Notwithstanding any other provision of law, in any case where the Administrator of the Environmental Protection Agency finds that the total of all grants made under section
1281 of this title for the same treatment works exceeds the actual construction costs for such treatment works (as defined in this chapter) such excess amount shall be a grant of the Federal share (as defined in this chapter) of the cost of construction of a sewage collection system if—
The total of all grants for sewage collection systems made under this section shall not exceed $2,800,000.