This notice provides details for a federal contract opportunity for retro-commissioning mechanical corrections. The Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 4 is soliciting proposals under solicitation number 36C24421R0005 to provide retro-commissioning mechanical corrections for the Z1DA project. Interested parties should submit a proposal by the current deadline to perform retro-commissioning of mechanical systems and correct any deficiencies found. The work includes conducting mechanical system assessments, developing correction plans, and implementing repairs to optimize systems and improve energy efficiency. Proposals are due within two weeks for consideration, with contract award anticipated by the end of the fiscal year.