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FILE - A private property sign is attached to a fence outside the old Stauffer chemical plant toxic waste dump site in Tarpon Springs, Fla., on Nov. 30, 2017. (AP Photo/Chris O'Meara, File)

FILE - A private property sign is attached to a fence outside the old Stauffer chemical plant toxic waste dump site in Tarpon Springs, Fla., on Nov. 30, 2017. (AP Photo/Chris O'Meara, File)

FILE - A reservoir near the old Piney Point phosphate mine is seen in Bradenton, Fla., on April 3, 2021. (Tiffany Tompkins/The Bradenton Herald via AP, File)

FILE - A reservoir near the old Piney Point phosphate mine is seen in Bradenton, Fla., on April 3, 2021. (Tiffany Tompkins/The Bradenton Herald via AP, File)

FILE - A sinkhole that opened up underneath a gypsum stack at a Mosaic phosphate fertilizer plant is seen in Mulberry, Fla., on Sept. 16, 2016. (Jim Damaske/Tampa Bay Times via AP, File)

FILE - A sinkhole that opened up underneath a gypsum stack at a Mosaic phosphate fertilizer plant is seen in Mulberry, Fla., on Sept. 16, 2016. (Jim Damaske/Tampa Bay Times via AP, File)