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§ 4.1 — Louisville, KY

Radon mitigation in Louisville, KY

This page lists 20 people and firms with a current radon mitigation credential whose official record names Louisville, KY. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was October 13, 2026; other records may have been checked earlier. Source: the official file linked on each listing. Verify the number before you hire.

Latest credential check October 13, 2026. Methodology Individual record dates may be earlier. NRPP. NRSB.

Radon testingRadon mitigation

Testing listings are people credentialed to measure radon. Mitigation listings are people credentialed to install a reduction system. Some people appear on both pages when the official file says they hold both.

  1. Brad Lehmann

    Radon Masters Of Louisville

    current NRSB № RRS-22G001

    mitigation

    September 30, 2026cite ↗

  2. Chase Cline

    Protect Environmental, Llc

    current NRPP № 113452

    mitigation

    (502) 410-5000October 3, 2026cite ↗

  3. Christopher Heckle

    Protect Environmental, Llc

    current NRPP № 110166

    mitigation

    (502) 410-5000October 3, 2026cite ↗

  4. Darrin McMasters

    Swat Environmental

    current NRPP № 115990

    mitigation

    (920) 740-3041October 13, 2026cite ↗

  5. David M Aldridge

    Guardianpro Environmental

    current NRPP № 115487

    mitigation

    (502) 418-9407October 13, 2026cite ↗

  6. Dennis Brewer

    Ipm Services

    current NRPP № 105053

    mitigation

    (502) 456-4416October 13, 2026cite ↗

  7. Doug S. Webster

    Protect Environmental, Llc

    current NRPP № 109536

    mitigation

    October 3, 2026cite ↗

  8. Eric A Thompson

    Lungera

    current NRPP № 114558

    mitigation

    (502) 498-4713October 3, 2026cite ↗

  9. Greg J. Lauer

    Protect Environmental, Llc

    current NRPP № 109535

    mitigation

    (502) 410-5000October 3, 2026cite ↗

  10. Gregory Turner

    Protect Environmental, Llc

    current NRPP № 111844

    mitigation

    (502) 410-5000October 3, 2026cite ↗

  11. Isaac C Bowling

    Lung Radon Llc

    current NRPP № 114943

    mitigation

    (502) 963-2385October 13, 2026cite ↗

  12. Jeff Sims

    Jeff Sims

    current NRPP № 105658

    mitigation

    October 13, 2026cite ↗

  13. Leia Staples

    Cmec Llc

    current NRPP № 114928

    mitigation

    (502) 287-2640October 13, 2026cite ↗

  14. Matthew R Sedia

    Protect Environmental, Llc

    current NRPP № 112649

    mitigation

    October 3, 2026cite ↗

  15. Michael Cody Ray

    Protect Environmental

    current NRPP № 115402

    mitigation

    (502) 410-5000October 13, 2026cite ↗

  16. Rob Carpenter

    Protect Environmental

    current NRPP № 113553

    mitigation

    (502) 649-6870October 13, 2026cite ↗

  17. Sam Classen

    Protect Environmental

    current NRPP № 114583

    mitigation

    (502) 410-5000October 13, 2026cite ↗

  18. Timothy Narrow

    Swat Environmental

    current NRPP № 114666

    mitigation

    (262) 754-2211October 13, 2026cite ↗

  19. Travis Fowler

    Protect Environmental, Llc

    current NRPP № 115232

    mitigation

    (502) 410-5000October 3, 2026cite ↗

  20. Vance F. Walker, Jr.

    Radon Management Of Ky Inc

    current NRPP № 100498

    mitigation

    (502) 649-1900October 13, 2026cite ↗
Fig. 4 — Each pin is a current listing at the Census city or county centroid on the file, approximate. Pins that share a place are spread so you can click them. Not street addresses.

Appendix A

Questions before you hire

How do I verify a radon credential listed for Louisville, KY?

Open the source link on this page and match the name and credential number to the official file. Status can change after a record’s verification date. The latest record check on this page was October 13, 2026; check each record’s date. If the official page disagrees with this directory, trust the official page. We do not invent credential numbers.

Does EPA certify radon contractors?

The U.S. EPA does not certify radon contractors. EPA publishes guidance on finding a qualified radon service provider and points to state programs and national certifications. This directory is not affiliated with EPA. We do not display EPA-certified badges.

What does last verified mean on this page?

Last verified on an individual record is the date we checked its official source. The latest credential check on this page was October 13, 2026; other records may have earlier dates. We refresh the roster monthly. Current means the person appeared as currently credentialed on the source at that record’s verification date. Credentials can expire between refreshes, so follow the source link.

Appendix A.2

Before you hire

  1. Ask who holds the credential printed on this page, and ask them to show the same number. Some firms employ several credentialed people. The listing is the person or firm on the official file, not whoever answers the phone.
  2. Ask what test method or mitigation system they will use for this building. A credential is not a work plan. Testing and mitigation are separate services here, and a person appears on both lists only when the official file says they hold both.
  3. Ask how they will document test results or the finished mitigation system. Keep that document with the credential number you verified. This directory does not score jobs, publish reviews, or collect quotes.

The full checklist: How to choose a radon mitigation company: 6 checks before you sign

§ 4.3

Nearby places in Kentucky

Kentucky 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 state license in Kentucky. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.