PSEG Long Island seeks approval for 138-kV line in Nassau County, N.Y.

The new line must be installed by 2020 for PSEG Long Island to continue to maintain a safe, robust, and reliable system, and remain in compliance with mandatory federal regulations

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PSEG Long Island filed with the New York State Public Service Commission an application for a certificate of environmental compatibility and public need for the proposed 138-kV, underground Western Nassau Transmission Project in Nassau County, N.Y.

As noted in the application, the project would be built primarily within municipal public roadway rights of way (ROWs) for a total distance of about seven miles between the East Garden City substation, located in Uniondale, and the Valley Stream substation, located in Lynbrook – both in the Town of Hempstead.

The project requires alterations at the existing Valley Stream and East Garden City substations to accommodate the facility, the company added in its application. There would be an underground-to-overhead terminal built at each substation to transition the underground cable to an overhead connection, which would be tied to newly installed 138-kV circuit breakers, switches, and 138-kV buswork, the company said.

The facility would traverse the villages of Garden City, Malverne, and Lynbrook, the company said, adding that it has municipal franchise rights that allow it to install permanent electric facilities in roadways along the general alignment of the proposed route of the facility, and, to the extent practical, efforts would be made to build the project wholly within those roadway limits.

Project construction would involve two crossings of the Long Island Rail Road (LIRR): there would be a crossing of the LIRR West Hempstead Branch on Franklin Avenue, between Broadway and Rider Avenue, in the Village of Malverne; and there would be a crossing at the underpass of the Hempstead Branch of the LIRR on Cherry Valley Avenue, between 6th Street and Stewart Avenue, in the Village of Garden City.

The company added that the project would also involve the perpendicular crossing of two state highways, Hempstead Turnpike (Route 24) and the Southern State Parkway. Also, the project crosses one aquatic resource, known as Pines Stream, which flows under Hempstead Avenue within a concrete-lined culvert with a riprap stream bed.

The project would reinforce LIPA’s electric transmission system in the southwest Nassau area and ensure continued reliable service to LIPA’s customers on Long Island, the company added. In addition, the project would address a NERC transmission planning reliability standard by upgrading the transmission infrastructure to maintain reliability, the company said. Furthermore, the project would provide additional operational flexibility, the company said.

The company noted that environmental studies and environmental impact assessments that were prepared for the project concluded that the project would result in limited and temporary adverse environmental effects, which would occur primarily during the construction phase.

The company noted that since the project would be located primarily underground within public road ROW and within existing substations, the company has avoided or minimized the potential for the project to result in adverse impacts in these areas: land uses, visual resources, cultural resources, wetlands and aquatic resources, topography and soils, as well as noise.

Nearby residences may experience short-term disturbance and traffic inconvenience associated with project construction activities. The company added that to minimize potential construction effects, it would provide timely information to adjacent property owners and tenants regarding the planned construction activities and schedules, and would coordinate with the New York State Department of Transportation, county officials, and local police departments to develop and implement traffic control measures.

According to the company’s website, the new line must be installed by 2020 for PSEG Long Island to continue to maintain a safe, robust, and reliable system, and remain in compliance with mandatory federal regulations.

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