...as little as possible. Then:
....Enbridge representatives went door to door promising that they would pay for spill damages, Mayhall said.
“The statements at issue, that were made in Defendants’ [Enbridge's] press releases and brochure, were mere expressions of intention, not offers.”
This post writ Because there's talk going about that an oil-spill wouldn't cost the B.C. government a penny.