20.1  Notice

If at any time the Contractor becomes aware that a Facility will not or is unlikely to receive an [a Readiness Test Certificate by the Planned Readiness Date or] Acceptance Test Certificate by the Planned Services Commencement Date the Contractor shall as soon as reasonably practicable and in any event within twenty (20) Business Days of becoming aware of the likely delay give notice to the Authority to that effect specifying:

20.1.1  the reason for the delay or likely delay; and

20.1.2  an estimate of the likely effect of the delay on the receipt of [the Readiness Test Certificate or] the Acceptance Test Certificate for the Facility (taking into account any measures that the Contractor proposes to adopt to mitigate the consequences of the delay in accordance with Clause 20.3 (Duty to Mitigate)).