Louisville MSD
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Louisville MSD Louisville and Jefferson County Metropolitan Sewer District Presented in Milwaukee on October 4, 2011
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Transcript of Louisville MSD
Louisville MSD
Louisville and Jefferson CountyMetropolitan Sewer District
Presented in Milwaukee on October 4, 2011
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Copyright ©2010:LOUISVILLE & JEFFERSON COUNTY METROPOLITAN SEWER DISTRICT (MSD)LOUISVILLE WATER COMPANY (LWC) LOUISVILLE METRO GOVERNMENT AND JEFFERSON COUNTY PROPERTY VALUATION ADMINISTRATOR (PVA). ALL RIGHTS RESERVED.
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Combined Sewer System History
Major CSSHistoric
Streams
Major CSSHistoric
Streams
Broadway Sewer
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Southwestern Outfall
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Western FPS
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Beargrass Creek FPS
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Floodwall
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Effective Greening for CSO Reduction
and much more
Louisville and Jefferson CountyMetropolitan Sewer District
Presented in Milwaukee on October 4, 2011
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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
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
Copyright ©2010:LOUISVILLE & JEFFERSON COUNTY METROPOLITAN SEWER DISTRICT (MSD)LOUISVILLE WATER COMPANY (LWC) LOUISVILLE METRO GOVERNMENT AND JEFFERSON COUNTY PROPERTY VALUATION ADMINISTRATOR (PVA). ALL RIGHTS RESERVED.
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Combined Sewer System History
Major CSSHistoric
Streams
Major CSSHistoric
Streams
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%)
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
Dam Installation
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96% Capture$400 Million Program Cost
IOAP Program BenefitsRegulatory 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
Improved Water Quality Improved Air Quality Public Desire Improved Quality of Life Economy
Local Green Drivers
Green Infrastructure Right Sizing Strategy
Storm Water Injection Wells
Downspout Disconnection
Infiltration Trenches
Bioswale
Rain Gardens
Pervious Pavers
Green Roofs
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High Cost Effectiveness
Lower Cost Effectiveness
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
Beargrass Creek
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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
August 4, 2009
Third & Magnolia
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Historic Flooding
1992 - Humler Street Boat Rescue
Aug 2009 - Near 22nd & Broadway
Aug 2009 - Near Maple Street
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.
CSO 206 Downspout Disconnection Pilot Program
CSO 206 Area
Multi-Acre Green Infrastructure Projects for Stormwater Reduction
Monitoring in place Staff empowered 100 Projects to start this year Revised Credits Program
Green Infrastructure
Senior Discount ProgramAge 65
$35,000 or less
CLEAN, GREEN, GROWING COMMUNITY
Click on Logo
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Sewershed Analysis
Green Infrastructure
Green Roads Green Alleys Green Parking Lots Bioinfiltration Urban Reforestation Rain Gardens Rain Barrels Downspout Disconnection Green Roofs
Local Green Drivers Improved Water Quality Improved Air Quality Public Desire Improved Quality of Life Economy
v
Title
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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
Amended Consent Decree
Significant Additions or Expansions– Definitions– Jeffersontown Water Quality Treatment
Center Eliminate Blending Potential New Connections
– Sampling, Monitoring, and Reporting– Stipulated Penalties
Amended Consent Decree
Southwestern Outfall
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Maple Street – Properties: 127; Aggregate Benefit/Cost Ratio >
2.0
MFWQTC
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Broadway Sewer
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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
August 2009 – 8.1” in 80-minutes: Day after installed; Day before plantings installed
MSD Main Office Rain Garden
