The dirtiest system within the area? Based on the research, it’s the century-old Port Authority Trans-Hudson strains connecting New York Metropolis to northern New Jersey. Researchers discovered that one station specifically — the Christopher Avenue PATH station in Manhattan — had particulate air air pollution “larger than any ranges studies for any subway system throughout the globe.”
The median quantity of particulate air pollution present in PATH stations surveyed within the research is greater than double the median quantity discovered at underground stations in Boston, Philadelphia or Washington.
Throughout all examined techniques, the particulate ranges measured had been two to seven instances what the Environmental Safety Companies’ ambient air high quality requirements advocate over a 24-hour interval of publicity.
The New York Metropolis subway system, a separate community of trains administered by New York State, got here in second place, with charges beneath that of the PATH system however larger than the depend within the three different cities.
“We’re clearly involved,” Rick Cotton, the chief director of the Port Authority of New York and New Jersey, which runs the PATH system, stated Thursday. “We solely acquired the report yesterday, roughly noon. Our plans are to to start with dig into the report.
“We’re completely dedicated to defending the well being and security of our staff, we’re completely dedicated to defending the well being and security of PATH riders, and we’ll dig into this, come to conclusions, and if crucial develop an acceptable motion plan to deal with it,” he stated.
The Metropolitan Transit Authority, the state company that runs New York’s subway system, didn’t reply to requests for remark.
The findings ‘elevate severe well being considerations’
Throughout all techniques, the researchers stated, underground stations confirmed larger quantities of particulate air pollution than was discovered on trains between stations. On-train measurements had been larger than these taken at above-ground stations, and all measurements had been larger than the ambient degree of air pollution exterior of the transit system.
Researchers wrote that an evaluation of the particulate air pollution discovered that throughout the techniques examined, iron accounted for the commonest particulate materials discovered within the air, making up greater than half of the collected particulates.
They wrote that information “strongly means that ambient (particulate matter) isn’t a possible supply” of the air pollution in New York’s underground stations, and that as a substitute, different sources “such because the continuous grinding of the prepare wheels in opposition to the rails, the electrical energy amassing footwear, and diesel soot emissions from upkeep locomotives are necessary sources.”
The authors had been fast to level out that just a few stations had been chosen in every system, and that these stations had been purposely chosen with the expectation that they might have their system’s highest degree of particulate air pollution. The New York MTA system stations had been “a biased pattern,” chosen primarily based on the outcomes of an earlier 2014 research.
“Nonetheless,” they wrote, “our findings clearly point out that (particulate matter) concentrations in underground stations and measured on subway trains are a lot larger than above floor (ranges), at the least throughout rush hour intervals.”
“Even when (the info) symbolize excessive ranges for these stations,” they continued, “(they) elevate severe well being considerations and warrant further investigation.”
Talking Thursday, Port Authority Chairman Kevin O’Toole agreed. “We simply bought the report, we’ll be doing a deep dive the subsequent couple of days,” he stated. “The well being and security of the employees and staff and the general public are of paramount concern.”