Radon Screening
Short-term radon screening for commercial and multifamily due diligence.
Radon screening identifies whether radon is a concern at a property. SAGE performs the screening. When numbers warrant deeper diagnostic testing, we point you to the right specialist.
Overview
What it is.
Radon screening is a short-term measurement of indoor radon concentration using passive canisters or continuous monitors. The objective is straightforward. Determine whether radon at the property is above, below, or near the EPA action level of 4.0 pCi/L.
This is screening, not diagnostic radon testing. SAGE places, retrieves, and analyzes the screening results. If numbers come back elevated and a deeper investigation is warranted, we point you toward a radon specialist set up to do that work.
At a glance
Method, threshold, turnaround, coverage.
- EPA action level
- 4.0 pCi/L
- Exposure window
- 48–96 hrs
- Bundled turnaround
- ~10 days
- States of coverage
- 4
Method: short-term passive canisters per EPA protocol. Coverage: Idaho, Northern Utah, Eastern Oregon, Western Montana.
Deliverables
What you receive.
Four artifacts, one packet. Each ties back to a specific step of the EPA short-term protocol.
Canister placement
Passive canisters set at representative locations within the building, photographed and logged.
EPA-protocol exposure
48 to 96 hour exposure window run per EPA short-term protocol. Closed-house conditions documented.
Accredited lab analysis
Canisters shipped to an accredited radon laboratory. Chain-of-custody preserved end to end.
Screening report
Results tabulated against the 4.0 pCi/L EPA action level with clear next-step recommendations.
Scope clarity
Why this is screening, not testing.
The radon field draws a hard line between snapshot screening and diagnostic testing. SAGE handles one of those tiers and refers cleanly when the numbers earn it.
SAGE handles
Screening tier
- Short-term snapshot measurement
- Pass / near-action / elevated determination
- EPA action-level comparison
- Closing-ready screening report
Referred specialist handles
Diagnostic tier
- Long-term measurement campaigns
- Multi-zone diagnostic work
- Source identification
- Mitigation system design
When to screen
Four scenarios where radon screening earns its place in the diligence packet.
Multifamily due diligence
Apartment, condo, and senior-living acquisitions where indoor air quality is part of the property’s underwriting.
Commercial occupied space
Office, retail, and institutional buildings with occupied below-grade or slab-on-grade space.
Layered with a Phase I
Add-on to the Phase I when the property is in an EPA Zone 1 or Zone 2 area, which covers most of Idaho.
Pre-renovation baseline
Owners establishing a documented radon baseline before envelope or HVAC modifications.
Need radon numbers for a closing?
Send the property and the closing window. We’ll scope a screening that fits the timeline.