Versions of s. 70(1)
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Except as provided in this section, no contract, condition or notice made or given by a company impairing, restricting or limiting its liability in respect of the transmission of hydrocarbons or any other commodity relieves the company from its liability, unless that class of contract, condition or notice is included as a term or condition of its tariffs as filed or has been first authorized or approved by order or regulation of the Board.