§ 4.1 — Crown Point, IN

Radon testing in Crown Point, IN

This page lists 9 people and firms with a current radon testing credential whose official record names Crown Point, IN. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was October 14, 2026; other records may have been checked earlier. Source: IN IPLA. Verify the number before you hire.

Latest credential check October 14, 2026. Methodology Individual record dates may be earlier. IN IPLA.

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.

Brett L Dull
current IN IPLA № RTP01051
testing
October 14, 2026cite ↗
Colt Contreras
current IN IPLA № RTP01186
testing
October 14, 2026cite ↗
David A. Biasi
current IN IPLA № RTP00933
testing
October 14, 2026cite ↗
James J Green
current IN IPLA № RTP01470
testing
October 14, 2026cite ↗
Mark Stephen Henricy
current IN IPLA № RTP00988
testing
October 14, 2026cite ↗
Natalie Sylvie
current IN IPLA № RTP00907
testing
October 14, 2026cite ↗
Quinton M Flora
current IN IPLA № RTS01253
testing
October 14, 2026cite ↗
Scott Abraham
current IN IPLA № RTP01192
testing
October 14, 2026cite ↗
Timothy M. James
current IN IPLA № RTP00747
testing
October 14, 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 Crown Point, IN?

Open the source link on this page and match the name and credential number to IN IPLA. Status can change after a record’s verification date. The latest record check on this page was October 14, 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 14, 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

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.
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.
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: Certified radon tester: what they do and how to hire one

§ 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.