Louisville MSD
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  • Historic streams and ponds were filled in the early 1800’s. Early to mid 1800’s Louisville began constructing the first underground sewer which transported stormwater and wastewater directly to area streams and the Ohio River. In the 1940’s, construction of the 30 mile Ohio River flood protection system began, which included 16 large pumping stations. This system effectively protects most of Louisville from Ohio River flooding, but does not address the flooding from internal drainage. Also, the combined sewers effectively removed the flooding source from sight and, over time, developments were built in floodprone areas.Nearly 26 miles of stream filledOver 560 miles of combined sewer system
  • Historic streams and ponds were filled in the early 1800’s. Early to mid 1800’s Louisville began constructing the first underground sewer which transported stormwater and wastewater directly to area streams and the Ohio River. In the 1940’s, construction of the 30 mile Ohio River flood protection system began, which included 16 large pumping stations. This system effectively protects most of Louisville from Ohio River flooding, but does not address the flooding from internal drainage. Also, the combined sewers effectively removed the flooding source from sight and, over time, developments were built in floodprone areas.Nearly 26 miles of stream filledOver 560 miles of combined sewer system
  • Left Photos – August 4,2009 Flooding EventRight Article – August 8, 1992 Humler Street Boat Rescue
  • Selection Process Residential homes w/in the 10-YR floodplain Residential homes touching the boundary of the 10-YR floodplain Residential homes isolated by the 10-YR floodplain

Louisville MSD Presentation Transcript

  • 1. Louisville MSD Louisville and Jefferson County Metropolitan Sewer DistrictPresented in Milwaukee on October 4, 2011
  • 2. 2
  • 3. Combined Sewer System HistoryMajor CSSMajor CSSHistoric Streams Copyright ©2010:LOUISVILLE & JEFFERSON COUNTY METROPOLITANHistoric Streams SEWER DISTRICT (MSD)LOUISVILLE WATER COMPANY (LWC) LOUISVILLE METRO GOVERNMENT AND JEFFERSON COUNTY PROPERTY VALUATION ADMINISTRATOR (PVA). ALL RIGHTS RESERVED. 5
  • 4. Broadway Sewer 6
  • 5. Southwestern Outfall 7
  • 6. Western FPS 8
  • 7. Beargrass Creek FPS 9
  • 8. Floodwall 10
  • 9. Effective Greening for CSO Reduction and much more Louisville and Jefferson County Metropolitan Sewer District Presented in Milwaukee on October 4, 2011
  • 10. 16
  • 11. Louisville MSD Infrastructure 20 WWTP – 6 regional facilities – 14 small plants 300+ pump stations 3,200 mi of sewer – 2,430 mi sanitary – 670 mi combined – 100 mi force main 790 mi of streams Ohio River Flood Protection System – 15 Flood pump stations – 29 mi of floodwall
  • 12. Louisville, Kentucky City of Parks – adding 4,000 acres of new parks Louisville Loop – 100 mile loop around the community Waterfront Park along the Ohio River www.louisvilleky.gov
  • 13. Combined Sewer System HistoryMajor CSSMajor CSSHistoric Streams Copyright ©2010:LOUISVILLE & JEFFERSON COUNTY METROPOLITANHistoric Streams SEWER DISTRICT (MSD)LOUISVILLE WATER COMPANY (LWC) LOUISVILLE METRO GOVERNMENT AND JEFFERSON COUNTY PROPERTY VALUATION ADMINISTRATOR (PVA). ALL RIGHTS RESERVED. 19
  • 14. CSO AAOV and Real Time ControlCSO AAOV• Baseline 3,401 MG• RTC Phase I Reduction 616 MG (18%)• RTC Phase II Reduction 176 MG (5%)• 2010 AAOV 2,600 MG• Ultimate RTC Reduction 1,631 (48%)
  • 15. Combined Sewer System 24,000 acres 670 miles of pipe 106 CSOs 2.6 B gallons AAOV Nearly half of area is impervious surface Largest pipe 18.5’ x 27’ egg shaped
  • 16. Dam Installation 22
  • 17. 96% Capture$400 Million Program Cost
  • 18. IOAP Program Benefits Regulatory PerformanceCombined Sewer Plan– 95% wet weather capture supported by “knee of the curve” evaluation– Remaining CSOs alone (no background sources) do not cause significant WQ standards violations, complying with EPA “demonstrative approach”Sanitary Sewer Plan Eliminates– 167 documented SSOs– 8 small WWTPs– 100 tons BOD5, nearly 200 tons solids– Correction of Jeffersontown WWTP
  • 19. Local Green Drivers Improved Water Quality Improved Air Quality Public Desire Improved Quality of Life Economy
  • 20. Green InfrastructureRight Sizing Strategy Storm Water Injection Wells Downspout Disconnection High Cost Effectiveness Infiltration Trenches Bioswale Rain Gardens Lower Cost Pervious Effectiveness Pavers Green Roofs 28
  • 21. Business Case Translates to 250 million gallon AAOV reduction Estimated gray cost per gallon $0.30/gallon Partnerships provide cost sharing opportunities CLEAN, GREEN, GROWING COMMUNITY
  • 22. Beargrass Creek 30
  • 23. August 4, 2009 Over 7 inches of rain in 75 minutes on most intensely developed portion of the city! Significant damage to residential, commercial, and government buildings Combined Sewer System completely inundated
  • 24. Third & Magnolia
  • 25. Historic FloodingAug 2009 - Near22nd & Broadway 1992 - Humler Street Boat RescueAug 2009 - NearMaple Street 34
  • 26. University of Louisville Master Plan Created to Capture 25-Year Storm Event on the Belknap Campus Upstream of Park Hill and Maple Street Areas Using Green Incentives to Route ALL Impervious Surfaces on Campus to Infiltrating Features to Capture 5.1 Inches of Rain.
  • 27. CSO 206 Downspout Disconnection Pilot Program CSO 206 Area
  • 28. Multi-Acre Green Infrastructure Projects for Stormwater Reduction
  • 29. Green Infrastructure Monitoring in place Staff empowered 100 Projects to start this year Revised Credits Program
  • 30. Senior Discount Program Age 65 $35,000 or less
  • 31. Click on LogoCLEAN, GREEN, GROWING COMMUNITY
  • 32. 45
  • 33. Contact Information Brian Bingham 502-540-6145bingham@msdlouky.org
  • 34. Sewershed Analysis
  • 35. Green Infrastructure Green Roads Green Alleys Green Parking Lots Bioinfiltration Urban Reforestation Rain Gardens Rain Barrels Downspout Disconnection Green Roofs
  • 36. Local Green Drivers Improved Water Quality Improved Air Quality Public Desire Improved Quality of Life Economy
  • 37. Title v
  • 38. 51
  • 39. Amended Consent Decree Original CWA 308 Letter – May 2003 Original Consent Decree – August 12, 2005 Amended Consent Decree – April 15, 2009 Integrated Overflow Abatement Plan approved and incorporated into ACD – February 2010
  • 40. Amended Consent Decree Significant Additions or Expansions – Definitions – Jeffersontown Water Quality Treatment Center  Eliminate Blending  Potential New Connections – Sampling, Monitoring, and Reporting – Stipulated Penalties
  • 41. Southwestern Outfall 54
  • 42. Maple Street – Properties: 127; Aggregate Benefit/Cost Ratio > 2.0
  • 43. MFWQTC 57
  • 44. Broadway Sewer 58
  • 45. Source Control Investments Front-Loaded to Maximize Gray Reductions Green Infrastructure initial $46 M, $40 M in first 6 years Annual program includes demonstration projects, subsidies, and incentives Program includes line items for: – Downspout disconnects, rain gardens, rain barrels – Green roofs – Green streets & dry wells – Pervious pavement – Urban reforestation Adaptive management allows greater investment based on demonstrated performance
  • 46. MSD Main Office Rain GardenAugust 2009 – 8.1” in 80-minutes: Day after installed; Day before plantings ins