MTBE

New Jersey will pay for the project with money from court settlements with makers and sellers of MTBE, a gasoline additive that helped boost octane ratings, but which tended to separate from stored gasoline and leak into the ground in many spots in the U.S., contaminating water supplies.

Among them are arsenic and MTBE, a petroleum-based gasoline additive that has been used since the 1970s to reduce smog-causing emissions.

They include perfluoroalkyl and polyfluoroalkyl substances, collectively known as PFAS; 1,4-dioxane; and MtBE.

In 2013, a jury found that Exxon Mobil must pay the state $236 million to help clean groundwater contaminated with a gasoline additive known as MTBE.

Porrino said ConocoPhillips was one of 50 oil and chemical firms sued in 2007 by the state over ground water contamination from a gasoline additive called MTBE.