Sydney Olympic Park Authority Act 2001 No 57
Current version for 1 December 2018 to date (accessed 9 August 2020 at 01:49)
Part 6 Section 74
74   Seal of Authority
The seal of the Authority is to be kept by the Chief Executive, or by a member of staff of the Authority authorised in that behalf by the Chief Executive, and may be fixed to a document only:
(a)  in the presence of the Chief Executive or that member of the staff, and
(b)  with an attestation by the signature of the Chief Executive or that member of staff of the fact of the fixing of the seal.