18676882, 62-304.406 - Florida Administrative Rules, Law, Code, Register

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Notice: 18676882

Notice of Proposed Rule

Department:

DEPARTMENT OF ENVIRONMENTAL PROTECTION

Chapter:

TOTAL MAXIMUM DAILY LOADS

Overview

RULE:

62-304.406	Aucilla River Basin TMDLs
62-304.415	Lower St. Johns River Basin TMDLs
62-304.500	Ocklawaha River Basin TMDLs

PURPOSE:

The purpose of the rule is to adopt Total Maximum Daily Loads (TMDLs), and their allocations, for certain waters impaired for nutrients in the Aucilla River Basin, Lower St. Johns River Basin, and Ocklawaha River Basin.  Furthermore, in accordance with paragraph 62-302.531(2)(a), F.A.C., the nutrient TMDLs for Wacissa Springs, Crescent Lake, Lochloosa Lake, Cross Creek, and Lake Roberts will constitute site specific numeric interpretations of the narrative nutrient criterion set forth in paragraph 62-302.530(90)(b), F.A.C., that will supersede the otherwise applicable numeric nutrient criteria in subsection 62-302.531(2), F.A.C., for these surface water segments. The nitrate TMDL for the Wacissa River also will constitute a site specific numeric interpretation of the narrative nutrient criterion set forth in paragraph 62-302.530(90)(b), F.A.C., for this water segment that is in addition to the otherwise applicable numeric nutrient criteria in subsection 62-302.531(2), F.A.C., for the water segment.

SUMMARY:

These TMDLs address certain nutrient impairments in the Aucilla River Basin, Lower St. Johns River Basin, and Ocklawaha River Basin.  Specifically, the nutrient TMDL rules being proposed for adoption are for the Wacissa River (WBID 3424) and Wacissa Springs (3424Z), Crescent Lake (2606B), Lochloosa Lake (WBID 2738A), Cross Creek (WBID 2754), and Lake Roberts (2872A).  The Wacissa River and Wacissa Springs waterbodies were verified for nutrient impairments by nutrients because elevated concentrations of nitrate contributed to an imbalance of flora caused by algal smothering in the spring run; Lake Roberts and Crescent Lake waterbodies were verified for nutrient impairments based on elevated annual average of Trophic State Index (TSI); Lochloosa Lake and Cross Creek were verified for nutrient impairments due to elevated chlorophyll a concentrations, using the methodology established in Chapter 62-303, F.A.C., Identification of Impaired Surface Waters.  This rulemaking has been given an OGC case number 16-1492 for rule 62-304.406; 16-1493 for rule 62-304.415 and 16-1491 for rule 62-304.500.

RULEMAKING AUTHORITY:

403.061, 403.067 FS.

LAW:

403.061, 403.062, 403.067 FS.

PRINT PUBLISH DATE:

3/1/2017 Vol. 43/41

COMMENTS:

From 3/1/2017 To 3/22/2017 (21 Days)
The public comment period for this notice has already expired.

REFERENCE MATERIALS:

No reference(s).

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