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

§ 4.1 — Castle Rock, CO

Certified radon mitigation in Castle Rock, CO

3 current listings 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. Kleynhans, Willem

    current CO DORA № RMT-122

    mitigation

    August 29, 2026cite ↗

  2. Martinez, Shawn, Paul

    current CO DORA № RMT-82

    mitigation

    August 29, 2026cite ↗

  3. Woodfield, Aaron, Reid

    current CO DORA № RMT-112

    mitigation

    August 29, 2026cite ↗
Fig. 4 — Castle Rock, 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.