Listed for: Testing
Verified:Ohio state license
Call 1st Inspection Services at (937) 684-9544No website listed
ProfessionalsBusiness profile
Black River Radon, LLC
Sullivan, Ohio. Mitigation
2 Ohio state licenses verified against the Ohio Department of Health, Radon Education and Licensing Program list, last checked November 3, 2026.
Credentials
Licenses and certifications
2 credentials are on file for this business, each exactly as the issuer's list printed it.
Ohio state licenses (2)
Issued by the Ohio Department of Health, Radon Education and Licensing Program, not by NRPP or NRSB. Radon411 last checked the list on November 3, 2026.
| License | Number | Status on the list | Expires | Verified | Check with the issuer |
|---|---|---|---|---|---|
| Mitigation license | No. RC291 | Ohio licensed radon mitigation contractor | Expires July 24, 2028 | Verified November 3, 2026 | Verify RC291 with the Ohio Department of Health, Radon Education and Licensing Program (opens in a new tab) |
| Mitigation license | No. RS456 | Ohio licensed radon mitigation specialist | Expires July 24, 2028 | Verified November 3, 2026 | Verify RS456 with the Ohio Department of Health, Radon Education and Licensing Program (opens in a new tab) |
Licensing in Ohio
Ohio's radon program says the state licenses or certifies radon professionals.
Radon Education and Licensing Program, Ohio Department of Health, 614-728-0272.
What Ohio requires, in its program’s own words, and how to check a credential
Radon figures
Radon in Ohio
CDC publishes radon testing by county, and Sullivan is not a place its county figures resolve to, so the figures here are Ohio's: pooled across 88 counties, 52.3% of the 98,840 radon tests reported to CDC, 2008 to 2017, laboratory, were at or above 4 pCi/L; 79 counties have 30 or more tests for that period.
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