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Mark DoumaLicensed

Licensed radon professional based in Manhattan, Will County, IL

Company	Summit Ridge Inspection Group, LLC
License number	RNI2019211
License type	Radon Measurement Professional
License status	Active, IEMA-OHS licensed
Based in	Manhattan, Will County, Illinois

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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 #RNI2019211 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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