Amendment 0001 Posted 8/10/26 to: Provide revised Statement of Work as “Attachment J-1- Statement of Work (SOW) v2” dated 8/10/26. Revise SIR Section B (See added attachment “697DCK-26-R-00374 SIR Ame... Amendment 0001 Posted 8/10/26 to: Provide revised Statement of Work as “Attachment J-1- Statement of Work (SOW) v2” dated 8/10/26. Revise SIR Section B (See added attachment “697DCK-26-R-00374 SIR Amendment 0001- Water Treatment Svcs C90 TRACON”. Amendment 0002 Posted 8/18/26 to: Provide copy of 697DCK-26-R-00374 SIR Amendment 0002- Water Treatment C90 TRACON with answers to vendor submitted questions. *Submission of signed amendment copies required for acknowledgement (Per SIR Amendment Block # 11). Request for Proposal/Solicitation # 697DCK-26-R-00374 for Water Treatment Services at the FAA, Chicago Terminal Radar Control Facility (TRACON), Elgin, Illinois. To view the solicitation and applicable attachments for this procurement, please visit: https://sam.gov/. Select “Contract Opportunities" and then select "Search Contract Opportunities." You can input the solicitation number in the search field. This is a firm, fixed price (FFP) procurement set as full and open competition and a Total Small Business Set-Aside. The Principal North American Industry Classification System (NAICS) size standard code for this requirement is 561210, Facilities Support Services. SITE VISIT A one-time site visit is scheduled for Wednesday, August 12, 2026 at 9:00 AM CT. Attendees must register. Please see further details in Section B of the attached SIR/Solicitation document. QUESTIONS All Questions/Requests for Information (RFI) must be emailed to alicia.m.grant@faa.gov (Contracting Officer) no later than August 14, 2026 at 5:00 PM CT to allow sufficient time to respond. Please include Solicitation/SIR # 697DCK-26-R-00139 in subject line of email correspondence. NO PHONE CALLS, PLEASE. Potential offerors should note that the FAA reserves the right to communicate with one or more offerors at any time during the RFO process Proposals must be received by email no later than the specified date and time listed in Section 8 of the SIR/Solicitation document, to the Contracting Officer at alicia.m.grant@faa.gov. Any responses received after the closing date and time, may not be considered in accordance with AMS provision 3.2.2.3-14, Late Submissions, Modifications, and Withdrawals of Submittals. This RFP is not to be construed as a contract or a commitment of any kind. The Government shall not be liable for payment of any costs attributed to the preparation and submission of requested proposal documentation. LIST OF ATTACHMENTS 697DCK-26-R-00374 SIR Amendment 0001- Water Treatment Svcs C90 TRACON 697DCK-26-R-00374 SIR- Water Treatment Svcs C90 TRACON Attachment J-1- Statement of Work (SOW) v2 Attachment J-2- Wage Determination Attachment J-3- Customer Satisfaction Survey Attachment J-4- Contractor Staffing Questionnaire

A solicitation amendment provides a revised Statement of Work and updated solicitation sections for water treatment services at the FAA Chicago Terminal Radar Control Facility (TRACON) in Elgin, Illinois. This firm-fixed-price procurement is a total small business set-aside with full and open competition, under NAICS 561210 (Facilities Support Services). A one-time site visit is scheduled for Wednesday, August 12, 2026 at 9:00 AM CT, and attendees must register as detailed in the solicitation. All proposals must be submitted electronically to the Contracting Officer, and questions must be directed via email. The government is not liable for any costs incurred in preparing proposals, and this notice does not constitute a contract or commitment.

The FAA is seeking water treatment services at the Chicago Terminal Radar Control Facility (TRACON) in Elgin, Illinois. This is a firm-fixed-price procurement set aside as a total small business opportunity under NAICS 561210. A one-time site visit is scheduled for August 12, 2026 at 9:00 AM CT, and interested parties must register as detailed in the solicitation documents. The full solicitation and attachments are available for review on SAM.gov.