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Radon Mitigation Diagnostics:

Review and Troubleshooting of ASD Systems

Radon Training at Rutgers ERRTC

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Date & Time

Next offering TBD


This one-day course is co-sponsored and funded by the Radon Division of the Pennsylvania DEP, and it is approved for 8 CE credits for Pennsylvania certified radon mitigators. The course will review the diagnostic strategies, methods and data needed to design a mitigation system and to troubleshoot systems that have failed to reduce radon levels as needed. The first 15 registrants will receive a free pitot tube.

Program Agenda

8:30 — Registration and Introduction
Why are so many mitigation systems failing?

9:15 — Review of ASD System Operation and Diagnostics
This section reviews material covered in your mitigation certification class and explain how and why an active soil depressurization (ASD) mitigation system mitigation is supposed to work.

10:15 — Building Investigation
Before you fire up a power tool, in fact before you quote a price, you should gather this core information by walking through and around the house and interviewing the resident. If a system has failed, you need to review and gather this info if you don’t have it already.

10:45 — What Information Do You Need to Design – and Troubleshoot ‐‐ a System
Before you design anything – whether it’s a space shuttle, a can opener or a mitigation system – you first must first determine what it needs to do. In a mitigation system, that means deciding how big and how strong must your pressure field be. If a system has failed, you need this information to determine why the current system doesn’t work and how to correct it.

12:00 — Lunch

12:40 — Step‐by‐Step Instructions: Performing Diagnostics and Designing the ASD System
A walk through of: selecting locations for test suction holes; visually inspecting sub‐slab material; determining locations to test Pressure Field Extension (PFE); using a shop vacuum to evaluate communication and potential for PFE.

1:40 — The 30 Minutes That Will Tell You What You Need to Know
This is the nitty gritty of system design. It takes less than 30 minutes to gather and produce the information needed to size your fan and pipes properly, so your system is strong enough to produce the required pressure field without wasting energy or money on oversized systems. Hands‐on exercise: We’ll do an in‐class timed test to demonstrate that you can gather and calculate required information in 30 minutes or less. The same procedures provide the basis for correcting deficiencies in failed systems.

3:00 — What if ASD doesn’t work?
In the 80‐20 rule, more than 80% of system failures will be related to pressure field extension problems. This introduces but does not extensively cover those other possible causes.

3:30 — Troubleshooting Problem Houses
Armed with a review of how and why ASD systems should work, you can discuss homes that have presented challenges for you.

4:30 — Adjourn

Early Registration Fee
Registration Fee

Substitutions are permitted. View cancellation policy.


Continental breakfast and lunch will be provided to you at no additional cost.

NOTE: If you have any dietary restrictions or food allergies, please alert us at least one (1) week in advance of the course start date so that we can make reasonable accommodations. We cannot guarantee accommodations for special requests made after that time.


We strongly recommend that you use the directions we provide.



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Here are 3 convenient ways to be added to our mailing list:
1. Click here to join our mailing list (please reference "Radon Mitigation Diagnostics" or Course Code EA1401CA)
2. Call us at 848-932-9271, select option 3
3. E-mail us at ocpe@njaes.rutgers.edu

Program Questions? Contact Us!

Program Coordinator: Joe Canzano, 848-932-7317
Administrative Assistant: Beth Perez, 848-932-7483