New York City Locomotive Repowers: Collaborative Efforts to Improve Air Quality
- CSX Transportation, Inc. (CSXT),
- Waste Management of New York, LLC (WMNY),
- New York & Atlantic Railway (NY&A), and
- New York City Department of Sanitation (DSNY).
The projects consisted of repowering two locomotives owned by CSXT and NY&A. Projects were also influenced by Civics United for Railroad Environmental Solutions (CURES).
Exposure to air pollution associated with emissions from diesel engines (including particulate matter, nitrogen oxides, ozone, and air toxics) can contribute to significant health problems—including premature mortality, increased hospital admissions for heart and lung disease, increased cancer risk, and increased respiratory symptoms – especially for children, the elderly, outdoor workers, and other sensitive populations.1
- The East Coast’s largest port and associated marine traffic;
- Three major airports;
- Freight and commuter rail yards operated by CSXT and NY&A;
- The City’s Industrial Business Zones; and
- Significant highway infrastructure.
CURES advocated for the procurement of low-emission diesel freight locomotives in Queens and Brooklyn in order to address the local impacts from the locomotive operations. They engaged with elected officials and agencies including DSNY to recommend a locomotive repower (engine replacement) for the Fresh Pond Yard freight operations after exploring available technologies. Repowering to a low-emission configuration is an effective means to reduce nitrogen oxide (NOx), which benefits the New York-Northern New Jersey-Long Island Moderate Ozone Nonattainment Area and also reduces particulate matter of 2.5 microns or smaller (PM2.5).
In 2011, as part of its efforts to implement a sustainable waste export system for the City, DSNY signed a Letter of Commitment with WMNY to fund the procurement of a repowered locomotive for Fresh Pond Yard and partnered with NYCEDC and NYC Small Business Services on an EPA grant application for the project. Mayor Michael Bloomberg, the New York City Council, the Congressman and Congresswoman from the 10th and 6th Congressional Districts of New York, and state elected officials from Queens also supported this project.
The projects resulted in successful collaboration between multiple agencies (NYC Small Business Services and DSNY), civic organizations (CURES), businesses (WMNY, CSXT and NY&A ), and colleges and universities. Participation in public planning meetings with the New York Metropolitan Transportation Council (the Metropolitan Planning Organization for the area) resulted in the addition of an environmental goal in the Regional Transportation Plan to pursue funding to replace older diesel locomotives with newer Tier 4 or cleaner locomotives. Most importantly, the success of this project resulted in improved local and regional air quality through emission reductions described below.
CSXT Locomotive Replacement and Repower
In 2016, the CSXT project replaced one six-axle 3,000-hp Tier 0 locomotive with another locomotive, owned by CSXT, that was repowered and equipped with Single-Engine Low-Emission Locomotive (SELEL) technology. The replacement locomotive is certified to meet the EPA Tier 3 Line Haul and Tier 2 Switch emission standards. EPA provided $1 million in DERA funding and project partners provided a cost share of $959,734.
The repowered CSXT Tier 3 locomotive is used primarily for pulling interchange trains between Oak Point Yard, Bronx, NY and Fresh Pond Yard, Queens, NY. Based on historical operating characteristics of the locomotive, CSXT expects annual emission reductions of approximately:
- 5.73 tons nitrogen oxide (NOx), a 33.8 percent reduction annually;
- 0.81 tons particulate matter (PM2.5), an 81.8 percent reduction annually;
- 46 tons carbon dioxide (CO2), a 6.8 percent reduction annually; and
- 4,803 gallons of diesel saved, a 6.8 percent reduction annually.
WMNY Locomotive Repower
The WMNY project repowered an old unregulated four-axle 1,200-hp locomotive used in switcher service with a Knoxville Locomotive Works (KLW) Near Zero Emissions Tier 4 Certified 2,300-hp mother-slug locomotive combination. WMNY partnered with NY&A to obtain the old locomotive and operate the new mother (power unit) and slug (power mate) locomotive. The mother-slug is a combination of two locomotive units operating in tandem, both of which are equipped with traction motors (which furnish the tractive power to the rail, physically moving the train along the tracks).
Only one of the locomotive bodies is equipped with a diesel engine and main generator which together provide the electric power for traction motors in both units. This configuration allows the 2300-hp mother-slug locomotive to move more train cars than just the locomotive alone – achieving more work with the very-low emission engine. EPA provided $1 million in DERA funding and the project partners provided a cost share of $2,897,560.
- 19.4 tons nitrogen oxide (NOx), a 99 percent reduction annually;
- 0.48 tons particulate matter (PM2.5), a 99 percent reduction annually; and
- 26,000 gallons of diesel saved, a 40 percent reduction annually.
At the onset of the CSXT project, the project partners anticipated that a 3,000-hp conventional diesel short-haul locomotive would be repowered with one or more new engines certified at Tier 3 emission standards. However, the Single-Engine Low Emission Locomotive technology was selected by the project partners due to the load demand required to service the Oak Point Yard and deliver the weekly interchange train to the NY&A Fresh Pond Yard in Glendale, Queens.
The WMNY project anticipated repowering a 1,200-hp diesel switch locomotive with one or more new nonroad engines configured to meet the Tier 4 emission standards. The project was delayed for a significant amount of time as the marketplace evolved to offer an appropriate locomotive. The plan was to repower the locomotive as a multi-engine generator set locomotive using multiple nonroad certified engines at the time the application was submitted. However, there were no manufacturers that met the service demands. Additionally, a Tier 4-certified single engine switcher locomotive repower was not commercially available until 2017.
Under the terms of the collaboration, CSXT, NY&A, and WMNY will make the locomotives available for use within the NYC area for a minimum of five years, except as required to leave the area for maintenance or service. The partners are hopeful that the successful outcomes of this project and the experience gained in the implementation of Tier 4 locomotive technology will encourage other operators to pursue switcher upgrades.