Z--INDE REHAB SECOND BANK BLOCK

Critical Acquisition Response Team (CART) - Independence National Historical Park (INDE) - Masonry Rehabilitation of Second Bank Block — Amendment 0003 post 6/17/2026 - addresses contractor asked questions that were received through extended technical period of Monday, June 15, 2026, by close of business. Amendment 0003 DOES NOT extend the closing date and time, and remain Tuesday, June 30, 2026, by no later than 1600 Mountain Time. — Amendment 0002 posted 6/1/2026, and extends closing date and time to Tuesday, June 30, 2026, by no later than 4:00 PM Mountain Time. Adds a 2nd Formal Site Visit on Thursday, June 11, 2026 at 9AM Eastern (see Page 80-81) in Attachment 1 - Amend 0002 - Updated Schedule-SOW-T&Cs - INDE 2nd Bank included with this Amendment 0002. — Amendment 0001 posted 5/19/2026, and extends closing date and time to Friday, June 5, 2026, by no later than 4:00 PM Mountain Time. It also incorporates updated Schedule-SOW-T&Cs, that includes mandatory updates that implement Revolutionary FAR Updates 9, 22 and 23. — Full solicitation is now posted as of April 24, 2026 — A site visit is being hosted Wednesday, April 29, 2026, see Solicitation - Section L for Specific details and location. — Technical Questions are due by close of business on Friday, May 8, 2026

Critical Acquisition Response Team (CART) - Independence National Historical Park (INDE) - Masonry Rehabilitation of Second Bank Block — Amendment 0003 post 6/17/2026 - addresses contractor asked questions that were received through extended technical period of Monday, June 15, 2026, by close of business. Amendment 0003 DOES NOT extend the closing date and time, and remain Tuesday, June 30, 2026, by no later than 1600 Mountain Time. — Amendment 0002 posted 6/1/2026, and extends closing date and time to Tuesday, June 30, 2026, by no later than 4:00 PM Mountain Time. Adds a 2nd Formal Site Visit on Thursday, June 11, 2026 at 9AM Eastern (see Page 80-81) in Attachment 1 - Amend 0002 - Updated Schedule-SOW-T&Cs - INDE 2nd Bank included with this Amendment 0002. — Amendment 0001 posted 5/19/2026, and extends closing date and time to Friday, June 5, 2026, by no later than 4:00 PM Mountain Time. It also incorporates updated Schedule-SOW-T&Cs, that includes mandatory updates that implement Revolutionary FAR Updates 9, 22 and 23. — Full solicitation is now posted as of April 24, 2026 — A site visit is being hosted Wednesday, April 29, 2026, see Solicitation - Section L for Specific details and location. — Technical Questions are due by close of business on Friday, May 8, 2026