; and (4) employ nature-based solutions that focus on protection, restoration, or management of ecological systems to safeguard public health, provide clean air and water, increase natural hazard resilience, and sequester carbon. (j) Prohibition on training repayment As a condition of receiving a grant or technical assistance under this section, an eligible entity shall certify that the eligible entity does not use, and if the eligible entity contracts with any staffing agency or training provider, that such agency or provider does not use, any provision in employment agreements, job training agreements, or apprenticeship program agreements that would require an employee or training or apprenticeship program participant to pay a debt if the employee or training or apprenticeship program participant's employment or work relationship or training period with a specified employer or business entity is terminated. (k) Environmental justice communities The Secretary shall ensure that not less than 50 percent of grant funds awarded under subsection (b) are used for sustainability and resiliency plans for proposed projects located in environmental justice communities. (l) Authorization of Appropriations There is authorized to be appropriated to the Secretary to carry out this section $5,000,000,000 for fiscal year 2024, to remain available until expended. IV Health care sector decarbonization 401. Office of Sustainability and Environmental Impact (a) Establishment There is hereby established in the Centers for Medicare & Medicaid Services an Office of Sustainability and Environmental Impact (in this section referred to as the Office ) to prepare the health care system for the impacts of climate change by supporting health care decarbonization, sustainability, and environmental efforts and to ensure that the health care system minimizes and mitigates its climate harm while advancing patient health and safety. (b) Priority goals The Office shall— (1) collaborate with the Office of Climate Change and Health Equity, the