AMENDMENT 0004 – FINAL Q&A AND UPDATED PWS The purpose of Amendment 0004 to solicitation FA449726Q0031 is to: 1. Publish Final Consolidated Q&A: The official Government responses to the final round of vendor questions following the site visit are provided in the attached document: Attachment 10 - FA449726Q0031 QA Log 2. Issue Updated Performance Work Statement (PWS): This document replaces the original PWS and is provided in the attached document: Attachment 11 - Updated-PWS ***All other terms, conditions, and deadlines remain unchanged.*** 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 …