A. The work covered under this section includes the furnishing of all material, equipment and the performing of all labor to complete additional work directed by the Engineer. B. This work includes but is not limited to additional work not included in the scope of any other item in the Proposal Form. Including hidden or unforeseen site conditions and approved extra work required by the Engineer after award of the Contract, which was not included in the advertised Contract Documents and within the general scope of the Contract. C. This allowance is for the exclusive use of the MTA and is to be distributed at its sole discretion. All unused monies remaining in the allowance at Contract closeout shall be deleted from the Contract. D. This allowance is for the cost associated with changes related to direct cost only. Changes/Change Orders including time related delay costs such as indirect field, home office overhead, etc. shall not be issued and/or paid under this section. E. The work covered under this section does not include any time extension to the Contract or to any intermediate milestones. F. Any work to be performed under this section will be approved in writing and be authorized at the discretion of the Engineer.