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From PDHengineer. com-Decatur Professional Development, LLC
Reduction of Radon Levels in Schools and Other Large Buildings
...other large buildings in radon-prone areas: Install an active soil depressurization (ASD) system. Pressurize the building using the heating, ventilating, and air conditioning (HVAC) system. Seal major radon entry routes. Specific guidelines on how to incorporate these radon prevention features in the design and construction of schools and other large buildings are detailed in this
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