Qualla: Piney Point Phosphate Plant

Piney Point Phosphate Plant: Introduction

Mon, 23 Feb 2026 00:00:00 GMT

Mulberry Corporation abandoned the property with 48 hours' notice. In January 2001, the company that owned the Piney Point phosphate plant in Manatee County, Florida, notified the government that it could no longer afford to maintain environmental security at the site, then declared bankruptcy and walked away. Left behind were massive phosphogypsum stacks -- radioactive byproducts of phosphate processing -- and hundreds of millions of gallons of contaminated wastewater sitting in earthen reservoirs above the surrounding neighborhoods and Tampa Bay. It was not the first time this site had been abandoned, and it would not be the last time it threatened catastrophe.

Piney Point Phosphate Plant: A Toxic Carousel of Owners

Mon, 23 Feb 2026 00:00:00 GMT

Borden Chemical opened the industrial plant in September 1966 to process phosphate, a key ingredient in fertilizer. The site sat in Manatee County, near Port Manatee on the Gulf Coast. By 1986, it had been sold to FCS Energy, which was absorbed into Consolidated Minerals. By 1988...

Piney Point Phosphate Plant: Stacks of Poison

Mon, 23 Feb 2026 00:00:00 GMT

Phosphogypsum is the radioactive waste left over when phosphate rock is processed into fertilizer. It accumulates in enormous stacks -- flat-topped hills of chalky material that can cover hundreds of acres and rise tens of stories high. At Piney Point, the stacks enclosed reservo...

Piney Point Phosphate Plant: The Dam Breaks

Mon, 23 Feb 2026 00:00:00 GMT

On March 25, 2021, leaks appeared in the containment wall of a holding pool atop a phosphogypsum stack at Piney Point. The reservoir held wastewater from the plant's former operations as well as seawater from a dredging project at Port Manatee. The leak worsened over the followin...

Piney Point Phosphate Plant: Tampa Bay Pays the Price

Mon, 23 Feb 2026 00:00:00 GMT

The controlled discharge into Tampa Bay was an act of deliberate sacrifice: poison the bay now, or risk something far worse if the dam failed completely. The wastewater was not classified as radioactive, but it was loaded with phosphorus and nitrogen -- nutrients that can trigger...

Piney Point Phosphate Plant: A Hundred Million Dollars Later

Mon, 23 Feb 2026 00:00:00 GMT

Florida lawmakers secured $100 million to permanently close Piney Point and clean up the site. In August 2021, the Florida Department of Environmental Protection sued HRK Holdings for failure to operate the site safely. Officials stated that once the crisis was resolved, the rese...