"Unacceptable" levels of radioactive isotope lead-210 were found at the Jana Elementary School in Florissant, Missouri, a report reveals.
According to the report from the Boston Chemical Data Corporation, which was published last week, the radioactive material found at the school is consistent with the radioactive legacy uranium processing wastes found in the heavily contaminated Coldwater Creek.
Coldwater Creek was contaminated by waste from developing nuclear bombs in the 1940s and 1950s.
The samples were taken on August 15 from the school's library, kitchen, classrooms, fields, and playgrounds, as well as the heating, ventilation, and air conditioning system.
"The most outstanding result of August 2022 testing at the Jana school was that levels of the radioactive isotope lead-210 found on school grounds were entirely unacceptable," the report says.
According to the report, the levels of radioactive lead in the kindergarten playground were "more than 22 times higher the expected". Researchers also found polonium and radium.
The school said in a statement that the Board of Education would consult with attorneys and experts in the area of testing to determine the next steps. The students will return to virtual lessons on Monday.
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