This bill establishes the Municipal Landfill Upgrading and Infrastructure Improvement Grant Program within the New Jersey Department of Environmental Protection (DEP) to provide financial assistance to municipalities for upgrading and maintaining certain municipally owned sanitary landfill facilities that were improperly closed before June 1987. The program aims to help municipalities comply with DEP standards for proper closure, capping, and post-closure care of these facilities, as well as to mitigate pollution and health hazards associated with them. The bill appropriates $10 million from the General Fund to support this initiative.

Eligible municipalities can apply for grants to cover costs related to infrastructure improvements and ongoing management of these landfill facilities. Applications must include specific information, such as a certification of ownership and improper closure, the amount of funding requested, and a detailed project description. The DEP commissioner is tasked with developing a project priority system to rank applications based on their potential impact on pollution prevention and health hazard monitoring. Additionally, municipalities receiving grants must submit regular expenditure reports, and the commissioner is required to provide annual reports to the Governor and Legislature on the program's effectiveness and remaining funds.