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Louisville MSD
The document summarizes the Louisville MSD infrastructure including its combined sewer system history and efforts to reduce combined sewer overflows through green infrastructure initiatives. It notes that the combined sewer system covers 24,000 acres and 670 miles of pipe, discharging over 2.6 billion gallons of overflow annually. Louisville MSD has invested over $400 million in a program to achieve 95% wet weather capture and comply with regulatory requirements through projects like dam installations, storage basins, and an amended consent decree requiring further improvements. The presentation highlights Louisville MSD's focus on green infrastructure strategies like rain gardens, bioswales, downspout disconnections, and green alleys to further reduce overflows in a cost-effective manner
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Louisville MSD
- 1. Louisville MSD Louisvilleand Jefferson County Metropolitan Sewer District Presented in Milwaukee on October 4, 2011
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- 5. Combined Sewer SystemHistory Major CSS Major CSS Historic Streams Copyright ©2010:LOUISVILLE & JEFFERSON COUNTY METROPOLITAN Historic Streams SEWER DISTRICT (MSD)LOUISVILLE WATER COMPANY (LWC) LOUISVILLE METRO GOVERNMENT AND JEFFERSON COUNTY PROPERTY VALUATION ADMINISTRATOR (PVA). ALL RIGHTS RESERVED. 5
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- 10. Floodwall 10
- 15. Effective Greening forCSO Reduction and much more Louisville and Jefferson County Metropolitan Sewer District Presented in Milwaukee on October 4, 2011
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- 17. 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
- 18. Louisville, Kentucky Cityof 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
- 19. Combined Sewer SystemHistory Major CSS Major CSS Historic Streams Copyright ©2010:LOUISVILLE & JEFFERSON COUNTY METROPOLITAN Historic Streams SEWER DISTRICT (MSD)LOUISVILLE WATER COMPANY (LWC) LOUISVILLE METRO GOVERNMENT AND JEFFERSON COUNTY PROPERTY VALUATION ADMINISTRATOR (PVA). ALL RIGHTS RESERVED. 19
- 20. CSO AAOV and Real Time Control CSO 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%)
- 21. 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
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- 23. 96% Capture $400 MillionProgram Cost
- 24. IOAP Program Benefits Regulatory Performance Combined 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
- 25. Local Green Drivers Improved Water Quality Improved Air Quality Public Desire Improved Quality of Life Economy
- 28. Green Infrastructure Right SizingStrategy Storm Water Injection Wells Downspout Disconnection High Cost Effectiveness Infiltration Trenches Bioswale Rain Gardens Lower Cost Pervious Effectiveness Pavers Green Roofs 28
- 29. Business Case Translatesto 250 million gallon AAOV reduction Estimated gray cost per gallon $0.30/gallon Partnerships provide cost sharing opportunities CLEAN, GREEN, GROWING COMMUNITY
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- 31. 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
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- 34. Historic Flooding Aug 2009- Near 22nd & Broadway 1992 - Humler Street Boat Rescue Aug 2009 - Near Maple Street 34
- 37. 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.
- 38. CSO 206 DownspoutDisconnection Pilot Program CSO 206 Area
- 39. Multi-Acre Green InfrastructureProjects for Stormwater Reduction
- 40. Green Infrastructure Monitoringin place Staff empowered 100 Projects to start this year Revised Credits Program
- 43. Senior Discount Program Age 65 $35,000 or less
- 44. Click on Logo CLEAN,GREEN, GROWING COMMUNITY
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- 46. Contact Information Brian Bingham 502-540-6145 bingham@msdlouky.org
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- 48. Green Infrastructure Green Roads Green Alleys Green Parking Lots Bioinfiltration Urban Reforestation Rain Gardens Rain Barrels Downspout Disconnection Green Roofs
- 49. Local Green Drivers Improved Water Quality Improved Air Quality Public Desire Improved Quality of Life Economy
- 50. Title v
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- 52. 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
- 53. Amended Consent Decree Significant Additions or Expansions – Definitions – Jeffersontown Water Quality Treatment Center Eliminate Blending Potential New Connections – Sampling, Monitoring, and Reporting – Stipulated Penalties
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- 56. Maple Street –Properties: 127; Aggregate Benefit/Cost Ratio > 2.0
- 57. MFWQTC 57
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- 59. 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
- 60. MSD Main OfficeRain Garden August 2009 – 8.1” in 80-minutes: Day after installed; Day before plantings ins
Editor's Notes
- #6 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
- #20 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
- #35 Left Photos – August 4,2009 Flooding EventRight Article – August 8, 1992 Humler Street Boat Rescue
- #57 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