The Navajo Nation Superfund Program (NNSP) is one of four programs within NNEPA’s Waste Regulatory and Compliance Department.  The NNSP is headed by an Environmental Program Supervisor who reports to the Waste Regulatory and Compliance Department Manager and the Executive Director of NNEPA.

The NNSP is responsible for implementing the Navajo Nation Comprehensive Environmental Response, Compensation, and Liability Act (NNCERCLA), 4 N.N.C. §§ 2101-2805, on the Navajo Nation.  The NNSP also partners with the U.S. EPA to implement the federal CERCLA on the Navajo Nation. 

These laws authorize the NNSP and the U.S. EPA to gather information on releases or threatened releases of hazardous substances, to respond to such releases, and to require responsible parties to conduct and pay for cleanup of such releases, including at abandoned sites, known as Superfund sites.  They also provide for voluntary cleanup of contaminated sites to encourage reuse of such sites. The NNSP uses these authorities to address abandoned uranium mines (AUMs), other previously contaminated sites (under the Brownfields program), and uranium-contaminated residences (the Contaminated Structures program).