nitrogen oxides

EPA investigating Navistar over engine dates

| February 16, 2012

Company, facing millions of dollars in potential fines, says its "2010 transition was appropriate."

Navistar sues EPA again over SCR rule

Jack Roberts | July 15, 2011

Navistar alleges nitrogen oxide emissions skyrocket when drivers don't keep diesel exhaust fluid topped off.

Oakland port truckers seek emissions rule delay

| March 01, 2011

Drayage trucking companies that serve the Port of Oakland, which use primarily owner-operators, are seeking support to delay a California Air Resources Board mandate that requires trucks to be retrofitted with nitrogen oxide-reduction equipment by ...

Los Angeles port says emissions dropped

| June 07, 2010

Diesel particulate matter emissions in 2009 dropped by 37 percent from 2008 and nitrogen oxide emissions fell 28 percent.

Navistar, EPA settle suits over SCR certification

| May 04, 2010

The agreement calls for the agency to hold a public workshop or hearing to address the issues Navistar raised.

Navistar drops emissions equipment suit against CARB

| April 23, 2010

The truck and engine maker had asked a state court to rule CARB was improperly certifying 2010 diesel engines equipped with selective catalytic reduction.

California fines for diesel emission violations

Jill Dunn | February 22, 2010

The state's Air Resources Board has penalized three state trucking companies a total of $43,000 for diesel truck violations.

California fines for diesel emission violations

Jill Dunn | February 22, 2010

The state's Air Resources Board has penalized three state trucking companies a total of $43,000 for diesel truck violations.

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