A bill to authorize the Secretary of the Interior to acquire and to convey certain lands or interests in lands to improve the management, protection, and administration of Colonial National Historical Park, and for other purposes.

Authorizes the Secretary of the Interior to transfer that portion of the existing sewage disposal system within the Colonial National Historical Park to York County, Virginia, without reimbursement, together with such rights-of-way determined to be necessary to maintain and operate such system.

Authorizes the Secretary to enter into a cooperative agreement with York County to pay a specified maximum amount of the repair and rehabilitation costs for the system. Requires the cooperative agreement to: (1) reduce or eliminate the amounts charged to the National Park Service for its sewage disposal; and (2) minimize the impact of the system on the Park and its resources. Prohibits such system from being enlarged or substantially altered without Park Service concurrence.

Authorizes appropriations.