Visitor Sign-In These four locations serve as visitor check-in/out locations for the Beltsville Agricultural Research Center: Building 003 lobby desk for all visitors to BARC-West Building 302 (Log Lodge) front desk for all visitors to BARC-East and APU Building 426 front desk in the Engineering & Planning section for all contractor personnel The receptionist desk in the Administration Building of the U.S. National Arboretum will serve as the visitor check-in/out for that location.       Last Modified: 10/31/2006