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§ 4.1 — Oregon

Radon mitigation in Oregon

This page lists 17 people and firms with a current radon mitigation credential whose official record names Oregon. 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 lists when the official file says they hold both. The list is ordered by the city or county on each record. That place is where the record is filed, not a promise about where the person works.

17 listings. Type to narrow the list.

  1. Jacob E Hardin

    Oregon Healthy Homes Llc

    current NRPP № 113395

    mitigation, Aloha

    (971) 570-9097October 12, 2026cite ↗

  2. Richard A. Cason

    Alpha Environmental Services, Inc.

    current NRPP № 103187

    mitigation, Beaverton

    (503) 292-5346October 13, 2026cite ↗

  3. Steven M Beatty

    Speedy Inspections Llc

    current NRPP № 114176

    mitigation, Clackamas

    (503) 882-2104October 13, 2026cite ↗

  4. Devlin Rc McAllister

    Environmental Works Llc

    current NRPP № 114696

    mitigation, Fairview

    (503) 676-7812October 13, 2026cite ↗

  5. Lawrence Belland

    Just Radon

    current NRSB № RRS-20G006

    mitigation, Lake Oswego

    September 30, 2026cite ↗

  6. Lawrence Belland

    Just Radon

    current NRPP № 110989

    mitigation, Lake Oswego

    (503) 740-7737October 3, 2026cite ↗

  7. Wade Gervais

    Cascade Radon, Inc.

    current NRPP № 106773

    mitigation, Molalla

    (503) 964-0818October 13, 2026cite ↗

  8. Dan Sajko

    Evren Northwest

    current NRPP № 111760

    mitigation, Portland

    (503) 452-5561October 3, 2026cite ↗

  9. Lynn D. Green

    Evren Northwest, Inc.

    current NRPP № 108739

    mitigation, Portland

    (503) 452-5561October 13, 2026cite ↗

  10. Mark Harding

    Environmental Works, Inc.

    current NRPP № 107077

    mitigation, Portland

    (503) 719-6715October 13, 2026cite ↗

  11. Mark Norbury

    Xavier Environmental, Inc.

    current NRPP № 110577

    mitigation, Portland

    (503) 236-3796October 13, 2026cite ↗

  12. Michael Stipan

    Absolute Environmental

    current NRPP № 110551

    mitigation, Portland

    (503) 878-9828October 3, 2026cite ↗

  13. Neal Correy

    Soil Solutions Environmental Services

    current NRPP № 106437

    mitigation, Portland

    (503) 234-2118October 13, 2026cite ↗

  14. Eric C Holm

    Justradon

    current NRPP № 109480

    mitigation, Saint Helens

    (503) 987-8776October 3, 2026cite ↗

  15. Duane West

    3r's Construction And Remodeling

    current NRPP № 109215

    mitigation, Salem

    (503) 363-1059October 3, 2026cite ↗

  16. Joshua McPherson

    Radon Testing & Mitigation Pnw Llc

    current NRPP № 115586

    mitigation, Sandy

    (503) 902-4212October 13, 2026cite ↗

  17. Timothy P Schmitt

    Cascade Radon, Inc.

    current NRPP № 115599

    mitigation, Sandy

    +15038941409October 13, 2026cite ↗
Fig. 4 — 17 of 17 listings have a mappable place. 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 Oregon?

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

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