FILE - Tyler Abayare catches a red horse carp on the Mississippi River at the Montissippi County Park downriver from the Xcel Energy nuclear power plant in Monticello, Minn., March 24, 2023. Xcel Energy, the energy company responsible for leaking radioactive material from its nuclear plant in Monticello, in recent months has announced that it will build an underground metal barrier to keep affected groundwater away from the nearby Mississippi River.
Xcel discovered in November that about 400,000 gallons of water containing tritium — a radioactive isotope of hydrogen — had leaked from a faulty pipe. The utility made a temporary fix but learned in March that hundreds more gallons of tritium-laced water had leaked, leading to a dayslong shutdown to fix the pipe.
“We will continue recovering impacted groundwater until our monitoring wells indicate the groundwater meets the EPA’s Safe Drinking Water Act standards,” the company's website said.
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