She went out on her own with One Stop Environmental in 1999. In 2002 the company became the primary environmental contractor for U.S. Steel's Fairfield Works. It has also been contracted through several entities for assistance in clean-up and recovery from damage caused by Hurricane Katrina in 2005.
- Williams, Roy L. (December 16, 2007) "With a." [sic] The Birmingham News
- Williams, Roy L. (December 1, 2007) "Owner of environmental cleanup firm named entrepreneur of the year by the Birmingham Chamber of Commerce." The Birmingham News
- One Stop Environmental website