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Institute for Environmental AssessmentLicensed

Licensed radon professional based in Marshall, Lyon County, MN

Contact on the state list	John Schaefer
License number	RMEA-00089
License type	Radon Measurement Professional
License status	Active, MDH licensed
Based in	Marshall, Lyon County, Minnesota 56258
Work types on the roster	Single Family Measurement; Multi Family Measurement; Schools & Large Buildings Measurement

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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 #RMEA-00089 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Checked against MDH radon license search, last checked 2026-11-02. See the issuing agency.

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