4.B) Authorize - Public Hearing to Consider a Boundary Line Adjustment and Vacation of Various Easements Across County-Owned Property and Prince William County School Board-Owned Properties, Located at 8250 Ashton Avenue, 10850 Crestwood Drive, and 11000 Crestwood Drive, in Connection with the Rosemont Lewis Park Elementary School Project (Plan #SPR2021-00038) - Brentsville Magisterial District - Thomas Smith, Public Works - Mobility, Economic Growth, and Resilience