ITHACA, N.Y. -- Local environmental groups are speaking out about the new proposed expansion of a pipeline that would run through the Southern Tier and Mohawk Valley.

Dominion Transmission is currently working on their New Market project, which would build two new compression stations. One would be in Chemung County, the other in Madison County.

Opponents say that Dominion has a history of water contamination across the state from Ithaca to New Hartford. They're urging Gov. Cuomo to intervene and deny the New Market project a water quality certification.

If that happens environmentalists say they would then want to clean contaminated areas.

"We are now working with citizens and communities all across the state where these problems were never reported to the public and we're trying to work with them to make sure that these problems get cleaned up without further delay," said Walter Hang, Toxics Targeting president.

The New Market project is currently in a public comment period which ends August 5th.