Certified radon testers & mitigatorsEntry — verified 29 Aug 2026

Entry № RRS-GSS594

David M. Gerard

Advanced Radon Technologies

Last verified August 29, 2026. Methodology

Credential number
RRS-GSS594
Credential body
NRSB
Status
current Certified. Current in the source file.
Services
mitigation
City
Spokane
County
Not on the source file
State
Washington
Phone
Not on the source file
Source
https://nrsb.org/find-a-pro/
Fig. 5 — Spokane, WA, approximate. Pin is the city on the official file, not a street address.

§ 5.1

Places on the source file

Claim or update this listing. A claim cannot add someone who is missing from the official file.