Certified radon testers & mitigatorsColorado — mitigation — verified 29 Aug 2026

§ 4.1 — Hartsel, CO

Certified radon mitigation in Hartsel, CO

1 current listing from the official file. Verify the credential number before you hire.

Last verified August 29, 2026. Methodology CO DORA.

Certified radon testingCertified radon mitigation

  1. Winter, Katherine

    current CO DORA № RMT-194

    mitigation

    August 29, 2026cite ↗
Fig. 4 — Hartsel, CO, approximate. Pin is the city on the official file, not a street address.

Appendix A — Before you hire

  1. Who holds the credential, and can they show the same number that appears on this page?
  2. What test method or mitigation system will they use for this building?
  3. How will they document results or the finished system?

§ 4.3

Nearby places in Colorado

Colorado DORA licenses radon measurement (RME) and mitigation (RMT) professionals. The people below appear as Active on the official occupational license file we imported. Read the methodology. Credential status can change.