My understanding of the bill at this point in time is that in fact it is unlimited liability where the pipeline would be deemed to be at fault for the release that has occurred.
You do, in effect, have the opportunity to seek recovery to whatever amount would be necessary. In the event that you have some aspect of third-party damage, it does indicate the potential for a cap at $1 billion, but clearly still permits the discretion to recover such costs as the tribunal or the board deem to be necessary.