Sentence examples for tightening pollution from inspiring English sources

Some of the administration's recent regulations have been helpful — one tightening pollution controls on small engines like lawnmowers, another tightening lead emissions.

At the time, U.S. regulators had been tightening pollution controls on diesels and diesel fuel for years, culminating with the demand to cut smog-forming nitrogen oxide emissions 90% by 2010.

In granting the requests of four of those states, the agency tightened pollution controls for smog nationwide.

It has withheld permits for coal mines, tightened pollution controls for power plants that use coal, and is in the process of drafting regulations on greenhouse gases.

And, regulators may come under pressure to tighten pollution standards to protect the small fraction of the population that is most sensitive to a particular substance.

Federal regulators announced yesterday that they had tightened pollution standards for some dredge materials to be dumped off the New Jersey shore.

On one side, Assembly Democrats have called for major changes that would tighten pollution standards and require impact studies in poor and minority communities where such plants would be placed, while on the other side, Senate Republicans want to renew the law as is.

Friday's vote marks the third time since January 2014 that regional air quality regulators have tightened pollution limits on battery recyclers.

The heavy smog in Shanghai also comes as provinces to the north tighten pollution regulations for steel mills and cement plants, pushing production south.

But in terms of pollution produced, they are by far the worst offenders, which is why a White House decision to close a loophole around them was seen as at least as important as a move a year ago to tighten pollution-control rules for cars and light trucks.

Administration officials say Mexico has tightened its pollution standards for trucks so that they now conform with American standards.