Pipeline saga began with Kinder Morgan pitch in 2012

Key dates in the history of the Trans Mountain pipeline:

October 1953: The Trans Mountain pipeline begins shipping oil with an initial capacity of 150,000 barrels a day.

2006-08: The Anchor Loop project increases capacity to 300,000 barrels a day.

Feb. 21, 2012: Kinder Morgan says it wants to expand the Trans Mountain pipeline after receiving support from oil shippers and will begin public consultations.

November 2014: More than 100 people are arrested after they camp out in a conservation area on Burnaby Mountain, east of Vancouver, to block crews from conducting drilling and survey work related to the pipeline expansion. Most of the charges are later dropped.

May 29, 2016: The National Energy Board recommends approval of the pipeline, subject to 157 conditions, concluding it is in the public interest. Nov. 29, 2016: Prime Minister Justin Trudeau approves the Trans Mountain expansion, part of a sweeping announcement that also saw approval of Enbridge’s Line 3 pipeline replacement, but the end of its Northern Gateway project.

Jan. 11, 2017: Then B.C. premier Christy Clark announces her support for the project, saying Kinder Morgan has met five government conditions, including a revenue-sharing agreement worth up to $1 billion.

May 25, 2017: Kinder Morgan makes its final investment decision to proceed with the development, now estimated to cost $7.4 billion, subject to the successful public offering of Kinder Morgan Canada.

May 29, 2017: The B.C. NDP and Greens agree to form a coalition to topple the Liberal party, which won a minority government in an election earlier in the month. The parties agree to “immediately employ every tool available” to stop the project. Oct. 26, 2017: Kinder Morgan Canada asks NEB to allow work to begin despite a failure to obtain municipal permits from the City of Burnaby. Jan. 17, 2018: Kinder Morgan Canada warns the Trans Mountain expansion project could be a year behind schedule.

Jan. 30, 2018: B.C. government moves to restrict any increase in diluted bitumen shipments until it conducts more spill response studies, a move that increases the uncertainty for Trans Mountain.

April 8, 2018: Kinder Morgan Canada suspends non-essential spending on the Trans Mountain expansion project and sets a May 31 deadline to reach agreements with stakeholders.

May 29, 2018: The federal government announces a deal to buy the Trans Mountain pipeline and expansion project from Kinder Morgan Canada for $4.5 billion.