The Department is adopting the federal Stage 2 Disinfectants and Disinfection Byproducts Rule (Stage 2 D/DBPR) that is incorporated in the federal regulations in the July 1, 2009, edition of 40 CFR 141. There were errors in the notice that was published in the Florida Administrative Weekly on March 12, 2009, in the three tables incorporated into the two above-listed rules. These two rules are being withdrawn and that notice is published concurrent with this notice. The remaining rules that were noticed on March 12, 2009, are part of the Department’s adoption of the federal Stage 2 Disinfectants and Disinfection Byproducts Rule. Specifically, Rule 62-550.310, F.A.C., is being amended to expand the applicability of the chlorine and chloramine maximum residual disinfectant levels (MRDLs) in accordance with the Stage 2 D/DBPR; to clarify that the Stage 1 D/DBPR MCLs for total trihalomethanes (TTHM) and haloacetic acids five (HAA5) apply until the date specified for compliance with the Stage 2 D/DBPR MCLs for TTHM and HAA5; and to specify the Stage 2 D/DBPR MCLs for TTHM and HAA5, the water systems to which these MCLs apply, and the effective dates for these MCLs. Rule 62-550.500, F.A.C., is being amended to clarify that the monitoring and compliance measurement requirements in the Stage 2 D/DBPR take precedence over the general monitoring and compliance measurement requirements in Rule 62-550.500, F.A.C.