AMENDMENT 0003 – Q&A, SITE VISIT, AND DEADLINE EXTENSION The purpose of Amendment 0003 to solicitation FA449726Q0031 is to: 1. Publish Official Q&A: The official Government responses to initial vendor questions are provided in the attached document: Attachment 8 - FA449726Q0031 QA Log. 2. Announce a Site Visit: A site visit will be held at Dover Air Force Base on 25 June 2026 at 9:30 AM EDT . Attendees must arrive 45 minutes prior to the scheduled start time (at 8:45 AM EDT) for security check-in. Attendance is highly encouraged but not mandatory. Please review the attached document: Attachment 9 - Site Visit Instructions and Deadline Extension. 3. Extend Deadlines: The deadline for final or additional questions is extended to 01 July 2026 @ 1:00 PM EDT. The Quote Response Deadline is extended to 14 July 2026, no later than 1:00 P.M. EDT . ***All other terms, conditions, and deadlines remain unchanged.*** AMENDMENT 0002 The purpose of this Amendment 0002 is to issue a revised Attachment 2 – Quote Schedule . All CLINs related to the 6-month Option to Extend Services (FAR 52.217-8) have been deleted from the Quote Schedule. Quoters shall not propose separate pricing for this extension. The Government will evaluate the 6-month extension in accordance with Attachment 5-52.212-2, Evaluation Addendum ***Action Required: Quoters must use Attachment 2 – Quote Schedule (Revised 03 June 2026) when submitting their pricing packages.*** ***All other terms, conditions, and deadlines remain unchanged.*** AMENDMENT 0001 : The purpose of this Amendment 0001 to solicitation FA449726Q0031 is to add the following document to the solicitation package: Attachment 7 – DAF COMPASS Clauses This attachment includes mandatory DAF Compass clauses regarding: Ombudsman Health and Safety on Government Installations Common Access Cards (CAC) for Contractor Personnel ***All other terms, conditions, and deadlines remain unchanged.*** The 436 Civil Engineer Squadron, Dover Air Force Base (DE) requires a contractor to provide all labor, tools, transportation and supervision necessary to provide a service program to control corrosion, slime and algae in the condensers and service the thermal ice storage systems, closed loop heating and cooling systems, gas-fired heating hot water systems and water softeners at Dover AFB, DE, as further defined in the Performance Work Statement (PWS). 1. This is a combined synopsis/solicitation for commercial services prepared in accordance with the format in Subpart 12, as supplemented with additional information included in this notice. This announcement constitutes the only solicitation. Quotes are being requested and a written solicitation will not be issued. 2. This solicitation is being issued as a Request for Quote (RFQ). 3. The North American Industry Size Classification System (NAICS) code associated with this requirement is 238220 and the Small Business Size Standard associated with this NAICS is $19,000,000.00. 4. The Pro…