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Floyds Fork Bacteria TMDL Overview: Objectives, Data, and Strategies for Water Quality Improvement

This document outlines the Total Maximum Daily Loads (TMDL) for bacteria in Floyds Fork, Kentucky. It reviews Kentucky’s bacteria criteria and presents sample site locations and data summaries, highlighting impaired segments and the Load Duration Curve. Key information includes TMDL calculations, allowable pollutant loads, and the allocation process. Emphasizing cooperation for nonpoint source allocations, it aims to restore water to its designated uses according to the Clean Water Act. For inquiries, contact Andrea M. Fredenburg at the Kentucky Division of Water.

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Floyds Fork Bacteria TMDL Overview: Objectives, Data, and Strategies for Water Quality Improvement

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  1. Floyds Fork Bacteria TMDL Andrea M. Fredenburg Kentucky Division of Water TMDL Section February 19, 2013

  2. Agenda • Review KY’s bacteria criteria • Show sample site locations and data summary • Show bacteria impaired segments • Explain Load Duration Curve • Review TMDL 101

  3. KY’s Bacteria Criteria

  4. Currys Fork WBP Sites Fecal Coliform 2007 and 2009

  5. MSD Sample Sites Fecal Coliform 2000-2010

  6. KDOW Sample Sites Fecal Coliform 1999, 1998-2004, 2004 E. coli 2006-2009

  7. Bullitt County WBP Sites Fecal Coliform 2005-2006

  8. USGS Sample Sites E. coli 2007-2008

  9. USGS Sample Sites E. coli 2007-2008

  10. Floyds Fork Bacteria Impairments

  11. Floyds Fork Bacteria Impairments

  12. Floyds Fork Bacteria Impairments

  13. TMDL and Allocations TMDL Calculation: TMDL(allowable # per day) = Allowable Concentration (allowable # per 100 ml) x Flow (in cubic feet per second) x Conversion Factor (24,465,758.4 per day) Allocations: TMDL = ∑WLA + ∑LA + MOS

  14. Load Duration Curve

  15. What Do the TMDLs Mean? • The TMDL identifies the allowable pollutant load and divides this allowable amount to sources. • The TMDL does not impose a new regulation: • The requirement to develop TMDLs and set Wasteload and Load allocations exist in the Clean Water Act • Kentucky water quality standards set pollutant concentrations or desired conditions

  16. What Do the TMDLs Mean? • The goal is to restore the impaired waters to their designated uses. • The Division of Water can modify KPDES permits such that the Wasteload Allocations will be met. • Implementation of Load Allocations (no permits/nonpoint sources) is not a regulatory process; rather a cooperative/voluntary effort sometimes facilitated by a local stakeholder-based planning process.

  17. Contact Information Andrea M. Fredenburg TMDL Section Division of Water 200 Fair Oaks Lane Frankfort, KY 40601 Andrea.Fredenburg@ky.gov

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