Certified radon testers & mitigatorsIndiana — testing — verified 29 Aug 2026

§ 4.1 — Portage, IN

Certified radon testing in Portage, IN

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

Last verified August 29, 2026. Methodology IN IPLA.

Certified radon testingCertified radon mitigation

  1. Brian J. Gerike

    current IN IPLA № RTP00353

    testing

    August 29, 2026cite ↗

  2. Randall D. Sisk

    current IN IPLA № RTP00288

    testing

    August 29, 2026cite ↗
Fig. 4 — Portage, IN, 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 Indiana

Indiana licenses radon testers and mitigators. The people below appear as Active on the official IPLA license verification search we imported (primary testers, secondary testers, and mitigators). Laboratory testers are not listed here. Read the methodology. Credential status can change.