Radon Testing in Lewis Center, OH

Radon Testing in Lewis Center involves short-term (2-7 day) charcoal canister or continuous radon monitor placement on the lowest occupied level, working on the lowest lived-in level of the home where occupants spend more than 4 hours per day. The service is the first step for any home that has not been tested in the last 2 years, for any home being sold, and for any home after a significant foundation, basement, or HVAC modification.

Lewis Center's stock is almost entirely post-1995 subdivision construction along the US 23 corridor, built to the radon-resistant new construction code with a passive vent stack run to the roof. Activating that stack with a fan is the typical fix here rather than a ground-up sub-slab system. The glacial till under Delaware County's EPA Zone 1 designation means the passive stack alone is frequently not enough on its own. Lewis Center sits along the Olentangy River corridor that has driven the US 23 growth strip north from Columbus, on the flat glacial till plain typical of Delaware County. Lewis Center sits on geology that drives elevated regional radon exposure across the Columbus metro, including Delaware County.

Delaware County testing behaves consistently across EPA Zone 1 regardless of which half of the county a house sits in, though the older limestone-and-block downtown stock near Ohio Wesleyan warrants closer attention to sealing gaps around the foundation during the closed-house window than the newer sump-equipped construction along US 23.

ANSI/AARST MAH-2023 establishes the residential measurement protocol. Closed-house conditions must be maintained throughout short-term testing. The Ohio Department of Health Radon Licensing Program oversees radon program compliance for Lewis Center, and Ohio licensure under ORC 3723.02 applies to any contractor performing mitigation work in the state.