Chad Hipolito/Canadian Press British Columbia Green party leader Andrew Weaver speaks during a press conference in the Hall of Honour at Legislature in Victoria on May 30, 2017.

OTTAWA — B.C. Green Party Leader Andrew Weaver says he hopes watered-down language in official cabinet mandates doesn't mean Premier John Horgan has changed his position on fighting the Kinder Morgan pipeline. HuffPost Canada reported on Tuesday that the new B.C. NDP government's mandate letters make little mention of the party's campaign promise to fight the Trans Mountain expansion project. Horgan's letter to Environment and Climate Change Minister George Heyman calls on him to defend B.C.'s interests rather than stop the pipeline. "In your role as Minister of Environment and Climate Change Strategy, I expect that you will make substantive progress on the following priorities," Horgan states. "Employ every tool available to defend B.C.'s interests in the face of the expansion of the Kinder Morgan pipeline, and the threat of a seven-fold increase in tanker traffic on our coast."

Kevin Light/Reuters British Columbia Green leader Andrew Weaver and New Democrat leader John Horgan answer questions in the British Columbia legislature building in Victoria on May 30, 2017.

In a statement to HuffPost, Weaver said: "I hope the change in language we've seen in the Ministerial mandate letter isn't indicative of a change in the NDP's position on this project." He added that the Greens have always been clear on their position on the Trans Mountain expansion project. During this spring's election campaign, the NDP pledged to "use every tool in our toolbox to stop the project from going ahead." "The Kinder Morgan pipeline is not in BC's interest," the party's platform stated. "It means a seven-fold increase in tanker traffic. It doesn't, and won't, meet the necessary conditions of providing benefits to British Columbia without putting our environment and our economy at unreasonable risk." As the Greens and the NDP were negotiating an agreement that would allow them to defeat the Liberals and give the New Democrats a stable minority government, Weaver made it clear their joint opposition to the pipeline was a key factor to his party backing. The Kinder Morgan pipeline is not in BC's interest.NDP party platform "Kinder Morgan was critical to us," he told reporters before the partnership was formally announced. During the May election, the B.C. NDP won 41 seats, the Liberals 43, and the Greens held the balance of power with three seats. As an intervenor in the National Energy Board process, Weaver told HuffPost the review process was "fundamentally flawed."

Chris Helgren/Reuters Protesters hold a rally at City Hall before a march against the proposed expansion of Kinder Morgan's Trans Mountain Pipeline in Vancouver on Nov. 19, 2016.