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

§ 4.1 — Bessemer, AL

Certified radon mitigation in Bessemer, AL

2 current listings from the official file. Verify the credential number before you hire.

Last verified August 29, 2026. Methodology NRPP. NRSB.

Certified radon testingCertified radon mitigation

  1. Joseph D. Tropeano

    Cardinalbama Llc

    current NRPP № 109950

    mitigation, testing

    (205) 230-1210August 29, 2026cite ↗

  2. Nathaniel M Smith

    Cardinalbama

    current NRPP № 114260

    mitigation

    (205) 230-1210August 29, 2026cite ↗
Fig. 4 — Bessemer, AL, 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?

Alabama pages here use current NRPP or NRSB certifications. City pages use the city printed on that record, not a ZIP-radius search. A national certification is not a Alabama license. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.