(a) Every agreement made under this subchapter, prior to and as a condition precedent to its entry into force, shall be submitted to the Attorney General, who shall determine whether the agreement is in proper form and compatible with the laws of this state.
(b) The Attorney General shall approve any agreement submitted to him under this subchapter unless he shall find that it does not meet the conditions set forth in this subchapter and shall detail in writing addressed to the governing bodies of the municipalities concerned the specific respects in which the proposed agreement fails to meet the requirements of law.
(c) Failure to disapprove an agreement submitted under this subchapter within twenty (20) days of its submission shall constitute approval thereof.