National Grid proposes maintenance project on 115-kV line in New York

Niagara Mohawk Power d/b/a National Grid is proposing to conduct a maintenance project on the Rotterdam–Altamont #17 115-kV Transmission Line, which runs for about 8.4 miles from the Rotterdam substation in Rotterdam, Schenectady County, N.Y., to the Altamont substation in Guilderland, Albany County, N.Y.

The line is double circuited with the Rotterdam–New Scotland #19 115-kV Transmission Line, the company added in its Part 102 Report filed with the New York State Public Service Commission.

While no work is proposed on the Rotterdam–New Scotland #19 Line, that line is undergoing a review of potential substandard clearances and may require work, including the submission of a Part 102 Report, in the future.

The company said that the maintenance project is necessary to provide system reliability to the electric utility end users, as well as to provide for public safety in areas where structure replacement or other methods are used to mitigate substandard clearances. Timely completion of the work is essential to mitigate potential impacts to customer reliability and public safety in the Capital Region, the company said.

As part of the project, National Grid said it proposes the installation of floating deadends on three existing structures and the installation of eight intermediate structures to adhere to certain conditions.

The work proposed as part of the project would take place entirely within the developed right of way (ROW), which National Grid owns, and that would minimize and/or avoid many potential impacts to adjacent and nearby existing and planned land uses.

Project construction would begin in May, and the target date for project completion is April 2017.

The Rotterdam–Altamont line, which primarily traverses agricultural and residential properties, crosses Western Avenue (Route 20) and the New York State Thruway (Interstate 90) in the northern portion of the line.

Noting that it holds a New York State Department of Environmental Conservation (NYSDEC) permit for maintenance, including vegetation management, within the ROW, National Grid said that no NYSDEC-regulated wetlands, their 100-foot adjacent areas, or NYSDEC-classified waters would be impacted as part of the project.

The U.S. Fish and Wildlife Service identified two species as potentially occurring in the vicinity of the project: the federally threatened Northern long-eared bat and the federally endangered Karner blue butterfly.

Noting that no tree cutting or clearing is proposed as part of the project, National Grid added that no impacts to the Northern long-eared bat are anticipated as a result of the project. Also, areas within the immediate vicinity of the ROW are not comprised of the preferred habitat for the Karner blue butterfly or wild lupine, therefore no encounter or impact to that species is anticipated, the company said.

Among other things, the company noted that no buildings, sites or districts listed on the State or National Registers of Historic Places are located within one mile of the project ROW.

National Grid is a subsidiary of National Grid plc (NYSE:NGG).