Ryan Dahlvang » Business Partners Go back to directory. Ryan Dahlvang Radon Solutions 1025 Adams St Mankato MN 56001 work Work Phone: 507-381-0862work Work Email: ryandahlvang@breatheeasymankato.comINTERNET Website: http://www.radonsolutionsmankato.com/ Categories: Affiliates, Radon Measurements & Mitigation Services Updated 4 years ago.