The Department of Transportation, Federal Aviation Administration En Route Construction Branch has a need to replace humidifiers at Minneapolis Air Route Traffic Control Center located in Farmington, Minnesota. The estimated construction magnitude for this requirement is between $250,000 and $500,000. Please see the attached Request for Offerors (RFO) package for details. A one-time site visit is scheduled for Wednesday, July 22, 2026 at 9:00 AM Local Time. Site visit attendees will meet with Mr. Alexander Meyer at the Minneapolis ARTCC Guard Station located at 512 Division St, Farmington, MN. 55024. Please have REAL-ID Act compliant identification ready for inspection upon arrival. Site visit attendees shall pre-announce their intent to inspect the site no later than noon Pacific Time on Monday, July 20, 2026. Prospective offerors shall email the names of all site visit attendees to both mark.salum@faa.gov AND alexander.l.meyer@faa.gov. Requests for Information (RFIs) arising from the site visit shall be emailed to mark.salum@faa.gov no later than noon Pacific Time on Friday, July 24, 2026. RFI responses will be provided in writing via solicitation amendment only. No RFIs will be answered during the site visit. Offers are due no later than noon Pacific Time on Friday, July 31, 2026 unless otherwise amended. All offers shall be emailed to mark.salum@faa.gov. NOTE: ALL SUBMISSIONS MUST HAVE A TOTAL FILE SIZE OF LESS THAN 10MB. EMAILS CONTAINING MORE THAN 10MB OF ATTACHMENTS WILL BE REJECTED BY FAA'S EMAIL SYSTEM. OFFERORS MAY SUBMIT MULTIPLE EMAILS IF FILE SIZED WILL EXCEED 10MB IN TOTAL.