Nitrogen Oxide

July 20, 2016, 8am PDT
Forty so-called Tier 4 locomotives, a U.S. Environmental Protection Agency designation requiring a dramatic reduction in particulate and nitrogen oxide emissions, will be joining Metrolink's fleet covering 512 track miles in six counties.
Los Angeles Times
March 22, 2016, 10am PDT
The South Coast Air Quality Management District is in the news again, this time for going too easy on the region's big polluters—just what staff had warned would happen before the board fired its well-respected executive director.
Los Angeles Times
February 4, 2016, 10am PST
Volkswagen has already submitted its recall plan for its 2-liter diesel engines—it was rejected by both the EPA and California Air Resources Board. It also needed to submit a recall plan for 3-liter diesel engines to CARB by Feb. 2, which it did.
Bloomberg Business
December 21, 2015, 2pm PST
It took an act of the Supreme Court for India to address the incredibly unhealthy levels of particulate matter in New Delhi. New rules are aimed at diesel cars, SUVs, and taxis. In Beijing, pollution triggered a red alert for only the second time.
The New York Times - Asia Pacific
April 16, 2014, 7am PDT
According to a new EIA report, the cost advantages of liquefied natural gas make it an attractive alternative to diesel fuel for major U.S. freight railroad companies. Hybrid diesel-electric locomotives on order for 5 states will power HSR routes.
Progressive Railroading
March 24, 2014, 6am PDT
Thanks to the 2010 federal requirement of ultra-low sulfur diesel fuel and new Tier 4 emissions standards by the EPA, particulate emissions from non-road diesel engines, including agricultural and construction equipment, have been reduced by 99%.
Environmental Health News