Last week, President Gabriel Boric hit out at Chile's record on polluting the environment.
"We don't want any more areas of (environmental) sacrifice," he said.
"There are now hundreds of thousands of people who live in our country exposed to severe degradation of the environment that we have provoked or allowed and, as a Chilean, that makes me feel ashamed."
Pollution accumulated in the area of Quintero and Puchuncavi, home to around 50,000 people, after the government decided in 1958 to convert it into an industrial center that now hosts four coal-fired power stations and oil and copper refineries.
