In his words...

The remedy to the TVA's mishandling of the disaster requires more than a restructuring of management. If significant changes within the TVA corporate culture are to succeed, there must be recognition that even though science and technology are integral to responding to environmental disasters (which in this case seems to be the camouflage under which the TVA is hiding), research has demonstrated that the instinct to rely solely on an 'engineering fix' does not work. The TVA must recognize that the sociocultural issues within the agency and the affected communities cannot be ignored if they are to respond effectively to disasters and prevent them from happening in the future.

The TVA Ash Spill One Year Later: Lessons Learned
By GREGORY BUTTON