R428--Indoor Air Quality Testing
This is a solicitation for a base plus 4 option year contract to provide Indoor Air Quality (IAQ) Assessment & Associated Sampling Services for the Asheville…
Posted: Apr 01, 2026Awarded: Apr 01, 2026
NAICS 541
Browse recent opportunities tied to this NAICS code. Open any notice to view details, attachments, and the direct SAM.gov link.
Updated Apr 01, 2026 • Page 49
Use filters to refine your search; results open in the main Opportunities search.
Delphi
Department of Health and Human ServicesNational Institutes Of HealthSolicitationNAICS • 541715PSC • AN13Solicitation • ARPA-H-SOL-26-153
Solution Summary due date: Wednesday, April 8, 2026 at 5:00PM ET. A solution summary is required in order to submit a proposal. The Delphi Program vision is to…
Posted: Apr 01, 2026Due: May 13, 2026• Due in 24d
NGA - Boosting Innovative GEOINT - Science & Technology Broad Agency Announcement (BIG-ST BAA)
Department of DefenseNational Geospatial-intelligence Agency (nga)SolicitationNAICS • 541715PSC • AC13Solicitation • HM047623BAA0001
The Boosting Innovative GEOINT-Science and Technology (BIG-ST) Broad Agency Announcement (BAA) invites proposers to submit innovative concepts to address hard…
Posted: Apr 01, 2026Due: Dec 15, 2026• Due in 240d
Office of Head Start (OHS) Monitoring - Logistics Support
Department of Health and Human ServicesOffice Of The Assistant Secretary For Financial Resources (asfr)Special NoticeNAICS • 541519PSC • DA01Solicitation • 7571MN26F80016
The purpose of this special notice is to notify industry of the transfer of Department of the Interior Order Number 140D0425F0941, issued under GSA MAS…
Posted: Apr 01, 2026No due date posted
Spectrum Mission Data and Information Engineering Services
Department of DefenseDept Of The NavySources SoughtNAICS • 541330PSC • AC33Solicitation • N6893625RFPREQ450000E0003
Naval Air Warfare Center, Weapons Division (NAWCWD) is seeking qualified vendors to provide engineering and technical services and software support equipment…
Posted: Apr 01, 2026Due: Apr 24, 2026• Due in 5d
Sources Sought - Southwest Regional Maintenance Center (SWRMC) Hull, Mechanical, and Electrical (HM&E) Fleet Technical Assistance (FTA) Follow-On Engineering Services
Department of DefenseDept Of The NavySources SoughtNAICS • 541330PSC • R425Set-Aside • NONESolicitation • N5523626FXXXX
This is a sources sought notice for information and acquisition planning purposes. This is not a request for proposal (RFP) and a formal solicitation is not…
Posted: Apr 01, 2026Due: Apr 10, 2026• Closed
Power System Modeling and Analysis FY26
Department of DefenseDept Of The Air ForceSources SoughtNAICS • 541330PSC • R425Solicitation • FA805126Q4002
The United States Air Force (USAF), Air Force Civil Engineer Center (AFCEC) Operations Directorate (CO), Tyndall AFB, FL has a requirement to provide Power…
Posted: Apr 01, 2026Due: May 01, 2026• Due in 12d
Declassification Support Services
Department of DefenseDept Of The NavySources SoughtNAICS • 541330PSC • R425Set-Aside • SBASolicitation • H91269627909
SOURCES SOUGHT NOTICE Note: Despite this source sought notice being posted to SAM.gov, it is anticipated that this follow-on requirement will again be…
Posted: Apr 01, 2026Due: Apr 15, 2026• Closed
R--Plant-model Development for Sequoyah Nuclear Power
TRAC/RELAP Advanced Computational Engine (TRACE) and Purdue Advanced Reactor Core Simulator (PARCS) Plant-model Development for Sequoyah Nuclear Power Plant.…
Posted: Apr 01, 2026Due: May 15, 2026• Due in 26d
F999--Gems Technical Assistance
THIS REQUEST FOR INFORMATION (RFI)/SOURCES SOUGHT IS ISSUED SOLELY FOR INFORMATION AND PLANNING PURPOSES ONLY AND DOES NOT CONSTITUTE A SOLICITATION. THE…
Posted: Apr 01, 2026Awarded: Apr 01, 2026
R428--Indoor Air Quality Testing
This Pre-solicitation notice is not a request for formal proposals or quotes. Solicitation, 36C24626Q0428, will be issued on or about April 1, 2026. The…
Posted: Apr 01, 2026Awarded: Apr 01, 2026
SATCOM NAVIFOR
Department of DefenseDept Of The NavySources SoughtNAICS • 541611PSC • R799Set-Aside • SBASolicitation • N36001SATCOMNAVIFOR
Naval Supply Systems Command (NAVSUP) Fleet Logistics Center (FLC) Norfolk is seeking information on qualified and experienced sources for planning purposes in…
Posted: Apr 01, 2026Due: Apr 08, 2026• Closed
SF 330 Request for Large A&E Services, Ellsworth AFB, SD
Department of DefenseDept Of The Air ForcePresolicitationNAICS • 541330PSC • C219Set-Aside • NONESolicitation • FA469026RA-E
This notice has been amended as of 31 March 2026 to address questions from potential vendors. Please see the attachments labeled "Q and A" for a collection of…
Posted: Apr 01, 2026Due: May 04, 2026• Due in 15d
Explore related
Browse common filters found across the opportunities listed on this page.
Agencies
Solicitation numbers
Market trends
Dept Of The Navy trendsDepartment of Veterans Affairs trendsDept Of The Air Force trendsNational Institutes Of Health trendsNational Geospatial-intelligence Agency (nga) trendsOffice Of The Assistant Secretary For Financial Resources (asfr) trendsNuclear Regulatory Commission trendsNAICS 541330 trendsSector 54 trendsNAICS 541620 trendsNAICS 541715 trendsNAICS 541690 trendsNAICS 541519 trendsNAICS 541611 trendsPSC R425 trendsPSC R428 trendsPSC AN13 trendsPSC AC13 trendsPSC DA01 trendsPSC AC33 trendsPSC F999 trendsPSC R799 trendsNONE trendsSBA trends
Not affiliated with the U.S. Government. Verify official details and attachments on SAM.gov before bidding.