The Department is proposing to amend Chapter 62-780, F.A.C., which was adopted in 2005 and has not been substantially updated on a technical basis since then. In the intervening time, much has been learned with regard to applying Risk-Based Corrective Action (RBCA) principles to contaminated site management and closure. The rule chapter has been modernized to incorporate these “lessons learned” and to facilitate contaminated site closure. The rule was also revised to allow the use of new techniques and approaches. A number of inconsistencies or incongruities within the chapter have also been corrected.