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8/31/2015
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
MARCH 24, 2015
Brad D. Werner, P.E.
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Key I/I Reduction Plan Components
Understanding of the Collection System
Developing solid Ordinances and Policies
Long-Range Plan Development
Capital Project Implementation
Post-Construction Investigation/Record Keeping/Tracking
Financing
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
CMOM
Definition • Capacity, Management, Operations and Maintenance
Uses • Better manage, operate and maintain collection systems • Investigate capacity constrained areas of the collection
system • Respond to sanitary sewer overflow (SSO events)
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Wisconsin Department of Natural Resources (WDNR)
Administrative Code Chapter NR110
NR110.03 Definitions
Infiltration "Infiltration" means water other than wastewater that enters a sewerage system (including sewer service connections) from the ground through such sources as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.
Inflow Inflow "Inflow" means water other than wastewater that enters a sewerage system (including sewer service connections) from sources such as roof leaders, cellar drains, yard drains, area drains, foundation drains, drains from springs and swampy areas, manhole covers, cross connections between storm sewers and sanitary sewers, catch basins, cooling towers, storm waters, surface runoff, street wash waters, or drainage. Inflow does not include, and is distinguished from, infiltration.
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
I & I Reduction
Public Sewer vs Laterals
Rehab Studies generally indicate • Mainline Only: 20-25% I/I Reduction • Mainline and laterals to R/W: 25-50% Reduction • Mainline and laterals to home: 50-80% Reduction
The “Gold” Standard • Precast Manholes with chimney seals • PVC Mainline • PVC Laterals • Sump Pumps / Drain Tile • Mini-Storm Laterals
WRWA 27th ANNUAL TECHNICAL CONFERENCE
The Collection System Basin Approach
“Time to Break it Down”
Basin Map Advantage • Breakdown Collection System into reasonable
sections for evaluation
• Monitoring and investigation of each basin’s flow
• Rank basins based on I/I contribution
• Evaluate all sources of I/I
• Track post construction monitoring and evaluation
• Refinement of the I/I program, based on results
• Effective and organized long-range planning
• Enhanced and more detailed understanding of the collection system
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Monitoring / Investigation Techniques “Getting to know and understand
your Collection System”
Interviews
Flow Metering
Smoke Testing
Manholes Inspections
Bottle Racks A Bottle Rack can be installed in a manhole to determine if a manhole experiences surcharging
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Monitoring / Investigation Techniques “Getting to know and understand
your Collection System”
CCTV Televising • Mainline • Laterals
Lift Stations • Monitoring the Pump Run Times on
Lift Stations to Track Flows
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Monitoring / Investigation Techniques continued
Dye Flood Testing
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Document Visually
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
WRWA 27th ANNUAL TECHNICAL CONFERENCE
8/31/2015
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration
Public System • Mainline
Joints
Fractured Pipe
Root Penetration
Lateral Connections
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
Public System • Manholes
Castings
Adjusting Rings
Block/Brick Failures
Leaking Barrel Joints
Pipe Connections
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
CASTING ROAD
BLOCKS IN CONE SECTION SHIFTED
ADJUSTING RING
BENCH
MH A5-743
WRWA 27th ANNUAL TECHNICAL CONFERENCE
HOLE IN STREET NEXT TO CASTING
MORTAR UNDER CASTING DETERIORATING
CASTING AT ROAD
BENCH
MH A5-707
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
Public System • Clearwater Sources in the Right-of-way
High groundwater table
Sanitary sewer trench acts as French drain
Usually lowest utility
Water follows the trench
Leaking water mains and services
Exfiltration from storm sewer
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
Private System - Laterals • Joints • Fractured Pipe • Root Intrusion • Broken Riser • Rolled Gasket • Pulled Joint
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
Private System • Clearwater Sources on the Private Side
Groundwater table
Lateral trench acts as French drain
Leaking water service
No drain tile
Direct or indirect connection to drain tile,
No sump pump
Sump pump connection to sanitary
Poor surface drainage away from home
Clearwater entering basement, then to the floor drain
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
8/31/2015
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Sources of Inflow/Infiltration continued
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Back to the Basin Map
Organize Data Visually
GIS Advantages • Layering your data
Fine Tune Your Game Plan
Predict the Potential for Success
Develop Capital Improvement Plan
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
Back to the Basin Map
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Ordinance and Policy Development
Review of Existing Ordinance and Policies • Definitions
Lateral ownership/maintenance/ replacement responsibility
Home to Mainline
Home to R/W or Easement
Acceptable pipe materials
Mainline
PVC, Clay, Concrete, ABS Truss, Ductile Iron
Laterals
PVC, Clay, Concrete, ABS Truss, Transite, Cast Iron
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Ordinance and Policy Development
Review of Existing Ordinance and Policies • Definitions
Defective determination
Pipe material
Evidence of leaking
Roots
Mineral deposits
Slope
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Ordinance and Policy Development
Replacement Ordinance / Policy
• Laterals Replacement order
Cost Share
Lateral in R/W
Lateral on Private Property
Limits of Lateral Reconstruction
Assessment Policy
Private Project
Utility Assistance
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Ordinance and Policy Development
Non-Sanitary Sewer-Related I/I Reduction Projects
• Sump Pumps / Drain Tile Inventory homes for working sump pump / drain tile
Identify / eliminate cross-connections
Require sump pump installations
Require drain tile installation
Annual inspection program
• Mini-Storm Sewer Program Provide mini-storm for sump pump discharge
Assessment policy
Long-range plan
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Remediation Techniques for Private Services
Conventional Reconstruction
ADVANTAGES
DISADVANTAGES
Proper slope
Remove dips and straighten alignment
Change pipe size
Pipe joints and lateral connection at main
Uncovers unknown problems
Maximizes useful life
Expensive restoration cost to homeowner
Physical constraints (garage, sheds, patios, decks, etc.)
Higher overall cost with restoration
Rear yard sewers / easements
Sewers in alleys
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Remediation Techniques for Private Services
Sliplining
Less restoration costs
Pipe can be Schedule 40 PVC
Pipe joints and lateral connection at main
Rehabilitate under physical constraints
Pipe size must be reduced
Dips and sags remain
Can not traverse bends or sudden alignment changes
ADVANTAGES
DISADVANTAGES
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Remediation Techniques for Private Services
Pipe Bursting
Less restoration costs
Pipe joints
Size option
Ability to traverse bends and other alignment changes
Rehabilitate under physical constraints
Dips and sags remain
ADVANTAGES
DISADVANTAGES
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Remediation Techniques for Private Services
Cured-In-Place Liner
Less restoration costs
No joints
Ability to traverse bends and other alignment changes
Rehabilitate under physical constraints
Connections to main
Dips and sags remain
Reduced effective pipe size
Cost is generally substantially higher than sliplining or bursting
ADVANTAGES
DISADVANTAGES
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Private Laterals – Public Projects
Private Lateral Work Bid Under Municipal Contract
Homeowners Notified of Non-compliant Laterals
Homeowner Given 2 Options • Hire their own contractor
• Complete under Municipal Contract Waiver of Special Assessment and Right to Enter Property
• 98% Participation Under Municipal Contract
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Private Laterals – Public Projects
Homeowner Advantages
• Municipal Contract Price
• Project Management by the Municipality
• Qualified Contractor
• Municipal Contract Warranty
• Municipal Financing Options
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Private Laterals – Public Projects
Municipal Advantages
• Project Control
• Single Contractor vs Multiple
• More Efficient to Manage and Oversee
• Most Cost-Effective
• Project Documentation Records
• Improves Public Education on I&I
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Private Laterals – Public Projects
Post Construction Problems
• Contractor Defects <5%
• Sump Pump Runs More
• Basement Floors and Walls Weeping
• Water Running on the Basement Floor During Rain Events
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Private Laterals – Public Projects Typical Costs
Estimated Costs for a Typical 4-inch Lateral in Conjunction with a Municipal Relay Project
Lateral portion on Private Property Excavated to an Outside Home Reconnection
35’ at $53/L.F. $ 1,855.00
Lateral Outside Reconnection $ 500.00
Estimated Cost $ 2,355.00
Lateral portion on Private Property Pipe Burst to Home Reconnection
35’ at $11/L.F. $ 385.00
Lateral Reconnection in Home $ 900.00
Fernco Connection $ 20.00
4” Bend $ 25.00
4” Cleanout $ 35.00
Concrete Floor Patch $ 60.00
Estimated Cost $ 1,425.00
No restoration of turf, landscaping, pavement, structures, etc. is included. Contractor shall compact and level the trench with trench spoils of restoration by the property owner.
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Associated Remediation Projects
Storm Sewer Replacement
Sump Pump Installation
Mini-Storm Sewer Installation
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
Post-Construction Items
Flow Monitoring • Establish Before / After Flows
Investigation of any Unresolved I/I Sources identified during Construction
Modification of Long-Range Plan
Record Documentation • Record Drawings • Document I/I Sources Removed • Update GIS
WRWA 27th ANNUAL TECHNICAL CONFERENCE
What We’ve Learned…
Successful I/I Programs require doing the Complete Job
• Mainline Replacement • Lateral Replacement to the Home • Address Sump Pumps • Storm Sewer / Mini-storm
In order to identify problems, you need to be actively looking for problems
There are very few “Big Ones”
“Band-Aids” are not the answer
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The McMAHON Way. Values, Culture, Relationships… for over 100 Years. 1445 McMAHON DRIVE NEENAH, WI 54956 920 751 4200 mcm@mcmgrp.com www.mcmgrp.com ID: PPT\2015\WRWA Technical Confer – I-I Reduction pres.pptx BDW:jmk 8/31/2015
WRWA 27th ANNUAL TECHNICAL CONFERENCE
What We’ve Learned…
Education • Governing Bodies • Customers
Offer Solutions
Post-Project Evaluations
Develop a Long-term Cost-effective Program • Annual Projects • 5 – 10 year Plan
Q A