1 / 27

Gene Yagow Virginia Tech Biological Systems Engineering Dept. Public Meeting Notes

Moores Creek and Lodge Creek, Meadow Creek and Schenks Branch ----------------------------------------------- Implementation Plan. Gene Yagow Virginia Tech Biological Systems Engineering Dept. Public Meeting Notes September 20, 2012 Charlottesville, VA.

gafna
Télécharger la présentation

Gene Yagow Virginia Tech Biological Systems Engineering Dept. Public Meeting Notes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Moores Creek and Lodge Creek, Meadow Creek and Schenks Branch -----------------------------------------------Implementation Plan Gene Yagow Virginia Tech Biological Systems Engineering Dept. Public Meeting Notes September 20, 2012 Charlottesville, VA

  2. Revision to Moores Creek TMDL Boundary • Outlet moved from confluence with Rivanna River upstream to the biological monitoring station at river mile 0.6 • Moores Creek WWTP • located near the outlet ≈ at river mile 0.3 • downstream from the biological monitoring station on which “impairment” is based • permitted sediment load is 416 tons/yr greater than existing load • Revision allows Moores Creek WWTP to be nested with the Rivanna River sediment TMDL • Revision foregoes requiring additional upstream reductions to satisfy the unused WWTP load • Revision approved by EPA

  3. Original Segments and Watersheds WWTP

  4. Revised Watershed Boundary

  5. Existing Loads, Reference Loads, and TMDLs

  6. TMDL Components TMDL = ƩWLA + ƩLA + MOS + FG where TMDL = total maximum daily load; WLA = wasteload (permitted) allocations; LA = load (nonpoint) allocations; MOS = margin of safety; and FG = future growth allocation (1%).

  7. Revised TMDLs

  8. Summary of Planned Reductions

  9. Allocation Scenarios

  10. Lodge Creek Sediment Load Allocation

  11. Moores Creek* Sediment Load Allocation * Excludes Lodge Creek

  12. Shenks BranchSediment Load Allocation

  13. Meadow Creek* Sediment Load Allocation * Excludes Schenks Branch

  14. BMP Summaries

  15. Control Measures: Lodge Creek

  16. Control Measures: Moores Creek**

  17. Control Measures: Schenks Branch

  18. Control Measures: Meadow Creek**

  19. Implementation Timeline

  20. IP Timeline: Lodge Creek

  21. IP Timeline: Moores Creek

  22. IP Timeline: Schenks Branch

  23. IP Timeline: Meadow Creek

  24. Implementation Costs: Moores Creek and Lodge Creek

  25. Implementation Costs: Schenks Branch

  26. Addressing PAHs • Selecting urban BMPs that infiltrate or address “first-flush” effects • Include vegetation with phytoremediation potential, e.g. switchgrass • Include educational materials on RRSEP web site, such as • Concerns with coal tar-based asphalt sealants and possible alternatives • Recycling of used motor oils • Through MS4 programs, emphasize proper management and maintenance of petrochemical storage areas

  27. Questions? • For more information, contact Gene Yagow 540-231-2538 eyagow@vt.edu

More Related