EPA conducted a preliminary estimate of the potential incremental compliance and state resource costs associated with EPA's proposed nutrient criteria for lakes and streams in Florida. Incremental costs associated with the proposed rule represent the costs above and beyond the costs that would be incurred for compliance with the baseline criteria. For this analysis, baseline costs represent the costs necessary for compliance with FDEP's draft water quality standard (WQS) changes (Chapter 62-302 and 62-303; July 2009), and any costs incurred to reduce nutrient loads to waters on the existing state Clean Water Act (CWA) Section 303(d) list or with an existing total maximum daily load (TMDL). The preliminary cost estimates described in Attachment no. 1 to this Report are based on criteria representative of these draft changes, and thus, represent potential baseline expenditures.