; and (B) those lands and properties administered by the National Park Service and the General Services Administration located in the Reserve, Area I, and Area II as depicted on the map entitled Commemorative Areas Washington, DC and Environs , numbered 869/86501 B, and dated June 24, 2003, that are located outside of the territory ceded and relinquished to the State of Maryland pursuant to the retrocession under section 102 of the Washington, D.C. Residents Voting Act. . (3) Temporary site designation Section 8907(a) of such title is amended by striking the District of Columbia and inserting the Federal District and its environs . (4) General conforming amendments Chapter 89 of such title is amended by striking the District of Columbia and its environs each place it appears in the following sections and inserting the Federal District and its environs : (A) Section 8901(2) and 8901(4). (B) Section 8902(a)(4). (C) Section 8903(d). (D) Section 8904(c). (E) Section 8905(a). (F) Section 8906(a). (G) Section 8909(a) and 8909(b). (5) Additional conforming amendment Section 8901(2) of such title is amended by striking the urban fabric of the District of Columbia and inserting the urban fabric of the area serving as the seat of the Government of the United States, as described in section 112 of the Washington, D.C. Residents Voting Act . (d) Effective date This section and the amendments made by this section shall take effect on the date of the retrocession under section 102. 315. Role of Army Corps of Engineers in supplying water (a) Continuation of role Chapter 95 of title 40, United States Code, is amended by adding at the end the following new section: 9508. Applicability to Federal District and certain portion of State of Maryland (a) In general Effective upon the retrocession under section 102 of the Washington, D.C. Residents Voting Act, any reference in this chapter to the District of Columbia shall be deemed to refer to the Federal District or the territory ceded and relinquished to the State of Maryland