U.S. Code / Title 40 — Public Buildings, Property,… / Subtitle Iv—Appalachian Regional Development / Chapter 145—Special Appalachian ProgramsTitle 40SubchapterSubchapter Ii—AdministrativeContents§ 14521. Required level of expenditure§ 14522. Consent of States§ 14523. Program implementation§ 14524. Program development criteria§ 14525. State development planning process§ 14526. Distressed, at-risk, and economically strong counties