Carter Mountain--Thermopolis 230-kV Transmission Line project, Hot Springs County, Wyoming. Environmental assessment

Technical Report · Wed Jan 01 04:00:00 EST 1992

OSTI ID:10156528

The Western Area Power Administration (Western) is one of five power marketing administrators within the Department of Energy (DOE) responsible for the transmission and marketing of hydroelectric power from federal dams in the United States. Western is responsible for the federal electric power marketing and transmission functions in 15 central and western states. Western operates and maintains an existing electric transmission system between the southern Montana area and northern Colorado. The system`s northern termination is at Yellowtail, Montana, and the southern termination is at Ault in northern Colorado. A considerable portion (about 75 percent) of Western`s Yellowtail-Ault transmission system is over 40 years old, and the wood pole structures have deteriorated to the point where the system is in need of extensive rehabilitation or rebuilding. The remaining portion is about 25 years old and will reach the end of its useful life expectancy within 10 to 15 years. Although about 75 percent of the transmission lines have exceeded their expected service life, they remain integral and essential elements in the overall Wyoming-Colorado area`s present and future bulk power system. Western is studying a program to replace or rebuild, at higher voltages, segments of the system over an extended period of time. This environmental assessment (EA) was prepared in accordance with the National Environmental Policy Act (NEPA) to assess the impacts of rebuilding a specific portion of Western`s Yellowtail to Ault system in the Carter Mountain-Thermopolis area. In addition, western has conducted a generalized study of the environmental impacts of using existing corridors in future replacement or rebuilding segments of the transmission system from Yellowtail in partnership with other area utilities to Ault. As the requirements are specifically identified for these additional line segments, Western will conduct in-depth environmental studies.

• Research Organization: USDOE Western Area Power Administration, Loveland, CO (United States). Loveland Area Office
• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 10156528
• Report Number(s): DOE/EA--0453; ON: DE92015766; NC: NONE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240300
240500
ANIMALS
CLIMATES
CONSTRUCTION
ELECTROMAGNETIC FIELDS
ENDANGERED SPECIES
ENVIRONMENTAL ASPECTS
ENVIRONMENTAL IMPACTS
EROSION
EVALUATION
LAND USE
MITIGATION
OPERATION
PLANTS
POWER TRANSMISSION LINES
POWER TRANSMISSION LINES AND CABLES
POWER TRANSMISSION TOWERS
PUBLIC OPINION
SOCIO-ECONOMIC FACTORS
SOILS
WATER RESOURCES
WESTERN AREA POWER ADMINISTRATION
WYOMING