The proposed Energy East pipeline is being rejected by a group representing the Maliseet Nation.
The Wolastoq Grand Council held a news conference Monday to state its opposition to the proposed pipeline that would transport about 1.1 million barrels of Alberta crude oil a day through New Brunswick to Saint John.
"We unanimously oppose the Energy East pipeline project in order to protect our non-ceded homeland and waterways, our traditional land and cultural connection to our lands, waterways and air," said clan mother Alma Brooks.
"The Wolastoq Grand Council has serious concerns for the safety and protection of animals, fish, birds, insects, plants and tree life that sustains our Wolastoq Nation."
Grand Chief Ron Tremblay said the Grand Council does not have an position on the pipeline that is based on science or economics.
"Our values are connected spiritually to the land, water and air and we follow the original instructions from the Great Mystery to protect and preserve our homeland."
Clan mother Hart Perley of Tobique First Nation said the time has come to speak up.
"The premier is adamant about bringing the toxic sludge through our homeland and we're more adamant that it's not going to happen," said Perley.
"We are not allowing the pipeline to come through our homeland. It's not going to happen."
The grand council said the Crown has a legal duty to address and support its concerns.
"The Wolastoq Grand Council will expect from the appropriate Crown delegate and provincial representative, a written acceptance of our traditional philosophy, and our rejection of the Energy East tar sands pipeline as soon as possible."
The Grand Council says the homeland of the Wolastoqewiyik takes in all of New Brunswick as well as parts of Maine and Quebec.