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

§ 4.1 — Dauphin County, PA

Certified radon testing in Dauphin County, PA

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

Last verified August 29, 2026. Methodology PA DEP.

Certified radon testingCertified radon mitigation

  1. Ayers, Dan

    current PA DEP № 3385

    testing

    (717) 429-0378August 29, 2026cite ↗

  2. Biechler, Michael

    current PA DEP № 2102

    testing

    (717) 364-0060August 29, 2026cite ↗

  3. Durborow, Brent

    Enviroquest, Inc

    current PA DEP № 9068

    testing

    (717) 233-6144August 29, 2026cite ↗

  4. Enviroquest Inc

    current PA DEP № 1725

    mitigation, testing

    (717) 233-6144August 29, 2026cite ↗

  5. Matteson, Chris

    current PA DEP № 2337

    testing

    (717) 583-2914August 29, 2026cite ↗

  6. Radon, Joseph

    current PA DEP № 1234

    mitigation, testing

    (717) 425-5365August 29, 2026cite ↗

  7. Sipe, Steven

    current PA DEP № 3287

    mitigation, testing

    (717) 425-0989August 29, 2026cite ↗

  8. Staz Iii, John

    Enviroquest Inc

    current PA DEP № 1512

    mitigation, testing

    (717) 233-6144August 29, 2026cite ↗

  9. Wentz, Brian

    current PA DEP № 2829

    testing

    (717) 540-5970August 29, 2026cite ↗
Fig. 4 — Dauphin County, PA, approximate. Pin is the county 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 Pennsylvania

Pennsylvania DEP certifies individuals and firms that test or mitigate radon. The people below appear as currently certified on the DEP Radon Services Directory we imported. Read the methodology. Credential status can change.