Water Quality Standards for the State of Florida's Lakes and Flowing Waters; Supplemental Notice of Data Availability and Request for Comment

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This action is a supplemental notice of data availability and a request for comment related to EPA's January 26, 2010, notice of proposed rulemaking (NPRM), proposing numeric nutrient water quality criteria to protect aquatic life in lakes and flowing waters within the State of Florida. In the January 2010 NPRM, EPA proposed to classify Florida's streams into four regions (referred to in the proposed rule as "Nutrient Watershed Regions") for application of total nitrogen (TN) and total phosphorus (TP) criteria. Streams within each of these regions (Panhandle, Bone Valley, Peninsula and North Central) reflect similar geographical characteristics including phosphorus-rich soils, nutrient concentrations and nutrient ratios. In this notice, EPA is requesting comment on revised stream region boundaries based on additional information about watershed delineations and phosphorus-rich geological formations in Florida. Based on comments and additional information, this revised regionalization approach would result in five Nutrient Watershed Regions for Florida's streams and a clarification of certain watershed boundaries for the Bone Valley and Peninsula regions. EPA is also requesting comm