The company wants to twin an existing pipeline that runs from the Edmonton area to a refinery and tanker port in Metro Vancouver.
The expansion would increase the capacity from 300,000 to 750,000 barrels a day of crude and refined oil.
Oil pipelines and tanker ports have become a hot issue in the province, where Enbridge's proposed Northern Gateway pipeline to Kitimat has met with vocal opposition.
Information sessions on the Trans Mountain project began last month and a regulatory review is expected to get underway next year.
Sven Biggs of Tanker Free BC says many people showed up Saturday in North Vancouver to voice their concerns. (CKNW-The Canadian Press)