Daniel SladekLicensed

Licensed radon professional based in Naperville, IL

"Based in" is the city on the business's license record. That can be a mailing address; it doesn't tell you where the business works.

Get free quotes

How to verify this license

We publish the license details exactly as they appear in the official licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #RNI2002215 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Checked against IEMA-OHS radon license index, last checked 2026-11-02. See the issuing agency.

Compare radon professionals based in Naperville

Other radon professionals based in Naperville

Radon professionals based near Naperville

This record names no county in Illinois, so these are the nearest Illinois listings in the same trade by map location. Each card shows the town the business is based in.

See every listing based in Naperville.