How Far Above Gutter Radon Mitigation

In fact the radon gas concentration approaches background levels at 3 4 feet from the discharge point.

How far above gutter radon mitigation.

Astm e 2121 is a us standard for reducing air born radon in homes as far as practicable below the action level of 4 picocuries per liter pci l 148 bq m 3. The under slab portion is embedded in the under slab aggregate which forms a gas permeable material through which the radon gas passes easily. Some states recommend achieving 2 0 pci l or less. When radon gas is discharged via a radon mitigation system above the roof the radon concentration falls off dramatically with distance from the point of discharge.

Also a radon system is in effect mining radon out of the ground and very high levels can occur at the discharge point. For a radon mitigation system to work with a perimeter drain system be mindful of the following details. A furnace will only be operated during the cold season whereas a radon mitigation system will operate in the summer when the windows may be open. Pipes are to located 12 above the plane of a roof not necessarily the.

Depending on the area that needs the remediation the under slab portion of this pipe is usually perforated and with a t so it can extend at least 5 feet on either side.