Headquarters Building (HQB) Mechanical and Electrical Upgrades at the Mike Monroney Aeronautical Center (MMAC), Oklahoma City, OK.

ADDENDUM 02 May 21, 2026 NOTICE TO BIDDERS This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents dated February 20, 2025, Addendum Number 02 dated May 21, 2026. Items not specifically revised remain in effect. Acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification. This Addendum consists of seventeen (17) pages. See attached (1) Specification Section and (11) Drawing Sheet. REFERENCE THE SPECIFICATIONS ITEM 1-1 SPECIFICATION SECTION 017419 – CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL The attached Specification Section, dated May 21, 2026, is hereby revised to reflect the project modification eliminating project phasing per client request. Entire specification section has been revised, Client provided. REFERENCE THE DRAWINGS ITEM 1-2 DRAWING SHEET MH101A – MECHANICAL HVAC PLAN – FIRST FLOOR – SECTOR A The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the clarification of valve type used in heating and cooling water piping. DRAWING SHEET MH101B – MECHANICAL HVAC PLAN – FIRST FLOOR – SECTOR B The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the change of valve type used in heating and cooling water piping. DRAWING SHEET MH102A – MECHANICAL HVAC PLAN – SECOND FLOOR – SECTOR A The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the change of valve type used in heating and cooling water piping. DRAWING SHEET MH102B – MECHANICAL HVAC PLAN – SECOND FLOOR – SECTOR B The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the change of valve type used in heating and cooling water piping. DRAWING SHEET MH103A – MECHANICAL HVAC PLAN – THIRD FLOOR – SECTOR A The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the change of valve type used in heating and cooling water piping. DRAWING SHEET MH103B – MECHANICAL HVAC PLAN – THIRD FLOOR – SECTOR B The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the change of valve type used in heating and cooling water piping. DRAWING SHEET M-501 – MECHANICAL DETAILS The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the clarification in valve type and position in the system of the valves used in heating and cooling water piping. FAA MIKE MONRONEY AERONAUTICAL CENTER MECHANICAL AND ELECTRICAL UPGRADES – HEADQUARTERS BUILDING Project Number: 2021-675-00 FRANKFURT-SHORT-BRUZA ASSOCIATES, P.C. 5801 Broadway Extension, Suite 500 Oklahoma City, OK 73118 6973GH-26-R-00081 HQB Mechanical and Electrical Upgrades AMENDMENT 0003,ATTACHMENT 2 -- 1 of 19 -- DRAWING SHEET M-701 – MECHANICAL SCHEDULES The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the addition of a schedule column to clarify the size of VAV boxes as well as modified schedule notes to clarify valve type used in piping to the VAVs. DRAWING SHEET M-702 – MECHANICAL SCHEDULES The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect the addition of a schedule column to clarify the size of VAV boxes as well as modified schedule notes to clarify valve type used in piping to the VAVs. DRAWING SHEET M-703 – MECHANICAL SCHEDULES The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect clarification in schedule notes and valve type used in piping to the VAVs. DRAWING SHEET M-705 – MECHANICAL SCHEDULES The attached Drawing Sheet indicated and dated May 21, 2026 is hereby modified to reflect clarification in schedule notes and notes pertaining to scheduled valves. END OF ADDENDUM Page 1 of 1 FSB | DefineDesignDeliver -- 2 of 19 -- Technical Specification 01 7419 - 1 CONST. WASTE MGMT. & DISP. 11/13/2024 SECTION 01 7419 CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL PART 1 - GENERAL 1.01 SUMMARY A. Section includes administrative and procedural requirements for the following: 1. Salvaging nonhazardous demolition and construction waste. 2. Recycling nonhazardous demolition and construction waste. 3. Recycling demolition and construction universal waste. 4. Disposing of nonhazardous demolition and construction waste. B. Related Sections: 1. Section 01 5000 Temporary Construction Facilities and Controls 2. Section 015723 Stormwater Pollution Prevention 3. Section 02 4100 Demolition. 4. Section 04 2000 Unit Masonry. 5. Section 31 2000 Earth Moving C. Related Documents: Refer to the FAA Construction Waste Management Requirements for Contracts (AMS Clause 3.6.3-22 Dated October 2024) 1.02 DEFINITIONS A. Construction Waste: Building and site improvement materials and other solid waste resulting from construction, remodeling, renovation, or repair operations. Construction waste includes packaging. B. Demolition Waste: Building and site improvement materials resulting from demolition or selective demolition operations. C. Universal Waste: As regulated in Title 40 of the Code of Federal Regulations (CFR) in Part 273, includes batteries, pesticides, mercury-containing equipment, lamps, and aerosol cans. D. Disposal: Removal off-site of demolition and construction waste and subsequent sale, recycling, reuse, or deposit in landfill or incinerator acceptable to authorities having jurisdiction. E. Mike Monroney Aeronautical Center (MMAC) – FAA Facility F. Recycle: Recovery of demolition or construction waste for subsequent processing in preparation for reuse. G. Salvage: Recovery of demolition or construction waste and subsequent sale or reuse in another facility. H. Salvage and Reuse: Recovery of demolition or construction waste and subsequent incorporation into the Work. 1.03 PERFORMANCE REQUIREMENTS A. In performance of this contract, the Contractor must establish a program to minimize waste generation, as well as recycle, reuse, and salvage constru…