Lebanon Township radon testing and mitigation

Part of Lebanon Township, Lebanon Township is the northern corner of Hunterdon County, spread across the Musconetcong and Schooley's Mountain ridges.

Housing stock. Rural and semi-rural, from 18th and 19th century stone farmhouses to 1970s-onward houses built on cut-and-fill lots carved into the hillsides. Full basements are common because the ground had to be excavated anyway.

Water supply. Public supply reaches very little of this township. Where an address is on a private well, that well draws from the same fractured Precambrian gneiss and granite that produces the soil gas — so the water is a second question, not the same one.

The ground under Lebanon Township

Lebanon Township sits squarely on the Reading Prong — the belt of Precambrian granite and gneiss that runs out of Pennsylvania across northwestern New Jersey and produces some of the highest indoor radon readings in the United States. Two things follow from that. First, houses here are frequently built into rock rather than onto soil, so the fill under a slab is often shallow and coarse, which changes how far a single suction point can reach and makes diagnostic testing worth doing rather than assuming. Second, the same fractured bedrock supplies the wells, so a Lebanon Township house can have two separate radon routes running at once: soil gas entering through the basement floor and dissolved radon coming out of solution at every shower and tap. A soil-gas system that gets the number most of the way down and then stalls is a common pattern here, and water is often the reason.

Read that as the character of the ground rather than a claim about any one lot — geological boundaries cut across town lines, and the NJ Geological Survey's bedrock mapping is what settles which formation a given address sits on.

Around Lebanon Township. The requests come from the Woodglen and New Hampton crossroads; the Route 513 corridor toward Califon; the Musconetcong River valley along the Warren County line; the Schooley's Mountain and Point Mountain ridges; the Voorhees State Park and Hoffman Park edges.

Working here

Long driveways, sloping lots and plenty of room around most houses, so exterior pipe routing is usually straightforward.

What moves the cost here

Sloping, generous lots usually mean pipe can run outside the house without cutting through finished space, which tends to keep an install toward the lower end. What pushes cost up in this township is the second system: where testing shows waterborne radon as well, the well-side treatment is a separate job with its own equipment, and no air system substitutes for it.

Lebanon Township covers more of the Reading Prong than almost any other municipality in Hunterdon, which is why houses only a few miles apart on the same ridge can return readings several times the action level with no visible difference between them.

Because a bedrock well here draws from the same uranium-bearing rock that supplies the soil gas, this is one of the few parts of the county where a mitigation quote should routinely include the question of what is in the water as well as what is under the floor.

Permits and paperwork

Construction permits run through the Lebanon Township construction office. Because homes here are on private wells, any water-side treatment also brings the well and the household plumbing into the picture, and New Jersey's Private Well Testing Act already requires gross alpha screening on Hunterdon County wells at the point of sale.

Because postal addresses and municipal boundaries diverge across this county — and because construction-code services are sometimes shared between towns — the first thing to establish is which office actually has jurisdiction.