East Grangeville Substation : Environmental Assessment.

Technical Report · Tue Mar 01 00:00:00 EST 1983

OSTI ID:5088629

United States. Bonneville Power Administration.

BPA proposes to build a 6/8 MVA, 115/13.8-kV substation about 0.7 mile (1.2 km) east of Grangeville, Idaho. BPA's substation yard would comprise an area of 70 by 72 feet (21 by 22 m) containing a 115/13.8-kV transformer. Energization for the substation is scheduled for September 1983. In connected actions the Co-op would build a 13.8-kV switching station and a 13.8/34.5-kV step-up station. The Co-op would require an area of 100 by 55 feet (31 by 17 m) in addition to the BPA yard. The total area needed for the combined BPA/Co-op substation would be approximately 170 by 127 feet (52 by 40 m) or one-half of an acre (0.20 ha). The Co-op would also build two 13.8-kV feeders and one 34.5-kV feeder underground south of the substation to overhead distribution lines along State Highway 13 with space for one future feeder. Another 13.8-kV feeder would exit the substation underground and loop around to the north to reconnect to the existing 13.8-kV overhead line. TWWP would build a tapline from their Grangeville-Kamiah-Nez Perce (Grangeville-Nez Perce No. 2) 115-kV transmission line to the substation. This line would be approximately 0.75 mile (1.2 km) long and would consist of single wood pole structures built on the route of an existing Co-op distribution line. The new and existing lines would use the same poles. A temporary access road would be built for 0.25 mile (0.4 km). The remaining 0.5 mile (0.8 km) section would be adjacent to a county road and would not require an access road. Two sites were identified as meeting the technical requirements. Site 2 is recommended.

• Research Organization: USDOE Bonneville Power Administration, Portland, OR. Office of Engineering and Construction
• OSTI ID: 5088629
• Report Number(s): DOE/EA-0200; ON: DE88010386
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING
POLICY AND ECONOMY
20 FOSSIL-FUELED POWER PLANTS
ELECTRIC POWER
POWER TRANSMISSION
POWER DISTRIBUTION SYSTEMS
ENVIRONMENTAL IMPACTS
AGRICULTURE
BONNEVILLE POWER ADMINISTRATION
CONSTRUCTION
IDAHO
LAND USE
OPERATION
POWER SUBSTATIONS
POWER TRANSMISSION LINES
FEDERAL REGION X
INDUSTRY
NATIONAL ORGANIZATIONS
NORTH AMERICA
POWER
US DOE
US ORGANIZATIONS
USA
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