A veteran Liberal MP has gone public with her dissatisfaction over her government approving a controversial pipeline.

"Cabinet’s decision to approve the Kinder Morgan Trans Mountain Expansion project is incredibly disappointing for me and for many in Vancouver Quadra and British Columbia," Joyce Murray said in a statement to constituents this evening. "I worked hard to represent your concerns in Ottawa. I also stand in support of my colleagues in government in their inclusive approach to decision making that considers more voices, a greater diversity of viewpoints and wider consultation and consideration than ever before.'

At the same time, Murray praised the Liberal cabinet for not allowing the Northern Gateway project.

"I am very pleased that my seven years of effort to protect B.C.’s north coast by legislating a ban on crude oil tanker traffic have now born fruit," she stated. "I ask you to join me in celebrating the protection of the Great Bear rainforest and our majestic north coast announced today."

She claimed that the Liberal government is ultimately "moving Canada in the right direction with many positive environmental, climate, and clean energy initiatives and no one project will diminish my commitment to reducing national greenhouse gas emissions, protecting ecosystems and ensuring better health and well-being for all Canadians".

The Kinder Morgan project will triple bitumen shipments to 890,000 barrels per day from Alberta to B.C.

When it's completed, it will result in a nearly sevenfold increase in the number of oil tankers travelling through Burrard Inlet, reaching approximately 400 per year.

For many years, Murray has been an oustpoken critic of rising greenhouse gas emissions. Her SFU master's thesis in 1992 focused on policy options for grappling with the reality of climate change.