This is a combined synopsis/solicitation for a construction project to build a reinforced masonry barrier wall and associated site improvements at The Presidents House in Independence National Historical Park, Philadelphia, Pennsylvania. The work includes excavation, concrete foundations, masonry wall installation, protection of historic resources, coordination with park staff, site restoration, and cleanup. A site visit is scheduled for August 12, 2026, at 12:00 p.m. EDT, with RSVP required by August 10, 2026, and written questions due by August 17, 2026. This requirement is a total small business set-aside under NAICS code 238140 (Masonry Contractors) with a $19.0 million size standard. All work must comply with contract drawings, specifications, and applicable federal, state, local, and National Park Service requirements.