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 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 must apply for grants, providing detailed information about the landfill facility, the funding sought, and the specific projects for which the grant is requested. The bill outlines the requirements for grant applications, including a certification of ownership and improper closure, a project description, and a list of other potential funding sources. Additionally, 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. Municipalities receiving grants must submit regular expenditure reports, and the commissioner is required to report annually on the program's effectiveness and remaining funds.