; and (B) in the case of a project to be carried out in a county for which an at-risk designation is in effect under section 14526, not more than 70 percent may be provided from amounts appropriated to carry out this section. (c) Sources of assistance Subject to subsection (b), a grant provided under this section may be provided from amounts made available to carry out this section in combination with amounts made available— (1) under any other Federal program (subject to the availability of subsequent appropriations); or (2) from any other source. (d) Federal share Notwithstanding any provision of law limiting the Federal share under any other Federal program, amounts made available to carry out this section may be used to increase that Federal share, as the Appalachian Regional Commission determines to be appropriate. . (b) Clerical amendment The analysis for chapter 145 of title 40, United States Code, is amended by inserting after the item relating to section 14509 the following: 14510. Drug abuse mitigation initiative. .