Milwaukee & Madison Area



North Eastern Wisconsin Area


[email protected]

Meet Our Team

Meet Our Team

David Daniels

David is the owner of Radon Specialists of WI. He started the business in July of 2000. Married to Lucy with five children, 3 of which are still at home. David sits on the AARST board of directors as the Vice President and has taught classes on how to start and run a Radon business at national symposiums. David has also consulted other Radon companies in many parts of the country on testing and mitigation techniques. He served in the Air Force from 1987 to 1991, holds two degrees in Financial Management and Applied Technology. Loves to travel, eat good food, watch movies, play games, sports and lift weights in our gym at the Fox Valley location. 



Pat Lewis

Pat is a retired Lieutenant in the Appleton Fire Department. He is a part time pilot for FedEx.  Pat’s wife’s name is Christy and they have four children. Pat has been working for us part-time since October of 2001. He was also in the Air Force as a pilot.Pat has a very outgoing personality and cares about his work. He is trained in how to install systems and certified by NEHA to conduct Radon tests. He is also my neighbor so I rely on him quite a bit when I am too busy for testing and estimates.




Nick Marks

Nick’s background in construction is helping him to fit right in with the rest of our team. He started working for us in May 2009 and is now managing our Fox Valley office. Nick grew up building fireplaces in his father’s business. He graduated in 2005, and is Married to Courtney, our Neenah office manager. They recently had their first child, a little girl named Tenley. He owns his own home in Appleton.Nick enjoys the simpler pleasures of life: Going on long walks,  4 wheeler rides, Jet Skies, long walks on the beach, donating to charities he cares about, and he loves kids and animals.





Ben Daniels

Ben is 22 and a certified installer at our Milwaukee location. Close to 2000 systems in. Single, lives in Browndeer with Brandon and Jared. Loves working on computers, gaming and reading. Single and waiting for the right one. 









Brandon Wittmann

Brandon is our manager for the Milwaukee office and lives with Ben and Jared. He is certified and takes great pride in his work. Single and looking.


Jared Richter

Jared works out of our Milwaukee office, is now certified and lives with Brandon and Ben. He is single. Loves sports and the outdoors. Jared does a great job installing and very helpful and friendly. (as all our installers are). 


Jason Loyd

Certified installer for our Fox Valley office. Over 1,000 systems under his belt.  Jason has a daughter and son and lives in Neenah. Loves the UP, snow boarding, outdoors. A big Lion’s fan, but we won’t hold that against him.


 Courtney Marks


Courtney is our office manager for the Fox Valley location. She is married to Nick our manager. Proficient in organization and scheduling work. Likes to shop, travel, spend time with family and friends. She just had their first child Tenley.

Alisha Wittmann

Alisha is our Milwaukee office manager. She has great organizing skills. She is single (but engaged to Dylan) and looks forward to a long career with us.





Dylan Szews

Dylan is a certified installer working out of our Neenah office. He is single (but engaged to Alisha), likes to work out and spend time outdoors. He has a strong construction background and always tries to install a perfect system. (as all our installers do) Likes to work out and spend time outdoors.








Our mascot and fierce mouse manager