(1) to proceed expeditiously with, and complete, the project as approved by the commissioner;

(2) to commence operation of the project upon its completion and not to dispose of the project or any portion thereof or change its use without the approval of the commissioner;

(3) to operate and maintain the solid waste management project in accordance with applicable law and rules and regulations of the commissioner;

(4) to apply for and make reasonable efforts to secure federal assistance for the project;

(5) to secure the approval of the commissioner before applying for federal assistance, in order to maximize the amounts of such assistance received or to be received for all projects in New York state;

(6) to provide for the payment of the municipality's share of the cost of the project. d. A provision that, in the event that federal assistance which was not included in the calculation of the state payment becomes available to the municipality, the amount of the state payment shall be recalculated with the inclusion of such federal assistance and the municipality shall pay to the state the amount by which the state payment actually made exceeds the state payment determined by the recalculation. 2. In connection with each contract, the commissioner shall keep adequate records of the amount of the payment by the state and of the amount of federal assistance, if any, received by the municipality. Such records shall be retained by the commissioner and shall establish the basis for recalculation of the state payment as required herein.