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Dugway West Interceptor Relief Sewer (DWIRS) April 4, 2013
Agenda
• Project Location and Alignment• Easements, Constraints, and
Construction Sequencing• Community Benefits and
Restoration• Project Clean Lake and CSO
Benefits once completed
2
About us
• Created by Court Order in 1972• Servicing all or part of 62
member communities• 1 million customers• 90+ billion gallons wastewater
treated each year
3
What We Do
• Three wastewater treatment plants• Interceptor sewer operation,
maintenance• Combined Sewer Overflow control• Regional Stormwater Management
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Combined Sewer System
WWTP
Regulator
Industrial Wastewater
Street CatchBasins
Domestic Wastewat
er
Flow to WWTP
Combined Sewer
Lake Erie
Combined Sewer
Overflow
Dry weather outlet (DWO)
Storm Water Outlet (SWO)
How they work:Regulating structures allow excess stormwater to overflow
Side-spill weirSide-spill weir
Overflow pipeOverflow pipe
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Combined Sewer Overflow (CSO)
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Netting facility, floatable debris from combined sewer overflow 2010
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Project background
• Control CSO overflows• Consolidate existing regulators• Provide relief for up to a 5-year, 6-
hour storm event• Convey flow to current interceptor,
future tunnel• Prepare for future 17’ Doan Valley
Tunnel
11
By the numbers
•11,000 feet3’ to 6’ sewers in tunnel
•2,700 feet15” to 7’ sewers in open-cut
• Plus structures, regulators, and modifications
DWIRS location related to Dugway West Brook and Dugway West Culvert
Existing local sewer system
Existing CSO Regulators
Proximity to Dugway East Brook and Dugway Storage Tunnel
Proximity to Easterly Interceptor on the North End
Proximity to Doan Valley Tunnel on the South End
DWIRS Location
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Open Streams, Brooks ORIGINAL
Doan Brook/ CulvertDoan Brook/ Culvert
Dugway West Brook /Culvert
Dugway West Brook /Culvert
Nine Mile Creek/Culvert
Nine Mile Creek/Culvert
Dugway East Brook/Culvert
Dugway East Brook/Culvert
Open Streams, Buried Culverts CURRENT
Doan Brook/ CulvertDoan Brook/ Culvert
Dugway West Brook /Culvert
Dugway West Brook /Culvert
Nine Mile Creek/Culvert
Nine Mile Creek/Culvert
Dugway East Brook/Culvert
Dugway East Brook/Culvert
Bidding, Construction Schedule
1. DWIRS Project Bidding May 2013
2. Construction Start Sept. 2013
3. Substantial Completion May 2016 (32 months)
4. Final Completion Sept. 2016(36 Months)16
Easements, property acquisition• Ongoing discussions• Negotiations: TranSystems• Land Bank acquisitions, demolition:
NEORSD• 8 properties to be demolished• Demolition work will occur in the
first 5 months
17
Project Constraints
• Focus: Northern half, then southern– Utility relocation by other agencies
may occur anywhere along alignment
• Limit active shafts, work sites• Restore work zones shortly after
completion
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Project Constraints
• Coordinate with schools to maintain access to all driveways
• Limit haul routes• Complete work within St. Clair
within 12 months
19
Project Constraints
• Complete Durant sewer in final 12 months
• Demolish eight structures within first five months
• Work hours: 7 a.m. – 7 p.m.Monday – Saturday per the City
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Mainline A-Open Cut Mainline B-Tunnel St. Clair Ave East
Mainline C-Tunnel
Estimated Work Durations
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Provisions and monitoring• Inspections: Contractors will
video and photograph structures’ exterior
• Markers: Contractor will install Geotechnical instrumentation and survey markers on structures
• Vibration monitoring
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Provisions and monitoring• Surface settlement monitoring
over tunnel• Post-construction inspection• Restoration as needed
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Community benefits, restoration
• Aspects of restoration are open to community input
• Final Roadway restoration will include new pavement
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Community benefits, restoration
• Additional demolition will be considered
• Additional community benefits will be considered as opportunities are presented
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What is Project Clean Lake?• Consent decree with EPA• $3 billion 25-year program to
address water quality issues caused by sewage overflows (CSOs)
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What is Project Clean Lake?• 772 communities have similar
mandates
What is Project Clean Lake?• Reduce combined sewer overflow
volume
0123456789
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1972 TODAY 2035
Billions
of gallons
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7 tunnels to control CSO• 21 total miles• 17’ to 24’ diameters• 100’ to 200’ underground• Three Deep Tunnel Pump Stations• Drop Structures, Near Surface
Sewers and Structures
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Other CSO Project Coordination DST Overlap (DST)
DST-4 Forest Hills Park DST-5 St. Clair/E 109th DST-7 Lakeview and Ada DST-8 Lakeview and
Superior East 140th Relief Sewer
(E140) Doan Valley Tunnel (DVT)
Lakeview and Ada Superior Ave
Shoreline Storage Tunnel
(SST) Forest Hills Park Mining
Site
SSTSST
E140E140
DWIRSDWIRS
DSTDST
DVTDVT 47
AERIAL ALIGNMENT
DEIRS PROPOSED ALIGNMENT
48
CSO Reduction Benefits
Project TitleYear of
Completion
AnnualCSO capture
Dugway East Relief Sewer (DEIRS) 2012 85 Million Gallons
Euclid Creek Storage Tunnel (ECT) 2015 344 Million Gallons
Dugway West Relief Sewer (DWIRS) 2016 110 Million Gallons
Dugway Storage Tunnel/E 140th (DST/E140)
2020 411 Million Gallons
Doan Valley Tunnel (DVT) 2021 348 Million Gallons
Shoreline Storage Tunnel (SST) 2027 502 Million Gallons
Total CSO Capture
1,800 Million Gallons
What’s the benefit?
• Improve water quality– Clean beaches, recreation– Protecting clean-water resource– Improve our regional image– Neighborhood revitalization
• Regional economic impact– Job creation– Tax Revenue
3900 Euclid Avenue | Cleveland, OH 44115 | (216) 881-6600 | neorsd.org
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