Arkansas Department of Health accepts InterrNACHI's free radon course.

General Inspection Topics Legislation, Licensing, Ethics & Legal Issues
1

Here is the free, approved, online radon course: http://www.nachi.org/radon-measurement-service-provider-online-course.htm

2

Arkansas also approved InterNACHI’s free, online inspection courses for continuing education of home inspectors: http://www.nachi.org/arkansasapproval2008.htm