The Indoor Environments Association, formerly known as AARST, addresses radon, vapor intrusion, and other contaminants of concern in the built environment.
Volume 33 • No. 26 • February 2026
News and Events for the Radon and Vapor Intrusion Industry
Table of Contents
*New!* ITRC Resource: VI Toolkit
Save the Date! 2026 Indoor Environments Symposium
Call for 2026 Symposium Speaker / Presentation Proposals
Become a 2026 Symposium Sponsor / Exhibitor
Thank you to our 2025 Sponsors & Exhibitors!
Last Year’s Symposium Speaker Slides Available
Radon Reporter: Read the Latest Issue!
New ITRC Resource: 2026 Vapor Intrusion Toolkit
ITRC has released a new Vapor Intrusion Toolkit, a resource that provides a comprehensive overview of vapor intrusion concepts, recommended practices, and decision-making approaches across a wide range of site conditions.
The Toolkit replaces, combines, and updates three previous ITRC vapor intrusion guidance documents (VI-1, PVI-1, and VIM-1). It reflects advances in science, policy, and field experience, and is designed to support regulators, practitioners, and stakeholders in conducting consistent and effective vapor intrusion assessments.
The toolkit includes the Vapor Intrusion Technical and Regulatory Guidance and a suite of fact sheets, technology information sheets, and checklists, all of which are individually available for download and use. Also provided is a series of YouTube Playlists featuring ITRC-produced videos and content from other organizations. Key topic areas addressed in the toolkit include:
- Vapor intrusion fundamentals and conceptual site models
- Site screening and investigation strategies
- Sampling and analysis
- Data evaluation and risk assessment
- Modeling
- Vapor intrusion mitigation
- Community engagement
View the toolkit HERE
Want to Showcase Your Business at This Year’s Symposium?
Learn more about how you can place your brand front and center at the 2026 Indoor Environments Radon & Vapor Intrusion Symposium in Norfolk, Virginia!
CLICK HERE to see the 2026 Exhibitor and Sponsor Prospectus
Industry Events Calendar
Welcome to the Newest
NRPP-Certified Professionals!
Alexis a Mann (MI), Andrew Mason (IA), Austin C Conrad (UT), Ben E Romanowski (TN), Benjamin C Weakland (IL), Benjamin L Daniels (WI), Benjamin Whetzel (VA), Brandon Beachy (TN), Brandon D Chambers (MI), Bryan E Bostick (MT), Chaminda Jayatilake (MD), Christopher Haroldson (ND), Christopher Smith (MI), Conner Polymeros (MA), Daniel Raddant (WI), David Daniels (WI), Donald Hamby (CO), Eric J Kelley (CO), Gianna M Sandull (NJ), Gregory N Shanin (IL), Hyrum M Morley (UT), Ian J White (MT), Jason Guardado (IL), Jeffrey J Tinaglia (VA), Jeffrey M Squire (MT), Joan O’Neill (CA), Justin Yarrington (MI), Larry E Carter (MO), Luis Fernando Ruiz (CA), Melissa Horne (OH), Michael J Beydler (VA), Nathan A Vail (PA), Nathaniel W Alper (MD), Norman Lane (NJ), Patrick J Gleason (NY), Samantha J Hamilton (CO), Sebastian T Tumbale (CA), Thomas Wilkins (PA), Tim Rushford (MN), Timothy M O’Neal (WV), Whitney S Lippert (CO), Zachary P Butler (TN), Zain J.H. Miller (CO), Zarah Thanasides (NJ)
Welcome to the Newest
Members of the
Indoor Environments Association!
Alexander Luette (OK), Alexander Swalley III (CO), Benjamin Portin (IL), Brandon Queen (NC), Christopher J Nava (IL), Daniel Matz (SC), Donald Thompson II (WV), Jason Walker (ID), Jim Klun (IL), Julia Espinal (NH), Khuram Saeed (FL), Marc Gabriel (NC), Saul Bobtail Bear (CO), Shaun W. West (OK), Todd Gourley (CO), Van Hall (TN), Wilfred Lambert
Help NRPP Write Exam Questions!
If you are interested in writing questions for NRPP’s new examinations, please complete this form and you will be contacted when we begin. Questions are needed for the following certification exams:
- Single family radon measurement
- Single family radon mitigation
- Commercial radon measurement
- Commercial radon mitigation
- Vapor intrusion mitigation
Read the Latest Issue!
Indoor Environments Association is a nonprofit, professional organization of members who are dedicated to the highest standard of excellence and ethical performance of hazard identification and abatement of radon, chemical vapor intrusion, and other contaminants of concern in the built environment. The organization primarily strives to advance the interests of its members through developing industry standards, certifying technical proficiency, enabling advancement of public policy, and communicating health risks to the public.
Editorial Content Wanted: Indoor Environments Association (AARST) publishes content over two platforms. We are interested in radon and vapor intrusion interest stories, technical papers, business topics, health advancements/detection regarding radon-related issues, and more. Please submit content for consideration to editor@aarst.org.
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