active sub-slab depressurization in Union Township usually starts with a number somebody was not expecting.
When this is the right question
- Cracks and utility penetrations through a slab you can see daylight around
- A sale is under contract and the buyer's radon result triggered a repair request
- A finished basement that is used as living space and has never been tested
Why this comes up in Union Township
Here is what makes Union Township particular: much of the township sits outside a public supply. Where a well serves an address, it draws from whichever of the township's three bedrock settings that lot happens to sit on.
Union Township — the state's own numbers
14% of the 2,584 test results NJDEP holds for Union Township were at or above the 4.0 pCi/L action level — 364 of them. That puts it in Tier 2 — moderate potential.
Older farmhouses along the original roads with substantial single-family development from the 1980s onward on large lots.
Practicalities in Union Township
Open rural lots with good access on the newer properties; older farmsteads can be tighter and more built-around.
Any permit for this runs through Union Township. NJDEP radon certification has to be current before a business receives anything from us.
The usual approach
The standard fix. A suction point is cut through the slab, pipe is run up through the house or along an exterior wall, and an in-line fan mounted outside conditioned space pulls soil gas from under the floor and discharges it above the roofline. Sizing follows a diagnostic reading of how permeable the fill under the slab actually is, not the square footage of the house.
Typical cost in Hunterdon County, NJ
$1,200 – $2,600 — typical range, not a quote. What your building needs can only be settled by a certified business that measures it on site.
A crew that works Union Township regularly will have met this pattern before.
Who is allowed to do this in New Jersey
Under N.J.A.C. 7:28-27 this is not work a general contractor may take on. It requires a business certified by NJDEP for radon mitigation, with a certified mitigation specialist directing the work. We verify that on the state register, note the date, and route accordingly — but a verified certification is a fact, not a recommendation.
Never tested, and wondering whether to?
Send us the reading and your town. We'll pass it to certified local crews and get out of the way. Free, and you're not committing to anything.
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What tends to travel with this
Other work in Union Township
Same ground, different question.
Active sub-slab depressurization nearby
Neighbouring towns on the same ground.