66. A guarantee provided in the form of a security or a guarantee policy or a letter of credit must have a term of not less than 12 months. At least 60 days before the expiry of the guarantee, the proponent must send a renewal of the guarantee or any other guarantee that meets the requirements of sections 63 and 64 to the Minister of Sustainable Development, Environment and Parks.
The guarantee must also contain a clause setting the time period for filing a claim that alleges failure by the operator to perform obligations at not less than 12 months after the expiry of the guarantee or, as the case may be, its revocation, rescission or cancellation, whichever occurs first.