Unless otherwise provided in this Agreement, all notices, consents, approvals, requests and other communications required or permitted to be given to a Party hereunder shall be in writing and sent prepaid by hand delivery, by certified or registered mail, by expedited commercial or postal delivery service, or by facsimile or email if also sent by one of the foregoing, to the address for such Party specified in Annex I or such other address as such Party shall specify from time to time in a notice to the other Party.  Any of the foregoing communications shall be effective when delivered, if such delivery occurs on a Business Day; otherwise, each such communication shall be effective on the first Business Day following the date of such delivery.  A Party receiving a notice that does not comply with the technical requirements of this Section 18.12  may elect to waive any deficiencies and treat the notice as having been properly given.