The Rocky Mountain Chapter of the American Association of Radon Scientists and Technologists (AARST) is dedicated to serving the educational and business needs of all our radon professionals and to saving lives by protecting the public through the promotion of radon awareness and radon testing and mitigation by qualified professionals. We are committed to supporting the AARST Mission.


AARST is a nonprofit, professional organization of members who are dedicated to the 

highest standard of excellence and ethical performance of radon measurement, 

radon mitigation and transfer of radon information for the benefit of members, 

consumers and the public at large.


Terry Kerwin- Reliant Radon Solutions

Terry Kerwin is the owner of Reliant Radon Solutions, LLC which serves the Colorado Front Range. With a background in finance and management, and 20+ years of helping run and grow a successful family plumbing business, she takes pride in running a woman owned small business. She leads her company with passion and purpose to make a difference. Lung cancer prevention and education are of the utmost importance and has led her to becoming one of the founding members of WAR (Women Against Radon; a Campaign for CanSAR), participating in community awareness programs with Lungs4Life, and the ALA Lung Force Walk. She also works closely with the Aurora CO Grant Program and the State LIRMA Program to bring radon systems to homeowners, at no cost, to qualifying participates at lower income levels. An avid member of the board of National AARST, she continues to attend the International Symposiums, Region 8 conferences, and participates in advanced classes on radon measurement and mitigation. Terry is focused on saving lives, not just turning a dollar and is validated with excellent customer service and committed to doing things the correct way. 

Vice President

Don Walker – Air Care of Utah

Don Walker is owner and manager of Air Care of Utah and National Restoration which has been in business since 1985. Certified inradon measurement, mitigation, RRNC, Multifamily, and certified as a Building Analyst by (BPI) Building Performance Insitute. Just to keep some variety in his life he currently holds licenses as a real estate salesmen, general contractor, and insurance adjuster. He has a passion for small business and knows firsthand what it takes to overcome the many obstacles on the road to profitability. His education is from BYU and has been involved with many civic and church responsibilities in the past. He enjoys his weekends spending time at his mountain cabin with some of his 6 children and 16 grandchildren.


Aaron Trapp - Spruce Environmental Technologies

Born and raised in Colorado, I Graduated from Metro State University and have been working in Marketing and Sales for the past 7 years. I began working with Spruce in May 2017 and I have enjoyed many of the relationships I have formed, and the industry as a whole. I welcome the opportunity to work with the board to ensure the success and stability of Rocky Mountain AARST now and into the future.


Russell La Plante - Perspective Property Inspections 

Co-owner/Inspector of Perspective Property Inspections has been in business for over 10 years performing residential and commercial property inspections along with radon testing.  We also perform sewer main line camera inspection.  

AARST / Rocky Mountain AARST Member since 2018, InterNACHI and NRPP S&A certification. US Air Force Veteran, Aim High! 

The American Association of Radon Scientists and Technologists is a 501(c)6 non-profit organization. 

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