Climate change will put at least 60 percent of the country’s Superfund sites at risk from flooding and other climate impacts.

Superfund sites are locations around the U.S. that are contaminated due to the dumping of or improper management of hazardous waste. These sites include places like landfills, processing plants, and mining sites. The Comprehensive Environmental Response, Compensation and Liability Act, otherwise known as CERCLA, was established in 1980 to handle the management of these sites.

The new report from the Government Accountability Office obtained by the AP calls on EPA chief Andrew Wheeler to directly address how the agency will deal with climate change as part of its responsibility to protect Superfund sites.

Of the 1,571 sites the GAO examined, 945 are at risk. 783 are at risk from flooding, 234 are vulnerable to increased wildfires, and 187 are at risk from storm surge caused by intense hurricanes.

“By refusing to address the worsening impacts of climate change—from flooding to wildfires to more frequent extreme weather events—at our nation’s Superfund sites, this EPA is putting public health at risk,” Sen. Tom Carper (D-DE) said.

The GAO’s review did find at least four EPA’s around the country that had climate change plans in place in an attempt to protect the public from mercury, arsenic, and other types of dangerous waste found in the Superfund sites.