includes monthly fixed-wing aerial patrols for the 345-kV lines and annual helicopter patrols'on all lines in the system (NMC 2005). Xcel Energy's vegetaion management in ROWs is focused on reducing risk to transmission lines by keeping corridors free of tall-growing vegetation. Low-growing trees, shrubs, and grasses are encouraged by selectively removing tall-growing trees and brush. Qualified line-clearance tree trimmers manually cut andi prune using approved mechanical equipment. such as hydro-axes, and selective application of approved herbicides (NMC 2005). Approved herbicides are applied In strict compliance with all Federal, state, and local laws and regulations. Similarly, talg frees typically located Just off the right-of-way that have a high probability of failure and sufficient height toymake contact with the conductors and/or structures are pruned or cut as appropriate. Vegetation control Pycles vary based on line voltage and vegetation conditions, but typically occur on interVaif from 2 to 8 years. 4.0 Assessment of Federally Listed Species and Critical Habitat Three Federally listed species are evaluated In this biological assessment because of their proximity. to Monticello or its associated transmission lines (Table 2).' No Federally designated candidate species, nor ciltical habitat for any threatened or endangered species, exist at the Monticello site or along the associated transmission corridors (NMC 2005; FWS 2005a). 8 I NUREG-1437, Supplement 26 E-24 August 2006
Appendix E Table 2. Terrestrial and Aquatic Species Listed as Endangered or Threatened by the U.S. Fish and Wildlife Service and that Occur or Potentially Occur Within the Monticello Site or the Associated Transmission Line Rights-of-Way Scientific Name Type Common Name Federal Status Counties Lampsllis higginsli Invertebrate Higgins' eye Endangered Hennepin pealymussel Haliaeetus Bird bald eagle Threatened Anoka, Hennepin, leucocephalus Sherburne, Wright Canils lupus Mammal gray wolf Threatened Sherbume Source: FWS 2005a Higgins'Eye Pearlymussel (Lampsilis higginsit) The Federally listed endangered Higgins' eye peadymussel is only found in the Mississippi River, St. Croix River in Wisconsin. the Wisconsin River. and the Rock River In Illinois. It may be present within Hennepin County over 45 river miles (RM) downstream of the Monticello site (FWS 2005a). It has not been reported from Sherburne or Wright counties where Monticello Is located. The Higgins' eye pearlymussel spawns in late summer, but larvae are retained In the marsupia until they are released during the following spring or summer (FWS 2003). The Higgins' eye pearlymussel most frequently occurs In medium to large rivers with current velocities of about 0.5 to 1.5 ft/sec and in depths of 3 to 20 ft. with firm, coarse sand or mud-gravel substrates (FWS 2000, 2001a). No critical habitat has been designated for the Higgins' eye pearlymussel. However, ten Essential Habitat Areas (EHAs) for the Higgins' eye peadymussel occur within the Upper Mississippi River watershed. EHAs are locations known to contain reproducing populations of the Higgins' eye pearlymussel in association with a healthy and diverse unionid community (e.g., mussel beds) (FWS 1998). No EHAs occur within the Mississippi River drainage dose to Monticello. The most upstream EHA Is at Whiskey Rock. Iowa, at Mississippi RM 656, which is downstream from Lock and Dam 8. Monticello Is located some 240 RM upstream. The closest EHA for the Higgins' eye pearlymussel occur In the St Croix River (Hornbach 2004). which flows Into the Mississippi River at RM 811 about 89 mi downstream from Monticello. Suitable fish hosts for the glochldia (larvae) Include freshwater drum (Aplodlnotus grunniens), largemouth bass (Micropterus salmoides), black crappie, yellow perch, sauger (Sander canadensls), and.walleye; while marginal fish hosts Include northern pike, bluegill (Lepornis macmchirus). and green sunfish (L. cyanellus) (FWS 2003). In 2000-2001, an empty Higgins' eye peartymussel shell was found In Upper Pool 3 of the Mississippi River (the area below Lock and Dam 3 in the area where the St. Croix River enters the Mississippi River at RM 811 (Kelner and Davis 2002). In 2000. 200 specimens of Higgins' 9' I August 2006 E-25 NUREG-1437, Supplement 26
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NUREG-1437 Supplement 26 Generic En
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Generic Environmental Impact Statem
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Abstract The U.S. Nuclear Regulator
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Contents Abstract........... ......
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Contents 4.8.7 Conclusions Regardin
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Figures Figure 2-1. Figure 2-2. Fig
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Contents Table 5-1. Category 1 Issu
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Executive Summary The Commission ha
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Executive Summary NMC and the staff
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0 degree pCi microcurie(s) pCi/mL m
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Abbreviations/Acronyms IPE IPEEE J
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Abbreviations/Acronyms rem REMP RHR
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Introduction and (4) present the st
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Introduction (1) The environmental
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Introduction I assessment of the re
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Introduction This definition of pur
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Description of Site and Environment
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Summary and Conclusions U.S. Nuclea
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Appendix A: Comments Received on th
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Monticello Nuclear Generating Plant
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the coal chain What about all the s
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gasification generation balanced ag
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information in the Final SEIS as pa
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aging management aspects of the lic
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Page 413 and 414: NRC FORM 335 U.S. NUCLEAR REGULATOR
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