The National Institute of Standards and Technology (NIST) intends to negotiate a sole-source contract with the Regional Transportation District (RTD) for the procurement of Eco-Passes. This acquisition is aimed at facilitating transportation services, which are vital for the mobility of personnel and operations within the Boulder, Colorado area. Interested contractors may challenge the sole-source decision by submitting an interest letter and capabilities statement, including evidence of a process for annual monetary reimbursements for unutilized Eco-Passes, by December 11, 2025, at 10:00 AM Mountain Daylight Time. For further inquiries, interested parties can contact Lauren Lopez at lauren.lopez@nist.gov or Shawn Borisow at shawn.borisow@nist.gov.