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Michael SerioLicensed

Licensed radon professional based in Chicago, Cook County, IL

Company	Gallagher Bassett Services, Inc, WCD Group Division
License number	RNI2013251
License type	Radon Measurement Professional
License status	Active, IEMA-OHS licensed
Based in	Chicago, Cook County, Illinois

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

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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 #RNI2013251 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.

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