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Common uranium-bearing, high radon potential rock types in North Carolina include metamorphosed rocks with granitic composition, graphitic schists, and generally well-fractured rocks (which create pathways for radon to easily flow).
Uranium is in geological formations throughout North Carolina. When homes or other buildings are built on top of these geological formations, radon is pulled into the home and can concentrate to dangerous levels. Exposure to radon gas has been found to cause lung cancer.
16 maj 2022 · Data provided by the Center for Disease Control and Prevention indicated that 77 of the 100 counties in North Carolina have radon indoor air levels above action level of 4 picocuries per liter (pCi/L). An estimated 21,000 people nationally die each year from radon-induced lung cancer.
radon concentration, generally: • Granites; • Some phosphorites (sedimentary rocks); • Also, some volcanic rocks, with mainly quartz (felsic - ex. Rhyolite) & some dark shales; • Metamorphic rocks derived from the above. Geologic Sources of Radon: Medium cooling speed, medium crystal size Slow cooling speed, large crystal grow
Radon gas decays into radioactive particles that can get trapped in your lungs when you breathe. As they break down further, these particles release small bursts of energy. This can damage lung tissue and lead to lung cancer over the course of your lifetime.
The North Carolina Radon Program’s primary objective is to reduce the number of radon-induced lung cancer deaths in the state. The NC Radon Program works with partners to help educate citizens about radon risks, the importance of testing, and radon mitigation when warranted.
Currently, survey data has been compiled from 1,102 schools, with 23,448 classrooms tested in 94 counties (at least one school per county) out of 100 counties in North Carolina. Based on NCRP analysis, approximately 11% of these tested classrooms had radon concentrations greater than 4 pCi/l.
