GroundRosterRiver City Measurements LLCLicensed
| Company | James Ritchey, Jennifer Ritchey |
| License number | RS622 / RC388 / RS621 |
| License type | Radon Mitigation Contractor and Specialist |
| License status | Active, Ohio ODH licensed |
| License expires | September 21, 2028 |
| Based in | Marietta, Washington County, Ohio 45750 |
"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.
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 #RS622 / RC388 / RS621 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.
Checked against ODH radon licensure data, last checked 2026-11-02. See the issuing agency.
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