7.15.1 The Authority should consider how rectification of defects or items of snagging will be addressed. Ordinarily the Contractor's Construction Sub-Contractor would carry out this work and consequently the Authority will need to ensure that it and/or the Authority Service Provider gives appropriate access to the Contractor's Construction Sub-Contractor. If the rectification works are not the responsibility of the Contractor's Construction Sub-Contractor then parties should agree the practice for carrying out such rectification works, including how they will be programmed, the standards which will apply and the level of redress available should the agreed practice not be implemented.