Inland Power & Light 230-kilovolt Substation Project CX(s) Applied: B4.6 Date: 11/17/2011 Location(s): Washington Offices(s): Bonneville Power Administration
Office of NEPA Policy and Compliance
November 17, 2011
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Inland Power & Light 230-kilovolt Substation Project
CX(s) Applied: B4.6
Date: 11/17/2011
Location(s): Washington
Offices(s): Bonneville Power Administration
To provide a tap point for IP&L, Bonneville Power Administration (BPA) would do the following: 1. Install two new 35-foot tall disconnect switch structures under the BPA Bell-Boundary line located about 50 feet south of tower 5/2 and 50 feet north of tower 5/5. Construction of each lattice-steel, disconnect switch structure would require four holes 6-8 feet deep in a rectangular pattern 34 feet wide (to match the lines above) by 10 feet, and would be located on BPA Right-of-Way (ROW) underneath the existing transmission line. 2. BPA may need to construct a new wood pole dead-end transmission line structure between towers 5/4 and 5/5 of the BPA Bell-Boundary transmission line. If needed, this structure would require 2-3 wooden poles installed approximately 10 feet deep in the ground. This structure would be located in the middle of BPA ROW, perpendicular to IP&L’s new substation location between towers 5/4 and 5/5, and would support the end of the tap line to IP&L’s substation. 3. Install new metering equipment within IP&L’s new Day Mt. Spokane Substation control house.
CX(s) Applied: B4.6
Date: 11/17/2011
Location(s): Washington
Offices(s): Bonneville Power Administration
To provide a tap point for IP&L, Bonneville Power Administration (BPA) would do the following: 1. Install two new 35-foot tall disconnect switch structures under the BPA Bell-Boundary line located about 50 feet south of tower 5/2 and 50 feet north of tower 5/5. Construction of each lattice-steel, disconnect switch structure would require four holes 6-8 feet deep in a rectangular pattern 34 feet wide (to match the lines above) by 10 feet, and would be located on BPA Right-of-Way (ROW) underneath the existing transmission line. 2. BPA may need to construct a new wood pole dead-end transmission line structure between towers 5/4 and 5/5 of the BPA Bell-Boundary transmission line. If needed, this structure would require 2-3 wooden poles installed approximately 10 feet deep in the ground. This structure would be located in the middle of BPA ROW, perpendicular to IP&L’s new substation location between towers 5/4 and 5/5, and would support the end of the tap line to IP&L’s substation. 3. Install new metering equipment within IP&L’s new Day Mt. Spokane Substation control house.