; and (ii) the cost of construction for replacing 10 percent of existing publicly owned pipes and other devices and systems for the conveyance of wastewater to publicly owned treatment works over the 20-year period following the date of the estimate; ; and (D) by striking shall make (A) a detailed estimate and inserting the following: shall make— (A) a detailed estimate . 4. Additional eligible use of allotted funds Section 603 of the Federal Water Pollution Control Act ( 33 U.S.C. 1383 ) is amended by adding at the end the following: (k) Additional eligible use of allotted funds Notwithstanding any other provision of this section, each fiscal year, a State may reserve up to 0.5 percent of the amounts allotted to the State under this title and section 205(m) for that fiscal year to carry out activities necessary to create the detailed estimate under section 516(b)(1)(B). .