the benefits of lateral lining – one of the four pillars ... · the benefits of lateral lining...
TRANSCRIPT
![Page 1: The Benefits of Lateral Lining – One of The Four Pillars ... · The Benefits of Lateral Lining – One of The Four Pillars in Blueprint Columbus . Hunter Kelly, P.E., ... Lateral](https://reader034.vdocuments.site/reader034/viewer/2022051602/5ae76e1a7f8b9a87048f4cfa/html5/thumbnails/1.jpg)
The Benefits of Lateral Lining – One of The Four Pillars in Blueprint Columbus
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Hunter Kelly, P.E., City of Columbus DOSD
Qiuli Julie Lu, P.E., Arcadis
Hazem Gheith, P.E. Arcadis
Presenters
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Agenda
1. Blueprint Columbus Background
2. Flow Monitoring Program
3. Clintonville
4. Sewer Mains Lining and Lateral Lining Results
5. Lessons Learned
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Blueprint Columbus Timeline
2002: SSO Consent Order 2004: CSO Consent Order
2005: WWMP Approved
2013: OEPA Approved IP Process
2015: Blueprint Columbus Approved
2010: Lateral Lining
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What is Blueprint Columbus? • A new approach to eliminate sanitary sewer overflows (SSOs); • Addresses the source of the problem; • Keeps rain water out of the sanitary sewers.
Blueprint has four pillars – Lateral Lining – Sump Pump – Roof Redirection – Green Infrastructure
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Agenda
1. Blueprint Columbus
2. Flow Monitoring Program
3. Clintonville
4. Sewer Mains Lining and Lateral Lining Results
5. Lessons Learned
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Columbus Flow Monitoring Program
Flow Monitoring Program Started In 1995 • Currently 180 Flow Meters Active
• On Main Trunk Sewers
• CSO Regulators • Mainline DSR/SSOs
• For large sub-basin
• Pre and Post Blueprint Monitoring
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Agenda
1. Blueprint Columbus
2. Flow Monitoring Program
3. Clintonville
4. Sewer Mains Lining and Lateral Lining Results
5. Lessons Learned
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Clintonville I/I
• First major I/I study in Columbus • Comprehensive mainline/manhole
lining/rehabilitation
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Sewer Rehab – Sewer Mains Lining
• Started in early 2000s • 70% Sewer Mains lined • Post-lining flow monitoring revealed limited
I/I reduction
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Additional I/I Mitigation
• Additional I/I Reduction Needed • Large private source component to the I/I • Lateral Lining is needed to address private source I/I
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Lateral Lining Pilot
Selection of pilot study sites
Representative of neighborhood as a whole
Hydraulically Independent
Levels of I/I and customer issues (e.g. WIB’s)
Manageable size (approx.100 households)
Voluntary Participation
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Pilot Lateral Lining Areas
Weisheimer
Torrence
• Weisheimer: 130 Homes • Torrence: 86 homes
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Weisheimer Lateral Lining • Homes generally constructed in the 1940’s • Flat roadway cross-section • Fewer mature trees, easier access to homes
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Weisheimer Rd Lateral Lining
* Flow Meter Columbus_0192
Participated (105)
Not Participated (19) *
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Weisheimer Lateral Lining Timeline
Existing Conditions
ML Lining Completed
Monitoring ML Lining
Lateral Lining Completed
Post-Lateral Monitoring
July ‘05 June ‘06 May ‘08 January ‘11
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Torrence Lateral Lining Pilot Area • Homes generally constructed in the 1930’s • Homes elevated from road with terraced landscaping • Many old growth mature trees
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Torrence Lateral Lining
*
* Flow Meter Columbus_0370 Participated (71) Not Participated (14)
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Torrence Lateral Lining Timeline
Existing Conditions
ML Lining Completed
Monitoring ML Lining
Lateral Lining Complete
Post-Lateral Monitoring
Post Lateral Monitor
April ‘06 March ‘07 December ‘09 July ‘13 January ‘11
New
La
tera
ls
Line
d
June
‘13
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Voluntary Pilot Lateral Lining Implementation
• Public meetings, letters, door to door • Limited participation at first (20%) • Word of mouth, quality of work • Final participation 86%
Area Total Houses Lateral Lined Houses
% Lined
Weisheimer 124 109 88%
Torrence 85 71 84%
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Lateral Lining Technology
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Lateral Lining Technology
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Lateral Lining Data Analysis
• Compare rainfall with pre and post lining meter data • Control basin analysis (ARCADIS) • RDII reduction field test
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Agenda
1. Blueprint Columbus
2. Flow Monitoring Program
3. Clintonville
4. Sewer Mains Lining and Lateral Lining Results
5. Lessons Learned
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Control Basin Comparison Approach
• Hydraulically independent • Spatially close – Same rainfall
intensity and duration • Flow response follows a trend • Appropriate for pre and post
RDII reduction comparison
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Focusing on Wet Weather Flow
• Subtract DWF
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Comparison 1: Sewer Mains Lining
• Basin Clintonville_0226A: • Most sewers lined during 2013 and 2014
• Control Basin AS_39A
• Sewers lined in 2008
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Sewer Mains Lining Basins
AS_39A
Clintonville_0226A *
*
• Control Basin AS_39A: ~ 90 acres • Basin Clintonville_0226A: ~ 225 acres • Similar Landuse • Comparison Duration
• Pre Lining (2009 – 2012) • Post Lining (2015 – 2016)
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Sewer Mains Lining Results – Peak Flow
Pre Lining (2009 – 2012) Post Lining (2015 – 2016)
Around 15% reduction
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Sewer Mains Lining Results – RDII Volume
Pre Lining (2009 – 2012) Post Lining (2015 – 2016)
Around 15% reduction
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Comparison 2: Lateral Lining
• Two lateral lining basins • Columbus_0192
• Pre Lining (2007-2008) • Post Lining (2012-2016)
• Columbus_0370 • Pre Lining (2007-2009) • Post Lining (2012-2016)
• AS_19A as control basin
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Weisheimer Lateral Lining Results – Peak Flow
Around 57% reduction
Pre Lining (2007-2008) Post Lining (2012-2016)
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Weisheimer Lateral Lining Results – RDII Volume
Around 62% reduction
Pre Lining (2007-2008) Post Lining (2012-2016)
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Torrence Lateral Lining Results – Peak Flow
Around 48% reduction
Pre Lining (2007-2009) Post Lining (2012-2016)
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Torrence Lateral Lining Results – RDII Volume
Around 48% reduction
Around 36% reduction
Pre Lining (2007-2009) Post Lining (2012-2016)
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Agenda
1. Blueprint Columbus
2. Flow Monitoring Program
3. Clintonville
4. Sewer Mains Lining and Lateral Lining Results
5. Lessons Learned
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Lessons Learned • Main sewers lining reduces peak flow and volume by around 15% • Lateral lining (up to the house 4” x 6” connection) brings additional reduction
in peak flow 48-57% and volume 36-62% • CIPP Lining is a very effective tool for I/I mitigation (approximately 58% total
peak flow reduction) • These results led to Lateral Lining becoming one of the Pillars of Blueprint • Communication with residents is extremely important • Quality flow monitoring data is crucial for analysis
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Questions?
Hunter Kelly, P.E. [email protected], 614-645-0239 Qiuli Lu, Ph.D., P.E. [email protected], 614-985-9155 Hazem Gheith, Ph.D., P.E. [email protected], 614-634-0670