Should I connect radon vent to the airtight basin lid?
I recently installed a sump basin with an airtight lid connected to interior & exterior drain tile with the intention of using it to vent radon also.
The plumbing inspector told me that I could not vent off of the basin, and that I would have to install a vertical pipe off of the interior drain tile. (could even be directly adjacent to the sump basin)
The reasoning being that in order to service the sump pump, that the radon line would need to be disconnected to remove the cover, and this vent line may not get reconnected.
Is this good practice? Is this worth arguing with the inspector to connect it to the basin lid?
New house build in Northern IL, climate zone 5.
I saw that in another radon related question that Eric Bjornson (not sure of qualifications) said…
“It might be worth noting that we would rarely recommend using the sump pit as a suction point for sub slab depressurization if the soil drainage system (weeping tiles) terminates at the sump pit. A sub slab depressurization system is designed to create a low pressure condition under the slab. Using the sump pit as a suction point causes the low pressure field to be extended to soil surrounding the foundation often resulting in higher than desired airflow requirements meaning the need for a higher power fan and resulting energy penalties particularly in cold climates.”
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