for Conveyance Systems
New Installations and Rehabilitation Methods
EPA 832-R-06-004 JULY 2006
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Emerging Technologies
FOR Conveyance Systems
New Installations and Rehabilitation Methods
Office of Wastewater Management
U.S. Environmental Protection Agency
Washington, D.C.
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Emerging Technologies JULY 2006
Emerging Technologies for Conveyance Systems:
New Installations and Rehabilitation Methods
EPA832-R-06-004
July 2006
Produced under U.S. EPA Contract No. 68-C-00-174
Prepared by the Parsons Corporation
Fairfax, Virginia
Technical review was provided by professionals with extensive experience in
conveyance systems. Technical reviewers of this document were:
Ifty Kahn, Wastewater Collection Division, DPWES, Fairfax County, Virginia
Lynn Osborne, Insituform, Chesterfield, Missouri
Recyled/Recyclable
Printed with vegetable-based ink on paper that contains a minimum of
50 percent post-consumer fiber content processed chlorine free.
Electronic copies of this handbook can be downloaded from
the U.S. EPA Office of Wastewater Management web site at:
www.eoa.aov/owm
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Preface
The U.S. Environmental Protection Agency (U.S. EPA) is charged by Congress
with protecting the nation's land, air, and water resources. Under a mandate of
environmental laws, the Agency strives to formulate and implement actions leading
to a balance between human activities and the ability of natural systems to support
and sustain life. To meet this mandate, the Office of Wastewater Management
(OWM) provides information and technical support to solve environmental problems
today and to build a knowledge base necessary to protect public health and the
environment well into the future.
This publication has been produced under contract to the U.S. EPA by Parsons
Corporation and provides current state of development as of the publication date.
It is expected that this document will be revised periodically to reflect advances
in this rapidly evolving area. Except as noted, information, interviews and data
development were conducted by the contractor. Some of the information, especially
related to embryonic technologies, was provided by the manufacturer or vendor of
the equipment or technology and could not be verified or supported by full-scale
case study. In some cases, cost data was based on estimated savings without
actual field data. When evaluating technologies, estimated costs, and stated
performance, the user should collect current and more up-to-date information.
The mention of trade names or specific vendors or products does not represent
an actual or presumed endorsement, preference, or acceptance by the U.S. EPA
or the Federal government. Stated results, conclusions, usage, or practices do not
necessarily represent the views or policies of the U.S. EPA.
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iv Conveyance Systems
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Contents
Page
Executive Summary ES-1
1. Introduction and Approach 1-1
1.1 Introduction 1-1
1.2 Approach 1-3
1.2.1 Information Collection and New Process Identification 1-3
1.2.2 Initial Screening Technologies 1-3
1.2.3 Development of Technology Summary Sheets 1-5
1.2.4 Evaluation of Technologies 1-5
1.3 Guidance Document Format and Use 1-11
1.4 Chapter References 1-12
2. Large-Diameter Sewers and Deep Tunnels 2-1
2.1 Introduction 2-1
2.2 Technology Assessment 2-1
3. Small-Diameter Sewers and Laterals 3-1
3.1 Introduction 3-1
3.2 Technology Assessment 3-1
4. Manholes 4-1
4.1 Introduction 4-1
4.2 Technology Assessment 4-1
5. Conveyance System Management 5-1
5.1 Introduction 5-1
5.2 Technology Assessment 5-1
6. Capacity Restoration 6-1
6.1 Introduction 6-1
6.2 Technology Assessment 6-1
7. Conveyance System Assessment 7-1
7.1 Introduction 7-1
7.2 Technology Assessment 7-1
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Contents
Page
8. Research Needs 8-1
8.1 Introduction 8-1
8.2 Research Needs 8-1
8.3 Chapter References 8-4
Appendix A
Trade Associations A-1
A.1 Introduction A-1
A.2 Trade Associations... ..A-1
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Emerging Technologies
List of Tables
Page
Table 1.1 Summary of Conveyance System Technologies 1-6
Table 1.2 Descriptive Evaluation Criteria 1-10
Table 2.1 Large-Diameter Sewers and Deep Tunnels Technologies - State of Development .2-3
Table 3.1 Small-Diameter Sewers and Laterals Technologies - State of Development 3-2
Table 4.1 Manhole Technologies - State of Development 4-2
Table 5.1 Conveyance System Management Technologies - State of Development 5-2
Table 6.1 Capacity Restoration Technologies - State of Development 6-2
Table 7.1 Conveyance System Assessment Technologies - State of Development 7-2
Table 8.1 Conveyance System Research Needs 8-3
List of Figures
Page
Figure 1.1 Flow Schematic for Guide Development 1-2
Figure 2.1 Evaluation of Large-Diameter Sewers and Deep Tunnels Innovative Technologies ...2-4
Figure 3.1 Evaluation of Small-Diameter Sewers and Laterals InnovativeTechnologies 3-3
Figure 4.1 Evaluation of Manhole Innovative Technologies 4-3
Figure 5.1 Evaluation of Conveyance System Management Innovative Technologies 5-3
Figure 6.1 Evaluation of Capacity Restoration Innovative Technologies 6-3
Figure 7.1 Evaluation of Conveyance System Assessment InnovativeTechnologies 7-3
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List of Abbreviations
3D three dimensional
ADFc critical average daily flow
ADF average dry-weather flow
AMC antecedent moisture conditions
ASCE American Society of Civil Engineers
ASTM American Society of Testing and Materials
BES Bureau of Environmental Services
CCTV closed-circuit television
CIP capital improvement program
CIPP cured-in-place pipe
CSO combined sewer overflow
CWMP Comprehensive Wastewater Management Plan
DEP Department of Environmental Protection
DEQ Department of Environmental Quality
DNR Department of Natural Resources
DO dissolved oxygen
EMC Environmental Management Commission
EPA Environmental Protection Agency
ERDC Engineer Research and Development Center
ESRI Environmental Systems Research Institute
FAC Florida Administrative Code
FELL Focused Electrode Leak Locator
g/ac/day gallons per acre per day
GASB Government Accounting Standards Board
GIS geographic information system
gpcd gallons per capita per day
gpd gallons per day
gpdidm gallons per day per inch-diameter mile
GRP glass-reinforced plastic
GWI groundwater infiltration
HDD horizontal directional drilling
HOPE high-density polyethylene
HRT hydraulic residence time
I/I infiltration and inflow
ISS inline storage system
VIII
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Emerging Technologies
List of Abbreviations
LF linear foot
MFP Master Facilities Plan
MGD million gallons per day
NASTT North American Society for Trenchless Technology
NDPU Non-Discharge Permitting Unit
NOAA National Oceanic and Atmospheric Administration
NPDES National Pollution Discharge Elimination System
O&M operation and maintenance
OAP Overflow Abatement Program
PF peak flow
POTW publicly owned treatment works
PVC polyvinyl chloride
PWWF peak wet weather flow
RDM rainfall-derived infiltration and inflow
RWQCB Regional Water Quality Control Board
SRF State Revolving Fund
SSES Sewer System Evaluation Survey
SSET Sewer Scanner and Evaluation Technology
SSO sanitary sewer overflow
SSOEP Sanitary Sewer Overflow Elimination Program
SWMM Storm Water Management Model
TISCIT Totally Integrated Sonar & CCTV Integrated Technique
WEF Water Environment Federation
WERF Water Environment Research Foundation
WPAP Water Pollution Abatement Program
WPCF water pollution control facility
WWTF wastewater treatment facility
WWTP wastewater treatment plant
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Executive Summary
In the year 2000, the United States operated 21,264 collection and conveyance systems
that included both sanitary and combined sewer systems (EPA's Clean Watersheds Needs
Survey 2000 Report to Congress). Publicly owned sewer systems in the country account
for 724,000 miles of sewer pipe and privately owned sewer pipe comprises an additional
500,000 miles (EPA's Report to Congress: Impacts and Control of CSOs and SSOs,
August 2004). Most of our nation's conveyance systems are beginning to show signs of
aging, with some systems dating back more than 100 years (American Society of Civil
Engineers, 1999). Over time, a wide variety of materials and practices have been used
for maintenance and repair. Sanitary and combined sewer overflows may be the result of
improper operation and maintenance of sanitary, combined, and/or storm sewer systems,
which can include structural, mechanical or electrical failures, collapsed or broken pipes,
and insufficient capacity. The outcome of programs for overflow control and infrastructure
asset management has resulted in a search for reliable, cost-effective conveyance system
technologies. The purpose of this document is to provide a source of information on the
newer technologies available. This document:
• Identifies nearly 100 conveyance system rehabilitation, replacement, and evaluation
technologies, including technologies that may extend the life of a conveyance
system.
• Classifies their development as established, innovative, or embryonic.
• Provides a Technology Summary Sheet for each innovative or embryonic process
with information about the description, state of development, associated contract
names, and data sources.
• Compares innovative processes/methods with respect to various criteria.
• Identifies research needs to guide the development of innovative conveyance
system management.
This document organizes the information regarding emerging conveyance technologies
into three categories of development.
Embryonic -They are in the development stage and/or have been tested at laboratory,
bench, or pilot-scale only.
Innovative - They have been tested at a demonstration scale, are available and
implemented in at least some locations in the United States, or have some degree of
initial use (i.e., implemented in less than 1 percent of rehabilitation/replacement projects
throughout the United States).
Established -They have been utilized in many locations (i.e., more than 1 percent of
the rehabilitation/replacement projects), or have been available and implemented in the
United States for more than 5 years.
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The document also provides information on each technology—its objective, its description,
its state of development, available cost information, associated contact names, and
related data sources. For each innovative technology, this document further evaluates the
technology with respect to various criteria, although it does not rank or recommend any
one technology over another. Research needs also are identified to guide development of
innovative and embryonic technologies and improve established ones.
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Chapt-
Introduction and Approach
1.1 Introduction
In the year 2000, the United States operated 21,264 collection and conveyance systems
that included both sanitary and combined sewer systems (EPA's Clean Watersheds Needs
Survey 2000 Report to Congress). Publicly-owned sewer systems in the country account
for 724,000 miles of sewer pipe and privately-owned sewer pipe comprises an additional
500,000 miles (EPA's Report to Congress: Impacts and Control of CSOs and SSOs,
August 2004). Most of our nation's conveyance systems are beginning to show signs of
aging, with some systems dating back more than 100 years (American Society of Civil
Engineers, 1999). Over time, a wide variety of materials and practices have been used
for maintenance and repair. One cause of sanitary and combined sewer overflows may
be improper operation and maintenance. Improper maintenance can include sanitary,
combined, and/or storm sewer systems, which can include structural, mechanical or
electrical failures, collapsed or broken pipes, and insufficient capacity.
To meet the challenge of ongoing and even increasing needs for maintenance and repair,
many utilities are seeking innovative technologies to replace, renew, or extend the life of
their conveyance systems. Unfortunately, information on new and emerging technologies
is not always readily available or easy to find. In light of this, and with the desire to make
such information available, the EPA has authorized the development of this document.
The goal of this document is straightforward—to provide a guide for people seeking
information on innovative and emerging conveyance system technologies. The guide
lists new technologies, assesses their merits and costs, and provides sources for further
technological investigation. This document is intended to serve as a tool for conveyance
system owners and operators.
To develop this guide, the investigators sought information from a variety of sources,
identified new technologies, prepared planning-level cost summaries for innovative and
embryonic technologies. This method is described below and in Figure 1.1.
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Figure 1.1 Flow Schematic for Guide Development
Collect Information
I
Identify Process
Established
No Further Action
Embryonic or Innovative
Prepare Process Summary Sheets
Established
No Further Action
Innovative
Prepare Process Evaluation Matrix
1-2
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1.2 Approach
1.2.1 Information Collection and New Process Identification
The information collection and new technology identification provided the foundation
for subsequent work. To identify new conveyance system technologies, investigators
gathered information from a variety of sources, including the following:
Published Literature -A comprehensive literature review was performed to identify new
technologies, and to evaluate their performance and applications. Specifically, the review
focused on relevant Water Environment Federation (WEF), Water Environment Research
Foundation (WERF), American Society of Civil Engineers (ASCE) and North American
Society for Trenchless Technology (NASTT) reports and conference proceedings, as well
as monthly publications from these and other organizations.
"Gray" Literature - Vendor-supplied information, Internet research, and consultants'
technical reports comprise the information collected in this category.
Patent Search - The U.S. Patent Office website has a very good search engine and
patent application information is available online.
Technical and Trade Associations-Investigators contacted a variety of professional
and technical associations in the United States to identify emerging conveyance systems
technologies. A peer review was conducted by experienced municipal engineers, and
consultants who provided input into the list of technologies included in this report and
information on the application and demonstration of these emerging technologies. Trade
Associations, such as North American Society for Trenchless Technologies (NASTT),
were also contacted for information and are listed in Chapter 9.
Interviews and Correspondence - Individuals known to the project investigation
team, including consultants, academia, and municipal conveyance system owners and
operators, were consulted.
Technologies identified through a search of the above sources were screened to determine
their classification as described below.
1.2.2 Initial Screening Technologies
Emerging technologies typically follow a development process that leads from laboratory
investigations to pilot testing and, subsequently, to initial use or "full-scale demonstrations"
and new applications before the technology is considered established. Not all technologies
survive the entire development process. Some fail in the laboratory or at the pilot stage;
while others see limited application in the field, due to poor performance or unexpected
costs that cause them to lose favor with practitioners in the field. Even technologies
that become established may also become dated, as technological advances lead to
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obsolescence. In short, technologies are subject to the same evolutionary forces present
in nature; those that cannot meet the demands of their environment fail, while those that
adapt to changing technological, economic and regulatory climates can achieve long-
standing success and survival in the market.
This project focuses on emerging technologies that are viable, but have not yet been
accepted as established processes in the United States. Neither embryonic nor established
technologies are considered in depth. Early in the development process (laboratory
stage), data is usually insufficient to prove or disprove technology viability at full scale.
Technologies on the other end of the developmental scale, those defined as established
in North America, are also excluded from detailed assessments on the assumption that
they are proven and widely used.
There may be differences between technologies established in Europe or Asia and those
that have reached similar status in the United States. Technologies that have been applied
successfully in other countries have not always flourished here. Because the viability
of imported technologies is not guaranteed, established processes from overseas are
classified as innovative technologies for this project unless they have been proven in
North American applications.
Specific screening criteria used to define the state of development for processes are as
follows:
Embryonic -These technologies are in the development stage and/or have been tested
at laboratory or bench scale. New technologies that have reached the demonstration stage
overseas, but cannot yet be considered to be established there, are also considered to be
embryonic with respect to North American applications. Seven embryonic technologies
have been identified for use in conveyance systems.
Innovative - Technologies that meet one of the following criteria were classified as
innovative:
• They have been tested at a demonstration scale;
• They have been available and implemented in the United States for less than
5 years;
• They have some degree of initial use (i.e. implemented in less than one percent of
rehabilitation/replacement projects throughout the United States); or,
• They are established technologies from overseas but not established in the United
States.
Thirty-four innovative technologies were identified for conveyance systems.
Established - These processes have been used in many locations in North America.
The category includes technologies that are widely used (e.g., pipe replacement) and
technologies that have been available and are used in United States for more than five years
(e.g., cured-in-place pipe). Fifty-one established technologies have been identified.
1.4 Convey an ce Systems
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Emerging Technologies
Some technologies fall into a "gray area" between the embryonic and innovative categories.
Technologies that fall into this category are incorporated into the innovative category. The
screening assessment summarized in Table 1.1 organizes the technologies in categories
that are discussed in greater detail in the individual chapters. One organizational category
represented in Table 1.1 is based on size. The large-diameter sewers or deep tunnels
category represented in Table 1.1 is defined as any pipe or structure greater than 12
inches in diameter. The small diameter sewers or laterals category applies to any pipe 12
inches or less in diameter.
1.2.3 Development of Technology Summary Sheets
Technologies defined as embryonic or innovative are each summarized on an individual
Technology Summary sheet. Each process includes the following information:
Objective - description of the goal of the technology.
Description - a brief overview of the technology.
State of Development - where and how the technology has been applied (i.e.
laboratory study, demonstration scale, full scale, etc.)
Available Cost Information - an approximate range of capital and operations and
maintenance costs, and assumptions made in developing them
Key Words for Internet Search - this document is not intended to provide a
comprehensive list of vendors for the included technologies; therefore, key words have
been added to aid the reader in finding additional vendors and current product information
on the Internet.
Contact Names - names, addresses, and telephone numbers of contacts with
additional information on the technology.
Data Sources - references used to compile the technology summary.
1.2.4 Evaluation of Technologies
Technologies defined as innovative in the initial screening were subjected to a detailed
evaluation.
Each technology was evaluated with respect to the descriptive and comparative criteria
described below. Descriptive criteria include:
State of Development - describes the stage of development for each technology,
ranging from development to full-scale operations.
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Table 1.1 Summary of Conveyance System Technologies
Classification
Application
Technology and Advancement(s)
Large-Diameter Sewers and Deep Tunnels (Chapter 2)
Coatings and Linings
Thermo-Plastic Liners (anchored or glued)
Glass-Reinforced Plastic (GRP) Panels
Modified Cross-Section Lining (fold and form
Sliplining Noncircular w/New Noncircular Pipe
Sliplining (segmental and spiral wound)
Polymer/Epoxy Concrete Lining
Spray-Applied Cementitious Lining
Non-Portland Polymer Concrete
Spray-Applied Epoxy Coating
Cured-in-Place Pipe (CIPP)
Composite/Fiberglass CIPP for Gravity Pipe
Spot (Point) Repair CIPP
Other Technologies
Grout Injection
Horizontal Directional Drilling (HD
Gasketed PVC Pressure Pipe
In-Line Pipe Expansion (i.e. pipe bursting)
Internal Pipe Joint Seals
Mechanical Spot Repair Sleeves
Microtunneling
Pipe Jacking
Pipe Ramming
Replacement (via excavation)
Sewer Odor and Corrosion Control Inserts (Vortex Flow)
Tunneling
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Emerging Technologies
Table 1.1 Summary of Conveyance System Technologies
Small-Diameter Sewers and Laterals (Chapter 3)
Cured-in-Place Pipe (CIPP)
Composite/Fiberglass CIPP for Gravity Pipe
CIPP for Vertical Applications
Lateral CIPP Liner (main to house)
Lateral CIPP Liner (house to main)
Lateral-Main Fiberglass CIPP Connection Inserts
Spot (Point) Repair CIPP Liners
Grout Injection
Lateral Grout Injection |
Lateral Grout Injection from Mainline (up to 30 ft length)
Other Technologies
Horizontal Directional Drilling (HDD)
Gasketed PVC Pressure Pipe
Impact Moling - Steerable Moles
In-Line Pipe Expansion (i.e. pipe bursting)
Lateral Pipe Bursting
Lateral Cleanout Connection
Mechanical Spot Repair Sleeves
Microtunneling
Modified Cross-Section Lining (i.e. fold and form)
Modified Cross-Section Lateral Lining
Pipe Jacking
Pipe Ramming|
Replacement (via excavation)
Sanipor Technology (flood grouting)
Sliplining (segmental and spiral wound)
Lateral Sliplining
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Table 1.1 Summary of Conveyance System Technologies
Classification
Application
Technology and Advancement(s)
Manholes (Chapter 4)
Bench/Invert Rehabilitation
Plastic Composite Invert System
Chimney Rehabilitation
Flexible Sealan
Mechanical Chi
Polyethylene Chimney Form
Coatings and Linings
Cured-in-Place (CIP) Liners
Poured-in-Place Concrete Liners
Spray or Trowel-Applied Cementitious Lining
Spray or Trowel-Applied Polymer Coating
Joint Sealing
Cementitious Grout/Patching
Epoxy Grout/Patching
Mechanical Joint Seals
Other Technologies
Fiberglass Rehabilitation Manholes
Frame Adjustments (raise/reset)
HOPE Frame Adjustment Rings
Glass-Reinforced Plastic (GRP) Insert
Lid (Cover) Inserts
Replacement
Sanipor® Technology (fill and drain)
Sewer Odor and Corrosion Control Insert
Conveyance System Management (Chapter 5)
ESRI-Based One-Call Ticket Management
Mobile CIS
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Emerging Technologies
Table 1.1 Summary of Conveyance System Technologies
Public Outreach on Fats, Oils, and Grease (FOG)
Regional I/I Control Program
Sewer Maintenance Prograr
Capacity Restoration (Chapter 6)
Sewer Cleaning
Pigging (force main cleaning)
Culvert Cleaning System
HDD Attachments for Culvert Cleaning
Other Technologies
Above-Grade Grit Removal System (bridge applications)
Basement Sump Pump Redirection
Foundation/Footer Drain Redirection
Interconnection Elimination
Roof Drain Redirection
Root Removal and Control
Storm Water Infiltration Pumps
Conveyance System Assessment (Chapter 7)
Closed-Circuit Television Inspection
Digital Camera Inspection (mobile)
Digital Camera Inspection (mounted)
FELL (Focused Electrode Leak Locator) Electro-Scanning
Ground-Penetrating Radar
Laser Profiling/30 Scan/Sonar
Pipe Mechanical/Strucural Reliability
Sewer Scanner and Evaluation Technology (SSET)
Smart Sewer Assessment Systems
TISCIT (Totally Integrated Sonar & CCTV Integrated Technique)
Wireless Monitoring Systems
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Applicability - qualitatively assesses in which market the technology is designed to
be utilized.
Benefits - considers the benefits gained (e.g., capital or operational savings) from
implementation of the technology.
Designations for each descriptive criterion are presented in Table 1.2.
Comparative criteria include:
Impact on Homeowners - describes whether or not the technology requires the
involvement of the homeowner, and the degree to which the homeowner's property
will be disturbed. Excavation and replacement of a line is the baseline for comparison;
technologies with less disturbance are rated as favorable.
Table 1.2 Descriptive Evaluation Criteria
Criterion
Designation
Description
State of Development
Demonstration projec
Limited municipal installations
Full-scale industrial applications, with potential for
application in municipal conveyance systems
Full-scale operations overseas
Full-scale operations in North America
Industrial
Municipal sanitary
Municipal storm
Municipal combined
Municipal sanitary and storm
Capital savings
Operational/maintenance savings
Inflow/infiltration reductio
SSO/CSO reduction
Restored structural integrity
Improved maintenance trackinq/manaqement
'
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Maintenance Requirements - considers the amount of labor required to adequately
maintain the technology. The baseline technology for a collection system is concrete
gravity sewers; technologies with maintenance requirements comparable to concrete
gravity sewers are considered neutral.
The above criteria compared individual technologies with other technologies in the same
category (e.g., liners etc.), and were scored favorable, neutral/mixed, or unfavorable.
The criteria and ratings were applied to each innovative technology and the results are
presented in matrixformat. Where available information was insufficient to rate a technology
for a criterion, no rating is given. The project team and reviewers assessed each technology
based on the limited information gathered and their collective judgment, experience, and
opinions. Results of the evaluation are presented in subsequent chapters.
1.3 Guidance Document Format and Use
The remainder of the document is divided into chapters based upon general technologies.
One chapter is dedicated to each of the following categories:
• Large-Diameter Sewers and Tunnels (Chapter 2)
• Small-Diameter Sewers and Laterals (Chapter 3)
• Manholes (Chapter 4)
• Conveyance System Management (Chapter 5)
• Capacity Restoration (Chapter 6)
• Conveyance System Evaluation (Chapter 7)
Each chapter overviews the technologies included, classifies the state of development
for each, presents an evaluation matrix for innovative technologies, and concludes with a
Technology Summary sheet for each embryonic and innovative technology.
The technology summaries and evaluation matrices are the cornerstones of each
chapter, broadly overviewing the innovative technologies. Neither the summaries nor the
matrices should be considered definitive technology assessments. Rather, they should
be considered stepping stones to more detailed investigations.
The research needs discussed in Chapter 8 display the specific technologies that may
have a significant impact on conveyance system construction and management, and their
relevant research needs. The new and improved technology solutions for wastewater
collection systems are key components in the preservation of the collection system
infrastructure. Research on the assessment of the system integrity, the operation,
maintenance, and rehabilitation, and new construction must be considered.
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For the reader's convenience, numerous trade associations, who are also excellent
sources of information on emerging technologies in their respectful areas of expertise,
are summarized in Appendix A.
This document should be updated from time to time. Technologies were reviewed in
2004-2005.
1.4 Chapter References
American Society of Civil Engineers. Optimization of Collection System Maintenance
Frequencies and System Performance (1999)
U.S. EPA. Report to Congress: Impacts and Control of CSO and SSOs. EPA 833-R-04-
001. Office of Water (2004)
U.S. EPA Clean Watersheds Needs Survey 2000 Report to Congress. EPA 832-R-03-
001. Office of Water (2000)
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Large-Diameter Sewers and Deep Tunnels
2.1 Introduction
For the purpose of this report, a large-diameter sewer or deep tunnel is defined as any
pipe or structure greater than 12 inches in diameter. This chapter focuses on both new
construction and rehabilitation technologies that can be utilized to restore and maintain
these critical conveyance system components.
2.2 Technology Assessment
A summary of emerging and established technologies for large-diameter sewers and deep
tunnels is provided in Table 2.1. The installation and maintenance techniques for pipes
and structures of this size are well-documented and understood, as they serve the basis
for conveyance systems that date back to over 100 years ago. The list of established
technologies in Table 2.1 reflects this knowledge base.
The large-diameter pipes and structures referred to in this report are greaterthan 12 inches
in diameter. It is important to note that technologies mentioned in this chapter may be
more common or practical when applied to a more specific size pipe. For example, the
cured-in-place pipe (CIPP) technologies discussed in the chapter are more common for
a medium-size pipe ranging from 15 to 36 inches in diameter. On the other hand, the
glass-reinforced panels (GRP) mentioned are more common amongst the larger diameter
pipes or tunnels with diameters greater than 36 inches. Polyvinyl chloride/high-density
polyethylene (PVC/HDPE) thermoplastic liners using a variety of anchoring and gluing
material, such as Ameron T-loc™,Linabond™, Amaerplate™, and Steuler P&S 400™,
have been extensively used for lining water pipe for many years. Therefore, the application
of these two-pass systems for lining tunnels and large sewer pipe, even though relatively
new to the industry, are not considered innovative.
Technology development in this area is now focusing on products for rehabilitation of
existing facilities. Properly maintaining large-diameter sewers and tunnels can be very
expensive as compared with smaller diameter sewers and in many cases municipalities
and organizations have delayed maintenance activities of their large sewer systems to
the point of structural deterioration and failure. GRP panels have been identified as an
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innovative technology aimed at restoring the structural integrity of large-diameter sewers
and tunnels in a cost-efficient manner. Another innovative approach is the use of sewer
pipes made with polymer or epoxy resins, such as Polycrete™ and Polymer Concrete
FX-826™. These materials are extremely strong and corrosion resistant. Epoxy concrete
can be applied in a one-step approach to provide a new interior surface as well as repair
damaged pipe and restore structural integrity.
In addition to rehabilitation advances, progress has also been made to improve existing
techniques so they are more suitable for non-traditional applications. A gasketed PVC joint
has been developed that allows PVC to be used as practical alternative to HOPE pipe in
horizontal directional drilling. Sliplining of a noncircular host pipe with a new, noncircular
pipe has also come into the marketplace recently. In addition, the use of non-Portland
cement based polymer concrete, such as Biocrete™, for rehabilitating has demonstrated
significant cost savings in the foreign market.
An evaluation of the innovative technologies identified for large-diameter sewers and
tunnels is presented in Figure 2.1. Summary sheets for each innovative and embryonic
technology are provided at the end of this chapter.
2-2 Conveyance Systems
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Table 2.1 Large-Diameter Sewers and Deep Tunnels Technologies - State of Development
c_
C
( '!
a
'
Established
Composite/Fiberglass CIPP for Gravity Pipe
Grout Injection
Horizontal Directional Drilling (HDD)
In-Line Pipe Expansion (i.e., pipe bursting)
Internal Pipe Joint Seals
Mechanical Spot Repair Sleeves
Microtunneling
Modified Cross-Section Lining (i.e., fold and
form)
Pipe Jacking
Pipe Ramming
Replacement (via excavation)
Sliplining (segmental and spiral wound)
Spot (point) Repair CIPP
Spray-Applied Cementitious Lining
Spray-Applied Epoxy Coating
Thermoplastic Liners (anchored or glued)
Tunneling
Innovative
Gasketed PVC Pressure Pipe
Glass-Reinforced Plastic (GRP) Panels
Polymer/Epoxy Concrete Lining
Sewer Odor and Corrosion Control Inserts
(Vortex Flow)
Embryonic
Sliplining of Noncircular Pipe with New
Noncircular Pipe
Non-Portland Polymer Concrete
CD
s-
CD
tn
-------
Figure 2.1 Evaluation of Large-Diameter Sewers and Deep Tunnels Innovative Technologies
Sasketed PVC Pressure Pipe
Glass-Reinforced (GRP) Panels
Polymer/Epoxy Concrete Lining
*
ewer Odor and Corrosion Control Inse
I
LISCAAAAAs compared with replacement
LBCCRA A A A As compared with replacement
L Bl A A A A As compared with current practice
AS
compared with current practic
State of Development
KEY
D = Demonstration project
L = Limited municipal installations
I = Full-scale industrial applications, with potential
0= Full-scale operations overseas
N= Full-scale operations in North America
Applicability
I = Industrial
S = Municipal sanitary
T = Municipal storm
C= Municipal combined
for application in municipal conveyance systems B = Municipal sanitary and storm R= Restored structural integrity
Potential Benefits
C= Capital savings
0= Operational/maintenance savings
I = Inflow/infiltration reduction
S = SSO/CSO reduction
M= Improved maintenance tracking/manage-
ment
Comparative Criteria
A Positive feature
© Neutral or mixed
V Negative feature
-------
JULY 2006
Emerging Technologies
Technology Summary
Gasketed PVC Pressure Pipe
Objective:
Increase strength and integrity of polyvinyl
chloride in systems.
State of Development: Innovative
This technology has been around since 2004 and is
widely used in Canada (20-30 municipalities to date)
as well as parts of the United States.
Description:
The gasketed PVC pressure pipe is assembled in way that is similar to the assembly of the standard PVC
pipe, only the gasketed pipe is locked in place with a ring and pin system. The pipe is locked once the
system is hammered in to place. The wide groove on the spigot end of the pipes allow joint bending in the
pipe. The joint bending then allows the PVC pipe to be pulled into boreholes with the ability to withstand the
forces involved.
Available Cost Information:
Approximate Capital Cost: 40% higher than regular PVC
Approximate O&M Costs: Low
O&M Costs are similar to any regular PVC systems around. In general, they are very low maintenance.
Vendor Name(s):
IPEXInc.
2441 Royal Windsor Drive
Mississauga, Ontario J5J 4C7 Canada
Phone: 800-463-9572
FaxL 905-403-9195
E-mail: ricsta@ipexinc.com
Practitioner(s):
City of Springfield, Missouri
Public Works
P.O. Box 8368
Springfield, MO 65801
R. Stuart Royer & Associates, Inc.
1100 Welborne Drive, Suite 300
Richmond, VA 23229
Key Words for Internet Search:
Pressure, pipe, gasket, PVC, water, sewer
Data Sources:
"New Research Yields and Innovative Design for PVC Pipe." Trenchless Technology (7-8 August 2004)
Conveyance Systems
2-5
-------
Emerging Technologies
JULY 2006
Technology Summary
Glass-Reinforced Plastic (GRP'
Objective:
Structural rehabilitation of large-diameter gravity
sewers and tunnels.
State of Development: Innovative
This technology has been installed in two municipalities
nationwide. In 2003, GRP panel lining was used to
rehabilitate 72-inch-diameter pipe in Fort Wayne,
Indiana, and pipe ranging from 108-126 inches in
diameter in Chicago, Illinois
Description:
Fiber reinforced, filled, thermo-set resin panels are custom designed to fit a variety of sewer and tunnel
shapes, including oval, round, rectangular, square, horseshoe. The panels can be installed utilizing a man-
entry procedure in conveyance facilities ranging from 54 to 144 inches and higher in diameter. Half-pipe
panels are fitted together in place to form a full diameter segment. The annular space between the panels
and the host pipe is filled with grout to complete the installation.
Available Cost Information:
Approximate Capital Cost: $10-$13/diameter-inch/LF
Approximate O&M Costs: Periodic maintenance and visual inspection
Capital cost information is provided for a line segment that is several hundred feet long (over 200 LF), and
includes both material and installation costs. Using the lower end of the cost range as an example, the unit
price for a 96-inch diameter pipe would be $960/LF.
Vendor Name(s):
Insituform Technologies, Inc.
17999 Edison Avenue
Chesterfield, MO 63005
Phone: 636-530-8000
Fax: 636-530-8744
E-mail: losborne@insituform.com
Practitioner(s):
City of Fort Wayne
Division of Water Utilities, Water Resources
Sewer Repair and Replacement
One Main Street, Room 480
Fort Wayne, IN 46802
Key Words for Internet Search:
Glass-reinforced plastics, GRP, panel, pipe fiber, water
Data Sources:
Hicks, M., T.J. Short, P.E., J. Teusch, P.E., I.E. Osborn, PE. "Glass Reinforced Plastic (GRP): A New
Rehabilitation Technique for Sewers in Indiana," Proceedings of ASCE Specialty Conference Pipelines,
ASCE Specialty Conference, San Diego, CA (1-4 August 2004)
Osborn, L, "Rehabilitation of Large Chicago Sewers with Glass Reinforced Panels," Proceedings of North
American Society for Trenchless Technology (NASTT) NO-DIG Conference, New Orleans, LA (22-24
March 2004)
Jason Consultants International, Inc. "New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology." Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
Vendor-supplied information
2-6
Conveyance Systems
-------
JULY 2006
Emerging Technologies
Technology Summary
Polymer/Epo;
Objective:
Sewer pipes lined with concrete made with
polymer or epoxy materials are extremely
corrosion resistant.
State of Development: Innovative
The basic technology of spray-applying concrete
linings to repair of existing pipe has been available in
the United States for many years. However, using a
polymer or epoxy mixture is relatively new.
Description:
Polymer concrete is made using conventional Portland cement with the addition of 7-15% resin by weight.
The resin is an orthopthalic, isopthalic, vinyl ester resin, or epoxy resins. The resin bonds the different
materials together, giving the polymer concrete greater elasticity and safety against fracture as well as
improved corrosion resistance. Polymer concrete can be used to line new pipe or to repair old pipe and can
be applied at the factory or in the field. The polymer concrete can be applied either in a "dry gun - Gunite"
or "wet gun - Shotcrete" approach. Epoxy concrete can be applied in a one step approach to provide a new
interior surface, as well as, repair damaged pipe and to restore structural integrity.
Available Cost Information:
Approximate Capital Cost: Cost ranges from 10%-20% more than conventional field-applied concrete
lining such as Gunite or Shotcrete using Portland cement.
Approximate O&M Costs: $0 - unit is self-cleaning. Improved corrosion protection and longer service
life.
Vendor Name(s):
Fox Industries
3100 Falls Cliff Road
Baltimore, MD 21211
Practitioner(s):
See websites for practitioners: http://www.thomasnet.
com/products/sealants-cement-concrete-96117932-
Lhtml. orwww.foxind.com
Key Words for Internet Search:
Polymer concrete, epoxy concrete, corrosion-resistant pipe lining
Data Sources:
Vendor-supplied information (www.mever-polvcrete.coml
Vendor-supplied information (www.foxind.com)
Association-supplied information (www.nastt.oral
Vendor-supplied information (www.rohmhaas.coml
Conveyance Systems
2-7
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Emerging Technologies
JULY 2006
Technology Summary
Sewer Odor and Corrosion Control Inserts (Vortex Flow)
Objective:
To prevent the release of odorous gases in drop
structures and force main discharges to sewer
manholes.
State of Development: Innovative
This technology has been available since 1998. It has
been used in approximately 30 locations worldwide
(ten to fifteen units in the United States, two units in
Canada, and two units in Australia).
Description:
A sewer odor and corrosion control insert can be installed in a new or existing precast manhole, and each
insert is custom designed and built for the specific application. Atypical insert consists of a channel that is
connected to the manhole influent line, a drop shaft, and a shaft base that allows wastewater to spill over
to the manhole effluent pipe. Patented by IPEX Inc., the spiral flow design of the Vortex Flow pulls odorous
gases downward toward the bottom of the cylindrical structure and promotes oxidation of these gases,
which naturally reduces odor. Odorous gases are partially oxidized on the way down by the energy of
falling flow, and are then entrained back into the wastewater. An elevation drop of 6 feet or more is required
for proper operation of the insert. Thus, this technology is applicable for incorporation in drop manholes,
chambers, and pumping stations.
Available Cost Information:
Approximate Capital Cost: Base price $5,000 plus $2,000 for each million gallons per day capacity
Approximate O&M Costs: $0 - unit is self-cleaning
Vendor Name(s):
IPEX, Inc.
2441 Royal Windsor Drive
Missassauga, Onatrio J5J 4C7 Canada
Practitioner(s):
Parsons Water & Infrastructure
10521 Rosehaven Street
Fairfax, VA 22030
KeyWords for Internet Search:
Odor, corrosion, control, manholes, sewer, inserts, vortex, flow
Data Sources:
Vendor-supplied information
2-8
Conveyance Systems
-------
JULY 2006
Emerging Technologies
Technology Summary
Sliplining of a Noncircular Pipe with a New Noncircular Pipe
Objective:
Reconstruct sewer line and laterals without
excavation using formed-in-place liner for
sewers that are not circular.
State of Development: Embryonic
This technology has been used in Europe.
Developmental work currently is taking place in the
United States.
Description:
Sliplining is a rehabilitation process in which a slipliner pipe is placed inside the existing old lateral pipe.
The non-circular method uses a liner pipe profile that is designed so that it will slip through the section
of the sewer that is narrowest. Once the new pipe is in place the pipe is filled with water to discourage
deformation and the space between the new and old pipe is filled with low density foam grout.
Available Cost Information:
Approximate Capital Cost: U nknown
Approximate O&M Costs: U nknown
Vendor Name(s):
Sekisui SPRAmerices, LLC
7 Sunbelt Business Park Drive, Suite 2
Greer, SC 29650
Phone: 864-662-1329
Fax: 864-662-1350 (fax)
Email: info@sekisui-spr.com
Practitioner(s):
See website for practitioners:
http://www.sekisui-spr.com/
Key Words for Internet Search:
Sliplining, noncircular pipe, Romo-Line
Data Sources:
North American Society for Trenchless Technology site: www.trenchless-technoloav.org
Conveyance Systems
2-9
-------
Emerging Technologies
JULY 2006
Technology Summary
Objective:
Sewer pipes made with polymer or
epoxy materials are extremely corrosion
resistant.
State of Development: Embryonic
This technology has been available in Germany since 1960. It
has been used in many locations worldwide, including numerous
cities in the United States, Canada, and Australia. Most
applications to date have been for industrial sewers.
Description:
Polymer concrete is made using conventional Portland cement with the addition of 7-15% resin by weight.
The resin is an orthopthalic, isopthalic, or vinyl ester resin. The resin bonds the different materials together,
giving the polymer concrete greater elasticity and safety against fracture as well as improved corrosion
resistance. Polymer concrete pipes have been manufactured by various processes including centrifugal and
vibrating processes in both reinforced and non-reinforced sections. Circular and oval pipe as well as special
cross-sections and manhole sections can be manufactured in the same way. Epoxy resins can also be used
as an additive to the concrete mixture for pH ranges of 0.5 to 13. Pipes are joined using flexible elastomeric
seals (ASTM D4 161), while widely used for new construction, the use of non-Portland or epoxy concrete for
rehabilitation is a new application.
Available Cost Information:
Approximate Capital Cost: Cost ranges from 10% to 20% more than conventional concrete pipe of the same
size and strength.
Approximate O&M Costs: $0 - unit is self-cleaning. Provides increased corrosion protection and extends
service life.
Vendor Name(s):
Meyer Rohr
Otto-Brenner-Str. 5
D-21337 Lueneburg, Germany
Practitioner(s):
See website for practitioners:
http://www.meyer-polycrete.com/en
KeyWords for Internet Search:
Polymer concrete, epoxy concrete, corrosion-resistant pipe
Data Sources:
Vendor-supplied information (www.meyer-polycrete.com)
Vendor-supplied information (www.foxind.com)
Vendor-supplied information (www.nastt.org)
Rohm and Haas Company (www.rohmhaas.com)
2-10
Conveyance Systems
-------
Chapter
Small-Diameter Sewers and Laterals
3.1 Introduction
A small-diameter sewer or lateral, as defined in this document, is a pipe 12 inches or
less in diameter. This chapter focuses on both new construction and rehabilitation
technologies that can be utilized to restore and maintain these critical conveyance
system components.
3.2 Technology Assessment
Table 3.1 includes a categorized list of emerging and established technologies for
small-diameter sewers and laterals. These pipes, especially laterals, have become
the target of many municipal rehabilitation programs because they are the main
sources of inflow and infiltration to conveyance systems. As a result, technological
development in this area has focused mainly on rehabilitation of existing facilities.
Many innovative technologies and approaches for the rehabilitation of small-
diameter sewers and laterals have been identified. These include technologies such
as CIPP liners for vertical rehabilitation applications and fill and drain (Sanipor®)
technology. Although several technologies for lateral rehabilitation are starting to
emerge as forerunners in the marketplace, such as CIPP liners, the technologies
themselves are not new and have been used sparingly throughout the United
States for up to 10 years. As such, these technologies have been classified as
"established" for the purposes of this report.
An evaluation of the innovative technologies identified for small-diameter sewers
and laterals is presented in Figure 3.1. Summary sheets for each innovative and
embryonic technology are provided at the end of this chapter.
Conveyance Systems
3-1
-------
Table 3.1 Small-Diameter Sewers and Laterals Technologies - State of Development
CD
£
CD
n
CD
en
Established
Innovative
Embryonic
Composite/Fiberglass CIPP for Gravity Pipe
Horizontal Directional Drilling (HDD)
In-Line Pipe Expansion (i.e. pipe bursting)
Mechanical Spot Repair Sleeves
Microtunneling
Modified Cross-Section Lining (i.e. fold & form)
Pipe Jacking
Pipe Ramming
Replacement (via excavation)
Sliplining (segmental and spiral wound)
Spot (point) Repair
CIPP for Vertical Applications
Gasketed PVC Pressure Pipe
Impact Moling-Steerable Moles
Lateral Cleanout Connection
Lateral Grout Injection
Lateral Grout Injection from Mainline
(up to 30 ft in length)
Lateral CIPP Liner (house to main)
Lateral CIPP Liner (main to house)
Lateral-Main Fiberglass CIPP Connection Inserts
Lateral Pipe Bursting
Lateral Sliplining
Sanipor® Technology (flood grout)
Modified Cross-Section Lateral Lining
c_
c
fO
o
o
O5
-------
Figure 3.1 Evaluation of Small-Diameter Sewers and Laterals Innovative Technologies
c_
C
( '!
o
O5
CIPP for Vertical Application
Gasketed PVC Pressure Pipe
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^•^^
Impact Moling - Steerable Moles
Lateral Cleanout Connection
Lateral Grout Injection |
Lateral CIPP Liner (house to main
Lateral CIPP Liner (main to hous
s compared with replacme
As compared with replacement
^m^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^m
© © As compared with replacement
A © © As compared with new installation using T-section
A V © As compared with replacement
As compared with replacement
As compared with replaceme
State of Development
KEY
D = Demonstration project
L = Limited municipal installations
I = Full-scale industrial applications, with potential
0= Full-scale operations overseas
N= Full-scale operations in North America
Applicability
I = Industrial
S = Municipal sanitary
T = Municipal storm
C= Municipal combined
for application in municipal conveyance systems B = Municipal sanitary and storm R= Restored structural integrity
Potential Benefits
C= Capital savings
0= Operational/maintenance savings
I = Inflow/infiltration reduction
S = SSO/CSO reduction
M= Improved maintenance tracking/manage-
ment
Comparative Criteria
A Positive feature
© Neutral or mixed
V Negative feature
CD
tn
-------
Figure 3.1 Evaluation of Small-Diameter Sewers and Laterals Innovative Technologies (continued)
Lateral Grout Injection from Mainline
Lateral-Main Fiberglass CIPP Connection Inserts
Lateral Pipe Bursting
Lateral Sliplining
Sanipor® Technology (flood grouting)
'
V
0 As compared with replacement
A A As compared with replacement
0 A As compared with replacement
A As compared with replacement
A A As compared with replacement
State of Development
KEY
D= Demonstration project
L = Limited municipal installations
I = Full-scale industrial applications, with potential
0= Full-scale operations overseas
N= Full-scale operations in North America
Applicability
I = Industrial
S = Municipal sanitary
T = Municipal storm
C= Municipal combined
for application in municipal conveyance systems B = Municipal sanitary and storm R= Restored structural integrity
Potential Benefits
C= Capital savings
0= Operational/maintenance savings
I = Inflow/infiltration reduction
S = SSO/CSO reduction
M= Improved maintenance tracking/manage-
ment
Comparative Criteria
A Positive feature
© Neutral or mixed
V Negative feature
-------
JULY 2006
Emerging Technologies
Technology Summary
CIPP for Vertical Applicati
Objective:
Provide a smooth interior surface to a damaged
vertical pipe.
State of Development: Innovative
Am-Drain has been on the market in the United States
since 2003 and available for the rehabilitation of down
spouts in Europe for 15 years prior to the United States'
use.
Description:
CIPP Applications for vertical pipes differ from the lateral lining because of the difficulties accompanied
with the resin application to a vertical pipe. Typically resin would run down from the upper to lower portions
of the inverted liner. Am-Drain is a needle-punched, nonwoven polyester felt tube with a PVC coating.
Am-Drain is cured to the vertical pipe when the liner harders. An inversion drum, with the help of an air
compressor inserts the liner tube into the damaged pipe while inverting the liner throughout the process.
One CIPP vertical method uses a woven liner rather than a normal CIPP liner. This woven liner holds the
resin more and prevents it from slipping due to gravity.
Available Cost Information:
Approximate Capital Cost: $14-$24/LF dry materials and resin
Approximate O&MCosts: Periodic inspection and cleaning
Costs will vary depending on the degree of bends in the pipe, lining material, and resin mat.
Vendor Name(s):
MaxLiner, LLC
450 College Drive
Martinsville, VA 24112
Practitioner(s):
Ace Pipe Cleaning
Carylon Corporation
1509 Sylvania Court
Fort Worth, TX76111
Key Words for Internet Search:
Vertical pipe lining, Am-Drain, vertical CIPP
Data Sources:
Griffen, Jeff. "Vertical Lining: Historic Forth Worth Church Has Downspout Repaired Without Destruction of
Wall." Rehabilitation Technology: Underground Construction (July 2004)
Vendor-supplied information
Conveyance Systems
3-5
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Emerging Technologies
JULY 2006
Technology Summary
Gasketed PVC Pressure Pioe
Objective:
Increase strength and integrity of polyvinyl
chloride in systems.
State of Development: Innovative
Technology has been around since 2004 and is widely
used in Canada (20-30 municipalities to date) as well
as parts of the United States.
Description:
The gasketed PVC pressure pipe is assembled similar to how a standard PVC pipe is assembled, only the
gasketed pipe is locked with a ring and pin system. The inner and outer rings of the pipe are hammered into
place locking the joints in the system. Due to the wide groove on the spigot end of the pipe bending at the
pipe's joints is possible. This joint bending allows the PVC to be pulled into boreholes and to withstand the
forces involved.
Available Cost Information:
Approximate Capital Cost: 40% higher than regular PVC.
Approximate O&M Costs: Low
Vendor Name(s):
IPEX, Inc.
2441 Royal Windsor Drive
Mississauga, Ontario J5J 4C7
Phone: 800-463-9572
Fax: 905-403-9195
Email: ricsta@ipexinc.com
Practitioner(s):
See website for practitioners:
http://www.ipexinc.com/Content/Common/2_0_
Products/2_0_1_Case_Studies/case_study_list.asp
Key Words for Internet Search:
Pressure, pipe, gasket, PVC, water, sewer
Data Sources:
"New Research Yields an Innovative Design for PVC Pipe." Trench/ess Technology (7-8 August 2004)
3-6
Conveyance Systems
-------
JULY 2006
Emerging Technologies
Technology Summary
Impact Moling - Steerabl
Objective:
Uses a compaction principle to create a bore in
compressible soils in which pipe is then installed.
State of Development: Innovative
Innovative applications such as steerable moles
allowing curves and direction changes.
Description:
Moling is based on a percussion or hammering action with a pneumatic piercing tool to create a bore by
compacting and displacing soil rather than removing it. The impact mole consists of an enclosed steel tube
containing an air powered piston that strikes the nose of the tool driving it forward. It has low operational
costs, simplicity in operations with minimal excavation. Moling is limited by ground conditions. One
steerable mole is offered in the market place. It uses walkover tracking and remote steering similar to that
in the horizontal drilling industry. A sonde integrated within the forward end of the tool body is made rugged
to withstand the impact of the mole. The current generation of steerable moles have a dual position steering
head with two operating modes, one for straight and an asymetrical one for steering.
Available Cost Information:
Approximate Capital Cost: $35,000 per machine; price includes all parts and everything needed for
impact moling.
Approximate O&M Costs: Included in capital cost.
Vendor Name(s):
TT Technologies of Illinois
2020 E. New York St.
Aurora, IL 60504
Phone: 800-533-2078
info@ttechnologies.com
Practitioner(s):
U.S. Army Corps of Engineers
Vicksburg, MS
Key Words for Internet Search:
Impact moling, pipe ramming, trenchless technology, bore, steerable mole
Data Sources:
"Guidelines for Impact Moling." TTC Technical Report #2001.03. U.S. Army Corps of Engineers, ERDC,
Vicksburg, MS
Conveyance Systems
3-7
-------
Emerging Technologies
JULY 2006
Technology Summary
Lateral Cleanout Connection
Objective:
Install cleanout on existing lateral where one
does not exist.
State of Development: Innovative
Process has been commercially available for three
years with the installation of several thousand feet of
line.
Description:
The lateral is located by TV camera that finds a location for the cleanout that will not require bends or
fittings. A vacuum excavating unit is then used to dig an 18-inch hole that will expose the lateral, the
vacuum will be used to remove all soil. A two-part epoxy mix is used to glue the bottom of the saddle to the
lateral when it is dropped and snapped over the lateral pipe. After the 15 minutes the epoxy takes to set, a
water hydrostatic test is performed, followed by the use of a coring tool to core out the lateral. The coupon
is removed and a clean out cap is added. A new riser or clean out can be attached.
Available Cost Information:
Approximate Capital Cost: $750 to $1,500 each
Approximate O&M Costs: Same as standard cleanout.
Costs vary based on location, depth, and soil conditions.
Vendor Name(s):
LMK Enterprises, Inc.
Practitioner(s):
Rock River Water Reclamation District
3333 Kishwaukee St.
Rockford, IL61109
Key Words for Internet Search:
Vacatee, lateral liner system, CIPP, cleanout
Data Sources:
Vendor-supplied information
3-8
Conveyance Systems
-------
JULY 2006
Emerging Technologies
Technology Summary
Lateral Grout Injectio
Objective:
Seal the lateral-main connection and cracks and
joints in laterals to prevent inflow and infiltration
into the sanitary sewer system.
State of Development: Innovative
Description:
Seals lateral by creating a impermeable gel ring outside the pipe joint. Lateral grout injection is
accomplished using a packer, which is inserted through a manhole and positioned in the line using
a camera. The packer is rotated and a grouting plug is inflated up the lateral. Grout is injected, to fill
the annular area, into the surrounding soil, creating a sand and gel ring outside the pipe and service
connection. The packer elements are deflated and pulled back into packer, scraping excess gel from the
service line.
Available Cost Information:
Approximate Capital Cost: $300-$500 per lateral
Approximate O&M Costs: Periodic visual inspections and cleaning recommended
Capital cost estimate is based on grouting each joint in the first 8 ft-10 ft of the lateral from the sewer main.
Vendor Name(s):
Avanti International
822 Bay Star Blvd.
Webster, TX 77598
Practitioner(s):
See website for practitioners: http://avantigrout.com
Key Words for Internet Search:
Grout rehabilitation, injection, lateral pipe, joint sealing
Data Sources:
"Methods to Control Leaks in Sewer Collection Systems, "An informative White Paper written by C. Vipu,
Ph.D., P.E., Director of CIGMAT, and Chairman of Civil Engineering Department, University of Houston,
Houston, TX
Jason Consultants International, Inc." New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology." Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
Simicevic, Jadranka, Raymond L. Sterling, Ahmad Habibian, Rick Nelson, Roger L. Tarbutto, and Alan
Johnson. "Methods for Cost-Effective Rehabilitation of Private Lateral Sewers." WERF (2006)
Vendor-supplied information
Conveyance Systems
3-9
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Emerging Technologies
JULY 2006
Technology Summary
Lateral Grout Injection from Mainline (Up to 30-ft in Length)
Objective:
Seal the lateral-main connection and cracks
and joints in laterals up to 30 feet from the main
sewer line to prevent inflow and infiltration into
the sanitary sewer system.
State of Development: Innovative
A Packer and 30-foot grouting plug have been
developed and tested in a laboratory setting. As of May
2005, 24 units have been installed.
Description:
Lateral grout injection is accomplished using a packer, which is inserted into a sewer main through a
manhole. The packer is remotely positioned in the mainline at the lateral connection, and a grouting plug
is inflated up the lateral. Grout is injected, or pumped, into the lateral up to the location of the group plug.
Grout is forced through cracks and joints into the surrounding soil, where it solidifies to form a watertight
seal outside the pipeline. This grouting can be applied to laterals up to 30 feet from the main sewer line.
Available Cost Information:
Approximate Capital Cost: Varies
Approximate O&MCosts: Varies
Vendor Name(s):
Logiball, Inc.
HC 76 P.O. Box 625
Jackman, ME 04945
Phone: 800-246-5988
Fax: 418-653-5746
E-mail: marc@logiball.com
Practitioner(s):
Heitkamp, Inc.
New England Pipe Cleaning Co.
99 Callender Road
P.O. Box 730
Watertown, CT 06795
Key Words for Internet Search:
Grout rehabilitation, injection, lateral pipe, joint sealing, mainline
Data Sources:
Jason Consultants International, Inc. "New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology." Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
Simicevic, Jadranka, Raymond L. Sterling, Ahmad Habibian, Rick Nelson, Roger L. Tarbutton, and Alan
Johnson. "Methods for Cost-Effective Rehabilitation of Private Lateral Sewers." WERF (2006)
Vendor-supplied information
3-10
Conveyance Systems
-------
JULY 2006
Emerging Technologies
Technology Summary
Lateral CIPP Liner (House to Mail
Objective:
Provide reconstruction of service lateral pipe
without excavation by the installation of a resin
conduit liner.
State of Development: Innovative
Description:
Woven or nonwoven material is impregnated with thermosetting resin and installed in an existing pipeline or
conduit using an air inversion and curing process. Product designed to rehabilitate pipelines with diameters
from 2 to 8 inches and negotiates curves (up to 90°) and lines through 4-6 inch transitions without changing
structural properties of the liner. Installation through existing building sewer lines permit connection without
stretching into sewer main.
Available Cost Information:
Approximate Capital Cost: Ranges from $2500 - $4500
Approximate O&M Costs: Periodic visual inspections recommended.
Costs are highly variable and will fluctuate based on pipe size, material, condition, depth, and accessibility
(i.e. cleanout available).
Vendor Name(s):
Perma-liner Industries
6196 126th Avenue North
Largo, FL 33773
Phone: 727-507-9749
Email: dough@perma-liner.com
Practitioner(s):
Southwest Pipeline
539 West 140th Street
Gardena, CA 90248
Key Words for Internet Search:
CIPP lateral lining, sewer rehabilitation, resin, house cleanout, DrainLiner™, Formadrain®, INFlex Liner™,
Inserv™, MaxLiner™, PermaLateral™, Primeliner™, and Verline Lateral, Saertex® Liner, PrimeLiner LC™,
Insituform® Lateral, LMK T-Liner®
Data Sources:
Jason Consultants International, Inc. New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology. Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
Black and Veatch Corporation. Effective Practices for Sanitary Sewer and Collection System Operations
and Maintenance. Alexandria, VA. Water Environment Research Foundation (WERF) (2003)
Bergstrom, E., P.E., B. Swarner, P.E., M. Lopez, P.E., "Infiltration and Inflow (I/I) Reduction in 10 Pilot
Projects, King County, Washington," Proceedings of the Water Environment Federation Collection Systems
2005 Conference, Sustaining Aging Infrastructure: System, Workforce and Funding (CD-ROM), Boston, MA
(17-20 July 2005)
Simicevic, Jadranka, Raymond L. Sterling, Ahmad Habibian, Rick Nelson, Roger L. Tarbutton and Alan
Johnson. "Methods for Cost-Effective Rehabilitation of Private Lateral Sewers." WERF (2006)
Vendor-supplied information
Conveyance Systems
3-11
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Emerging Technologies
JULY 2006
Technology Summary
Lateral CIPP Liner (Main
Objective:
Provide reconstruction of service lateral pipe
without excavation by the installation of a resin
conduit liner.
State of Development: Innovative
Description:
The polyester resin-impregnated tube is installed into an existing service lateral through the mainline pipe.
The resin and tube are inverted into place so that when installed the cured-in-place pipe will fit the internal
circumference of the existing pipe. The resin and tube are held in place by internal pressure until cured into
a impermeable continuous pipe within a pipe.
Available Cost Information:
Approximate Capital Cost:
Approximate O&M Costs:
$3,500 for installation in lateral up to 20 ft from main; $45 per ft beyond 20 ft
Costs will vary depending on quantity of materials, quality of installations,
location, and other installation needs
Vendor Name(s):
Insituform Technologies, Inc.
702 Spirit 40 Park Drive
Chesterfield, MO 63005
Phone: 636-530-8000
Fax: 636-519-8010
Email: spearson@insituform.com
Practitioner(s):
Boston Water and Sewer Company
Boston, MA
Key Words for Internet Search:
CIPP lateral lining, sewer rehabilitation, resin, mainline
Data Sources:
Jason Consultants International, Inc. New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology. Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
Black and Veatch Corporation. Effective Practices for Sanitary Sewer and Collection System Operations
and Maintenance. Alexandria, VA. WERF (2003)
Bergstrom, E., P.E., B. Swarner, P.E., M. Lopez, P.E., "Infiltration and Inflow (I/I) Reduction in 10 Pilot
Projects, King County, Washington," Proceedings of the Water Environment Federation Collection Systems
2005 Conference, Sustaining Aging Infrastructure: System, Workforce and Funding (CD-ROM), Boston, MA
(17-20 July 2005)
King County Department of Natural Resources and Parks, Wastewater Treatment Division. Pilot Project
Report, Regional Infiltration and Inflow Control Program, King County, WA. (October 2004)
Simicevic, Jadranka, Raymond L. Sterling, Ahmad Habibian, Rick Nelson, Roger L. Tarbutton, and Alan
Johnson. "Methods for Cost-Effective Rehabilitation of Private Lateral Sewers." WERF (2006)
Vendor-supplied information
3-12
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Lateral-Main Fiberglass CIPP Connection Inserts
Objective:
Provide reconstruction of service lateral pipe
without excavation by the installation of a resin
.impregnated,, flexible, felt. tube.
State of Development: Innovative
Description:
Installation of a polyester or vinyl impregnated corrosion resistant fiberglass insert into a lateral opening
to fit T and Y connections. Insert is factory-impregnated with an epoxy bonding component. The laminate
is placed on an applicator, driven into the lateral opening and inserted by air inversion approximately 6
inches into the lateral and 3 inches in the mainline on either side of the lateral opening. The product is
available for lines between 6 and 36 inches in diameter.
Available Cost Information:
Approximate Capital Cost:
Approximate O&M Costs:
$1,300 to $1,700 per insert
Capital and O&M costs will vary depending on quantity of materials, quality
of installations, location, and other installation needs.
Vendor Name(s):
Top Hat Systems™
Cosmic Sondermaschinenbau GmbH
Steinabruck 35
3072 Kasten, Austria
U.S. Distributor-Amerik Supplies, Inc.
260 Ainsley Court
Marietta, GA 30066
Phone: 770-924-2899
Practitioner(s):
Town of Pinetops
Pinetops, NC
Southwest Pipeline
539 West 140th St.
Gardena, CA 90248
Key Words for Internet Search:
Top hats, connection inserts, CIPP lateral
Data Sources:
Materials and Technology." Alexandria, Virginia: Water Environment Research Foundation (WERF)
(2000)
Larsen, P., P.E., G. Keibler, and E. Heijn. "Awakening From the Nightmare on 10th Street - Trenchless
Repair to Prevent Deep Excavations in Closed Rear-Yard Easements," Proceedings of the 77th Annual
Water Environment Federation Technical Exposition and Conference [CD-ROM], New Orleans, LA (2-6
Oct. 2004)
Bergstrom, E., P.E., B. Swarner, P.E., and M. Lopez, P.E. "Infiltration and Inflow (I/I) Reduction in 10
Pilot Projects, King County, Washington," Proceedings of the Water Environment Federation Collection
Systems 2005 Conference, Sustaining Aging Infrastructure: System, Workforce and Funding [CD-ROM],
Boston, MA. (17-20 July 2005)
King County Department of Natural Resources and Parks, Wastewater Treatment Division. Pilot Project
Report, Regional Infiltration and Inflow Control Program, King County, WA (October 2004)
Vendor-supplied information
Conveyance Systems
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Emerging Technologies
JULY 2006
Technology Summary
Lateral Pipe Bursting
Objective:
Replace an existing lateral without excavation,
with the same or larger diameter pipe (applicable
for 4-8 inch diameter pipe).
State of Development: Innovative
Description:
A portable static bursting system (Grundotugger) with a direct bolt expander and optional pneumatic
piercing tool is used to hydraulically pull a winch cable and the expander tool and new pipe through an
existing line. The expander fractures the existing pipe and displaces the fragments into the surrounding
soil while the new pipe is pulled in behind. Lateral bursting allows for a increase in the diameter from the
original host size.
Available Cost Information:
Approximate Capital Cost: $25,000 for Grudotugger, estimated $40LF.
Approximate O&M Costs:
Vendor Name(s):
TT Technologies
2020 E. New York St.
Aurora, IL 60504
Phone: 800-533-2078
Fax: 630-851-8299
www.tttechnologies.com
Practitioner(s):
King County
Department of Natural Resources and Parks
Wastewater Treatment Division
201 S. Jackson St., Suite 505
Seattle, WA 98104-3855
Key Words for Internet Search:
Static pull, pipe bursting, lateral rehabilitation, Grundotugger
Data Sources:
Jason Consultants International, Inc. "New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology. Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
Black and Veatch Corporation. Effective Practices for Sanitary Sewer and Collection System Operations
and Maintenance. Alexandria, VA. WERF (2003)
Bergstrom, E., P.E., B. Swarner, P.E., and M. Lopez, PE. "Infiltration and Inflow (I/I) Reduction in 10 Pilot
Projects, King County, Washington," Proceedings of the Water Environment Federation Collection Systems
2005 Conference, Sustaining Aging Infrastructure: System, Workforce and Funding (CD-ROM), Boston, MA
(17-20 July 2005)
King County Department of Natural Resources and Parks, Wastewater Treatment Division. Pilot Project
Report, Regional Infiltration and Inflow Control Program, King County, WA (October 2004)
District of West Vancouver and Dayton & Knight Ltf. (D&K). West Vancouver (Pipe Bursting) Case Study
(Oct6-Dec18, 2003)
Vendor-supplied information
3-14
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Lateral Sliplining
Objective:
Reconstruct sewer line and laterals without
excavation using formed-in-place liner.
State of Development: Innovative
Innovative application for house laterals. Essentially no
longer used for small-diameter lateral repair.
Description:
Lateral sliplining is a rehabilitation process in which a slipliner pipe is placed inside the existing old lateral
pipe. This method does not include any folding or heating of the slipliner, and will decrease the inner
diameter of the existing pipe by the size of the new pipe. Sliplining is a more practical process for larger
diameter laterals because of the possibility of pipe blockage in pipes smaller than six inches in diameter.
Available Cost Information:
Approximate Capital Cost: Estimated at $110-$120/LF
Approximate O&M Costs: Costs vary depending on the number of laterals being lined.
Vendor Name(s):
Miller Pipeline Corporation
P.O. Box 34141
8850 Crawfordsville Rd.
Indianapolis, IN 46234
Phone: 800-428-3742
Fax: 317-293-8502
Practitioner(s):
See website for practitioners/case studies:
http://nastt.net/NoDig/index.htmlor
http://www.millerpipeline.com
Key Words for Internet Search:
Sliplining, lateral pipe, rehabilitation, resin, liner, insertion renewal
Data Sources:
"Pipe Within a Pipe is a Winning Solution". Australasian Society Trenchless for Technologies Newsletter.
(October 2004)
Telephone conversation with Simicevic, Jadranka, Raymond L. Sterling, Ahmad Habibian, Rick Nelson,
Roger L. Tarbutton, and Alan Johnson. "Methods for Cost-Effective Rehabilitation of Private Lateral
Sewers." Water Environment Research Foundation (WERF) Draft (2005)
Vendor-supplied information
Conveyance Systems
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Emerging Technologies
JULY 2006
Technology Summary
Sanipor® Technology (F1
Objective:
Non-structural rehabilitation of laterals,
manholes, and mainlines by sealing to prevent
leaking and/or infiltration.
State of Development: Innovative
Although it has only been used in the USA over the last
year, Sanipor® Technology has been used in Europe for
over 10 years. In Germany, Sanipor® technology has
been used and has had positive results.
Description:
Repairs systems using two liquids (S-1 and S-2). After cleaning and closing off the main pipe, S-1 solution
is pumped into the system. S-1 solution is able to get into the surrounding soil through leaking points. S-1
is pumped out after approximately an hour and S-2 solution is pumped in. S-2 will also get through the leak
points and into the surrounding soil, where it mixes with S-1 and forms a conglomerate-like solution that
seals the leak points. S-2 is pumped out after an hour and the line is then flushed clean and reconnected to
the system.
Available Cost Information:
Approximate Capital Cost: $8,000/day (equipment)
Approximate O&M Costs: Unknown
Capital costs do not include items prior to Sanipor installation (i.e. mainline and lateral CCTV, clean outs,
purchase of plugs
Vendor Name(s):
AKZO Nobel EKA Chemicals
Marietta, GA
Sanipor®
Feldkirchen, Germany
www.sanipor.de/sanipor.htm
Practitioner(s):
City of Lafayette
Lafayette Utilities System
705 W. University Avenue
Lafayette, LA 70506
Key Words for Internet Search:
Sanipor, No Dig, sewer renovation, trenchless, flood grouting
Data Sources:
Case study - Sanipor Pilot 2003 in Lafayette, LA (https://www.latech.edu/tech/engr/ttc/werf)
Jadranka Simicevic, Trenchless Technology Center (jandranka@coes.latech.edu)
Pipe Materials and Technology. Alexandria, Virginia. Water Environment Research Foundation (WERF)
(2000)
3-16
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Modified Cross-Section Lateral Lining
Objective:
Line existing pipe without the need for
excavation or time for cure-in-place, field-cured
systems.
State of Development: Embryonic
Description:
A high-strength unplasticized PVC resin liner that is continuously inserted through existing manholes and
into existing lines while being heated and softened. Once in place along the pipeline, it is expanded to fit
tightly within the host pipe by applying both steam and pressure. The PVC pipe is then cooled by replacing
the steam with air. This method differs from the CIPP by expanding the liner in place rather than curing it in
place. This process is often referred to as pipe-within-a-pipe, though the diameter of the pipe is only slightly
decreased.
Available Cost Information:
Approximate Capital Cost: Unknown
Approximate O&M Costs: U nknown
As of publication date, capital cost data was not available for this embryonic technology. It is anticipated
that modified cross-section lateral lining will be comparable in price to Lateral CIPP Lining House to Main.
Vendor Name(s):
Miller Pipeline Corporation
P.O. Box 34141
8850 Crawfordsville Road
Indianapolis, IN 46234
Phone: 800-428-3742
Fax: 317-293-8502
Practitioners):
See website for practitioners/case studies:
http://www.millerpipeline, com/ex.html
Key Words for Internet Search:
Modified cross-sections, cured-in-place lateral lining, seals, sewer
Data Sources:
Vendor-supplied information
Conveyance Systems
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Emerging Technologies JULY 2006
3-18 Conveyance Systems
-------
Chapt-
Manholes
4.1 Introduction
Manholes serve as aboveground access points to the underground conveyance
system. This chapter focuses on both new construction and rehabilitation
technologies that can be utilized to restore and maintain manholes.
4.2 Technology Assessment
The state of development of technologies identified for manholes is summarized
in Table 4.1. Similarly to large-diameter sewers and deep tunnels, much of
the technology available for manholes is established, having been available
and utilized in the United States for numerous years. However, six innovative
technologies, as well as one embryonic technology, have been identified. Glass-
reinforced plastic inserts made of the same material used to rehabilitate large-
diameter sewers and tunnels, were in the development stage in 2004.
The Sanipor® (flood grouting) technology is considered to be an innovative
method aimed at complete rehabilitation of an entire conveyance system section,
including manholes. This technology is also described in Chapter 3 as it applies
to small-diameter sewers and laterals.
An evaluation of the innovative technologies identified for manholes is presented
in Figure 4.1. Summary sheets for each innovative and embryonic technology
are provided at the end of this chapter.
Conveyance Systems
4-1
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Table 4.1 Manhole Technologies - State of Development
CD
£
CD
n
CD
en
Established
Cured-in-Place I
Flexible Sealant
Frame Adjustments (raise/reset)
Joint Sealing - Cementitious Grout
Joint Sealing - Epoxy Grout/Patching
Lid (cover) Inserts
Mechanical Chimney Seals (interior & exterior)
Plastic Composite Invert System
Poured-in-Place Concrete Liners
Replacement (via excavation)
Spray or Trowel-Applied Cementitious Lining
Spray or Trowel-Applied Polymer Coating
Innovative
Fiberglass Rehabilitation Manholes
HOPE Frame Adjustment Rings
Mechanical Joint Seals
Polyethylene Chimney Form
Sanipor® Technology (fill and drain)
Sewer Odor and Corrsion Control Insert
Embryonic
Glass-Reinforced Plastic (GRP) Insert
c_
c
fO
o
o
O5
-------
Figure 4.1 Evaluation of Mahole Innovative Technologies
c_
C
( '!
o
O5
Fiberglass Rehabilitation Manholes
HOPE Frame Adjustment Rings
Mechanical Joint Seals
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^H
Polyethylene Chimney Form
L BCI OIR © V
Sanipor® Technology
Sewer Odor and Corrosion Control Insert
A A As compared with manhole reolacer
,s compared with concrete adjustment rings
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^H
L BC I © V A © As compared to cementitious patching
compared with concrete adjustment rings
LBCI I AAAAAs compared with manhole replacement
LSBC 0 A ©©A
CD
tn
-------
Emerging Technologies
JULY 2006
Technology Summary
Fiberglass Rehabilitation Manholes
Objective:
To provide a structural barrier within existing
manholes.
State of Development: Innovative
Description:
Fiberglass Rehabilitation Manholes are made to be installed within existing concrete, brick, or precast
manholes to provide a non-corrosive structural barrier to prevent infiltration and exfiltration. A unit is
constructed of glass-fiber reinforcements, supplier-certified unsaturated isophthalic polyester resin, and
chemically enhanced silica. Flowtite® is able to withstand 16,000 pound vertical load. Manufactured as one
integral piece up to 25 feet deep.
Available Cost Information:
Approximate Capital Cost: $400 per vertical foot installed cost for a 4-foot-diameter, 10-foot-deep man-
hole
Approximate O&MCosts: Periodic visual inspections recommended
Vendor Name(s):
Containment Solutions, Inc.
Conroe, TX
www.containmentsolutions.com
Practitioner(s):
King County, Washington
Wastewater Treatment Division
201 S. Jackson St., Suite 505
Seattle, WA 98104
Key Words for Internet Search:
Fiberglass manholes, rehabilitation, Flowtite, glass-fiber reinforced
Data Sources:
www.containmentsolutions.com
Simicevic, J. "Currently Available Products and Techniques for Manhole Rehabilitation." Trenchless
Technology Center, Ruston, LA (www.I atech. ed u/tech/coes)
King County Department of Natural Resources and Parks, Wastewater Treatment Division. Pilot Project
Report, Regional Infiltration and Inflow Control Program, King County, WA (October 2004)
Jason Consultants International, Inc. New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology. Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
4-4
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
HOPE Frame Adjustment Rings
Objective:
Eliminate manhole chimney degradation
by replacing cracked concrete rings with
high-density polyethylene rings.
State of Development: Innovative
Description:
HOPE lightweight-grade rings provide structure and maintain material quality to eliminate degradation in
manhole chimneys. They are designed to be an alternative to replacing concrete rings that are damaged.
They are a mortarless system allowing fast assembly. HOPE rings are lighter, safer to handle and eliminate
the need for heavy equipment to install. Properly installed rings provide a watertight seal to control I/I.
HOPE rings are made of 100% recycled plastic.
Available Cost Information:
Approximate Capital Cost: $18-$25 each for standard 1.25- to 2-inch deep, round adjustment rings;
$35-$42 each for 4-inch deep, round, adjustment rings;
$23-$24 each for standard catch basin adjustment rings.
Approximate O&MCosts: Periodic visual inspections recommended.
Round manhole adjustment rings are available in the following inside diam-
eter sizes: 24-, 27-, 30-, 32-, and 34-inch.
Catch basin adjustment rings are either 24- by 36-inch or 24- by 24-inch
Grade adjustment rings are available with either a flat or sloped design and
are manufactured to ASTM D4976.
Vendor Name(s):
Ladtech, Inc.
6704 Meadowlark Court
Lino Lakes, MN 55038
Phone: 651-415-1252
Fax: 651-415-1090
www.ladtech.com
Practitioner(s):
South Tahoe Public Utility District
Lake Tahoe, CA
City of Houston
Houston, TX
Key Words for Internet Search:
HOPE adjustment, rings, manhole, seals, sewer, frame
Data Sources:
"Plastic Manhole Adjustment Rings Improve the Quality of Sanitary and Storm Sewers" Water Engineering
& Management (www.waterem.com)
Vendor-supplied information
Conveyance Systems
4-5
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Emerging Technologies
JULY 2006
Technology Summary
Mechanical Joint Seals
Objective:
A watertight rubber seal compressed against
the inside of the frame and cone by expansion
bands.
State of Development: Innovative
Description:
Several rubber seal products are available as internal sealing systems for stopping leakage in precast
manhole joints. CretexWrap involves a flexible rubber sleeve that has multiple pleats that can be expanded
into place. The top and bottom section of the sleeve compresses against the manhole producing a water
tight seal. FlexRib seal is made from a rubber compound that seals the manhole when stainless steel
expansion bands compress the rubber against the inside of the frame and cones.
Available Cost Information:
Approximate Capital Cost: $400 per one 48-inch-diameter seal
Approximate O&M Costs: Periodic visual inspections recommended
Vendor Name(s):
NPC, Inc.
Milford, NH
www.npc.com
Practitioner(s):
City of New Berlin
Utiities Division
3805 S. Casper Drive
New Berlin, Wl 53151
Key Words for Internet Search:
Mechanical joint connections, joint seals, manholes, sewer, barrel
Data Sources:
Simicevic, J. "Currently Available Products and Techniques for Manhole Rehabilitation." Trenchless
Technology Center, Ruston, LA (www.Iatech.edu/tech/coes)
4-6
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Polyethylene Chimney For
Objective:
Eliminate water entering the manhole through
the grade rings.
State of Development: Innovative
Patent by manufacturer still pending. Currently in use
by 40 municipalities across the United States.
Description:
The Polyethylene Chimney Form is a molded polymer shield that is incorporated into the chimney section of
a manhole assembly. The Polyethylene Chimney Form protects the manhole against inflow and infiltration
of groundwater, storm water, and eroded soil, effectively preventing clean material from entering the
collection system.
Available Cost Information:
Approximate Capital Cost: Retails for $110 - $120 depending on size
Approximate O&M Costs: None
Vendor Name(s):
Strike Products
31785 64th Ave.
Cannon Falls, MN 55009
Phone: 800-262-4129
Fax: 507-263-4891
Email: tool@striketool.com
www.striketool.com
Practitioners):
National Water Works
200 West Highway 6, Suite 620
Waco, TX 76712
Key Words for Internet Search:
Chimney seals, polyethylene, manholes
Data Sources:
www.striketool.com
King County Department of Natural Resources and Parks, Wastewater Treatment Division. Pilot Project
Report, Regional Infiltration and Inflow Control Program, King County, WA (October 2004)
Vendor-supplied information
Conveyance Systems
4-7
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Emerging Technologies
JULY 2006
Technology Summary
Sanipor® Technology (fill and drain)
Objective:
Nonstructural rehabilitation of laterals, manholes
and mainlines by sealing to prevent leaking
and/or infiltration.
State of Development: Innovative
Although it has only been used in the United States
over the past year, Sanipor® Technology has been used
in Europe for over 10 years. In Germany, Sanipor®
Technology has been used and has had positive
results.
Description:
Repairs systems using two liquids (S-1 and S-2). After cleaning and closing off the main pipe, S-1 solution
is pumped into the system. S-1 solution is able to get into the surrounding soil through leaking points. S-1
is pumped out after approximately an hour and S-2 solution is pumped in. S-2 will also get through the leak
points and into the surrounding soil, where it mixes with S-1 and forms a conglomerate-like solution that
seals the leak points. S-2 is pumped out after an hour and the line is then flushed clean and reconnected to
the system.
Available Cost Information:
Approximate Capital Cost: $3,600/day (equipment and crew); $17.99/gallon (S-2 solution)
Approximate O&M Costs: Unknown
Vendor Name(s):
AKZO Nobel EKA Chemicals
Marietta, GA
Sanipor®
Feldkirchen, Germany
www.sanipor.de/sanipor.htm
Practitioner(s):
Lafayette Utilities Systems
1314 Walker Road
Lafayette, LA 70501
Key Words for Internet Search:
Sanipor®, no dig, manhole renovation, coatings, flood grouting
Data Sources:
Case Study-Sanipor Pilot 2003 in Lafayette, LA (https://www.latech.edu/tech/engr/ttc/werf/)
Telephone conversation with Jadranka Simicevic (Trenchless Technology Center)
jandranka@coes.latech.edu
Jason Consultants International, Inc. New Pipes for Old: A Study of Recent Advances in Sewer Pipe
Materials and Technology. Alexandria, VA. Water Environment Research Foundation (WERF) (2000)
4-8
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Sewer Odor and Corrosion Control Inserts
Objective:
Prevent the release of odorous gases in drop
manholes and force main discharges to sewer
manholes.
State of Development: Innovative
This technology has been available since 1998 but only
recently has been used in approximately 30 locations.
Description:
Patented by IPEX Inc., the spiral flow design of the vortex flow pulls odorous air downward towards the
bottom of the structure. The entrained air raises the dissolved oxygen (DO) in the sewage and is able to
partially oxidize the reduced gases in solution in the sewage. Because the process operates at a slight
vacuum, odorous gases are not released from the liquid. The system requires a drop in elevation of at least
6 feet for the process to work correctly.
Available Cost Information:
Approximate Capital Cost: $5,000 plus $2,000 for each million gallons per day capacity
Approximate O&MCosts: $0 - unit is self-cleaning
The approximate capital cost of the unit is based on its size as each unit is custom fabricated for a given
flow and drop height.
Vendor Name(s):
IPEX, Inc.
2441 Royal Windsor Drive
Mississauga, Ontario J5J 407
Canada
Phone: 800-463-9572
Fax: 905-403-9195
E-mail: ricsta@ipexinc.com
Practitioner(s):
Rummel, Klepper & Kahl, LLP
81 Mosher Street
Baltimore, MD 21217
Key Words for Internet Search:
Odor, corrosion, control, manholes, sewer, inserts, vortex, flow
Data Sources:
Vendor-supplied information
Conveyance Systems
4-9
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Emerging Technologies
JULY 2006
Technology Summary
Glass-Reinforced Plastic (GRP) Inserts
Objective:
Structural rehabilitation of brick and precast
manholes.
State of Development: Embryonic
This technology is in the laboratory development stage.
Description:
Fiber reinforced, filled, thermoset resin manhole inserts are custom designed to be installed in manholes
of various diameters and depths. The installation procedure includes excavating the existing manhole to a
depth that facilitates removal of the frame and cone (or corbel). The new glass-reinforced plastic manhole
insert is placed within the existing manhole barrel and the annular space between the two is filled with
grout. The invert and bench are reformed and the rehabilitated manhole is backfilled to complete the
installation.
Available Cost Information:
Approximate Capital Cost: Unknown
Approximate O&M Costs: Periodic visual inspections recommended.
As of publication date, capital cost data was not available for this embryonic technology. It is anticipated
that GRP manhole inserts will be comparable in price to fiberglass manhole inserts.
Vendor Name(s):
Insituform Technologies, Inc.
17999 Edison Avenue
Chesterfield, MO 63005
Phone: 636-530-8000
Fax: 636-530-8744
E-mail: losborne@insituform.com
Practitioner(s):
See website for practitioners/case studies:
http://www.amitechuse.com/studies.htm
Key Words for Internet Search:
Glass-reinforced plastics, panel, pipe, manholes
Data Sources:
Vendor-supplied information
4-10
Conveyance Systems
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Conveyance Systems Management
5.1 Introduction
Conveyance systems management includes two distinct types of management tools. Any
technological tool that can be used for asset management purposes to track maintenance
and inspection records, complaint and emergency response efforts, and utility information
can be considered a conveyance system management tool. On the other end of the
spectrum, a program, public outreach effort, or regional collaboration that has been
established to assist in the decision-making process and planning for a given conveyance
system has also been classified as a conveyance system management tool. Both of these
identified conveyance systems management tools have the same goal, which is to reduce
operation and maintenance efforts, and in turn costs, through effective planning.
5.2 Technology Assessment
With the release of the Governmental Accounting Standards Board (GASB) Statement
No. 34 in June 1999, many municipalities have begun to focus on the importance of
proper asset management, including utilities such as conveyance systems. Many of
the technologies associated with conveyance systems management have been newly
developed and can be considered innovative, including programs that broaden the use of
geographic information system (CIS) for municipal applications. Others, such as proactive
sewer maintenance program and public outreach on the impact of fats, oils, and grease
(FOG), are well established, but may be underutilized on a national scale.
The state of development of conveyance system management technologies is summarized
in Table 5.1. An evaluation of the innovative technologies identified is presented in Figure
5.1. Summary sheets for each innovative technology are provided at the end of this
chapter.
Conveyance Systems
5-1
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V
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Table 5.1 Conveyance System Management Technologies - State of Development
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Established
Innovative
Embryonic
r
I
Public Outreach on Fats, Oils, and Grease (FOG)
Sewer Maintenance Program
ESRI-Based One-Call Ticket Management
Mobile GIS
Regional I/I Control Program
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Figure 5.1 Evaluation of Conveyance System Management Innovative Technologies
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ESRI-Based One-Call Ticket Management
Mobile GIS
Regional I/I Control Prog
ICB M 0
L ICB M 0 A A V
State of Development
KEY
D = Demonstration project
L = Limited municipal installations
I = Full-scale industrial applications, with potential
0= Full-scale operations overseas
N= Full-scale operations in North America
Applicability
I = Industrial
S = Municipal sanitary
T = Municipal storm
C= Municipal combined
for application in municipal conveyance systems B = Municipal sanitary and storm R= Restored structural integrity
Potential Benefits
C= Capital savings
0= Operational/maintenance savings
I = Inflow/infiltration reduction
S = SSO/CSO reduction
M= Improved maintenance tracking/manage-
ment
Comparative Criteria
A Positive feature
© Neutral or mixed
V Negative feature
CD
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Emerging Technologies
JULY 2006
Technology Summary
ESRI-Based One-Call Ticket
Objective:
Managing the process of determining and
validating the One-Call sites for buried or
underground infrastructure
State of Development: Innovative
One-call ticket management is an established
technology; however, one new product is compatible
with Environmental Systems Research Institute (ESRI),
a leading GIS software developer. The Dig-Smart
Program has been available for approximately one
year. There are six municipalities in New York State
currently utilizing the technology, and the program has
also been used in CA.
Description:
Dig-Smart works in conjunction with Arc View GIS program. It provides an automated process to locate
areas on incoming One-Call ticket numbers. It determines if the area is near buried underground utilities
based on GIS date. Dig-Smart will automatically use this data to determine if a stake-out is required. Using
GIS, this program will create a map with the geographic location of the ticket number and route the ticket
number(s) to the proper utility companies where physical stake-outs are needed and automatically generate
work orders. ESRI-based one-call ticket management software is compatible with programs currently
mandated in all 50 states.
Available Cost Information:
Approximate Capital Costs:
Approximate O&M Costs:
Dig Smart (professional) = $3,000 per license
Dig-Smart (Enterprise) = $9,000 primary license with $3,000 for each second-
ary license
$500-$1,200 per year, based upon the type of license purchased (this in-
cludes technical support as well as upgrade services).
Vendor Name(s):
Bergmann Associates P.O.
40 La Riviere Drive
Waterfront Village Center
Buffalo, NY 14202
Phone:71-852-3211
www.dig-smart.com
Practitioner(s):
Monroe County Environmental Services
50 West Main Street, Suite 7100
Rochester, NY 14614
Key Words for Internet Search:
Automated mapping, utilities GIS, Dig-Smart
Data Sources:
Schenkel, P., and J. Schoenberg. "Monroe County, New York, Maximizes Dig-Smart and the Enterprise GIS
for Complete Ticket Management." ESRI Water Writes (Winter 2004)
Vendor-supplied information
5-4
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Objective:
Maintains up-to-date records of systems integrity
in a system that is installed on the palm pilot
and allows the user(s) to create database
applications (i.e. routine sewer inspection
checklist).
State of Development: Innovative
The program itself has been around for approximately 5
years but only recently been used in the industry.
Description:
The program tool installed on a mobile device, such as a palm pilot, allows personnel to link data
collected in the field to authorities using GIS programs. At the end of each day, the information collected is
downloaded to a central computer. From there, the information is shared with all department authorities as
well as persons involved in work on the system itself. The mobile device can be very cost effective and is
primarily used for simple tasks, such as routine maintenance inspections.
Available Cost Information:
Approximate Capital Cost: -$12,000 for palm pilots, applications, and Pen Dragon Program
Approximate O&M Costs: Capital costs include O&M costs
Note: Palm pilots cost approximately $50 to $60 each, which allows for variability of capital costs due to the
number of palm pilots needed for a project. Pen Dragon costs approximately $2,000 and the application to
run Pen Dragon is about $7,000.
Vendor Name(s):
Pendragon Software Corporation
1580 S. Milwaukee Ave., Suite 515
Libertyville, IL 60048
Practitioner(s):
Clayton County Water Authority
1600 Battle Creek Road
Morrow, GA 30260
Email: BTaylor@ccwal.com
Key Words for Internet Search:
Palm pilot software, GIS, handheld devices
Data Sources:
"CCWA Using New Technology to Inspect System Pipes." Water & Wastes Digest. 44 (August 2004)
Bey, G., G Ramon, C. Stern. "Empowering Utility Field Crews With a Mobile GIS and Field Service
Management System." ESRI
Vendor-supplied information
Conveyance Systems
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Emerging Technologies
JULY 2006
Technology Summary
Regional I/I Program
Objective:
Quantify, locate and assess the most cost effective
measures and infiltration and inflow goals that
should be pursued by a given region.
State of Development: Innovative
King County, WA, is taking a unique regional
approach to I/I control. A report summarizing the
results of the 10 pilot I/I control projects was made
available to the public in October 2004.
Description:
Regional Infiltration/Inflow (I/I) Control Program is based on a cooperative partnership between King County
and 32 local component agencies. The six-year program included flow monitoring at over 800 locations
to identify I/I in the overall system, ten pilot I/I control projects utilizing different rehabilitation techniques,
evaluating financial options and solutions, and design of a long-term control program for the local agencies
and the County. The program is aimed at reducing I/I in the County's wastewater conveyance interceptors
and treatment facilities as well as local agency collection systems.
Available Cost Information:
Approximate Capital Cost: Pilot project construction cost: $7.8 million
Approximate O&M Costs: Pilot project total cost: $12 million
The pilot project total cost includes costs for construction, sewer system-evaluation study (SSES), design,
pre- and post-rehabilitation flow monitoring, construction management, modeling and analysis. A reduction
in I/I was observed as a result of eight of the ten pilot sanitary sewer rehabilitation construction projects
undertaken. Through the program, the County successfully demonstrated that I/I cana be identified,located,
and reduced through collection system monitoring and rehabilitation, as well as strong communication
between public and private stakeholders.
Vendor Name(s):
Not applicable
Practitioner(s):
King County
Department of Natural Resources and
Parks
Wastewater Treatment Division
201 S. Jackson St., Suite 505
Seattle, WA 98104-3184
Phone: 206-263-3184
Fax: 206-684-1741
E-mail: mary.lundt@metrokc.gov
Key Words for Internet Search:
Infiltration/inflow, I/I control program, sewer program
Data Sources:
Telephone communication with Mary Lundt, King County (15 September 2004)
http://dnr.metrokc.gov/wtd/i-i
Bergstrom, E., P.E., B. Swarner, P.E., and M. Lopez, PE. "Infiltration and Inflow (I/I) Reduction in 10 Pilot
Projects, King County, WA," Proceedings of the Water Environment Federation Collection Systems 2005
Conference, Sustaining Aging Infrastructure: System, Workforce and Funding (CD-ROM), Boston, MA
(17-20 July 2005)
King County Department of Natural Resources and Parks, Wastewater Treatment Division. Pilot Project
Report, Regional Infiltration and Inflow Control Program, King County, WA (October 2004)
5-6
Conveyance Systems
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Capacity Restoration
6.1 Introduction
Capacity restoration refers to removing blockages, excess flow, or any hindrances that
restrict flow through a conveyance system. Flow restrictions often are the cause of sanitary
and combined sewer overflows.
6.2 Technology Assessment
A summary of innovative, emerging, and established technologies for capacity restoration
is provided in Table 6.1. Capacity restoration can be achieved by implementing structural
best management practices to prevent debris grit and excess flow from entering a
conveyance system; conducting regular cleaning of the sewer system; and identifying
and removing any illicit connections to a conveyance system that would contribute excess
flow, such as roof drains, footer drains, basement sump pumps, and storm/sanitary sewer
interconnections.
Many of the capacity restoration techniques listed in Table 6.1 are well established for
municipal and industrial use. However, four technologies considered to be innovative
or embryonic, were identified. These include an in-line grit removal system for use with
bridge stormwater collection systems, and two new cleaning techniques for conveyance
systems. An evaluation of the one innovative technology identified is also provided in
Figure 6.1.
Summary sheets for each innovative and embryonic technology are provided at the end
of this chapter.
Conveyance Systems
6-1
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C9
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Table 6.1 Capacity Restoration Technologies—State of Development
CD
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Established
Basement Sump Pump Redirection
Foundation/Footer Drain Redirection
Interconnection Elimination
Roof Drain Redirection
Root Removal and Control
Storm Water Infiltration Pumps
Innovative
Above-Grade Grit Removal System (Bridge applications)
HDD Attachments for Culvert Cleaning
Pigging (force main cleaning)
Embryonic
Culvert Cleaning System
CD
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Figure 6.1 Evaluation of Capacity Restoration Innovative Technologies
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Above-Grade Grit Removal System
HDD Attachments for Culvert Cleaning
Pigging (force main cleaning)
JOS 0 A A A
S 0 A N/A N/A
s e
State of Development
KEY
D= Demonstration project
L = Limited municipal installations
I = Full-scale industrial applications, with potential
0= Full-scale operations overseas
N= Full-scale operations in North America
Applicability
I = Industrial
S = Municipal sanitary
T = Municipal storm
C= Municipal combined
for application in municipal conveyance systems B = Municipal sanitary and storm R= Restored structural integrity
Potential Benefits
C= Capital savings
0= Operational/maintenance savings
I = Inflow/infiltration reduction
S = SSO/CSO reduction
/!= Improved maintenance tracking/manage-
ment
Comparative Criteria
A Positive feature
© Neutral or mixed
V Negative feature
CD
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Emerging Technologies
JULY 2006
Technology Summary
Above-Grade Grit Removal Sys'
Objective:
Simplify maintenance activities and minimize
maintenance costs by preventing excess sand
and debris from entering and clogging an
existing storm water system.
State of Development: Innovative
One full-scale above-grade grit removal system has
been installed on the Peace Bridge, the international
border crossing between Buffalo, New York, and Fort
Erie, Ontario.
Description:
The above-grade grit removal system consists of an above grade grit trap unit; concrete pad and curbing
for overflow containment; and a deep catch basin that are designed to receive flows from a bridge scupper
drain system. The grit trap unit is a standard roll-off container with a removable tarp cover. A square hole in
the cover allows water to enter the container from the bridge deck above. Storm water flows to the front end
of the grit trap, where it passes through a filter screen and is discharged to the catch basin through a series
of outlets, attached to a watertight access door.
Available Cost Information:
Approximate Capital Cost: Under $10,000 for fabricated 20 cubic foot grit trap unit.
Approximate O&M Costs: Under $200 annually (assuming one cleaning per year)
The O&M Costs include labor, hauling costs, and disposal at landfill. Annual costs may vary based on
classification of sediment material at landfill and municipal labor rates.
Vendor Name(s):
Parsons
180 Lawrence Bell Drive, Suite 104
Williamsville, NY 14221
Phone: 716-633-7074
Fax: 716-633-7195
E-mail: jaime.davidson@parsons.com
Practitioner(s):
Buffalo and Fort Erie Public Bridge Authority
One Peace Bridge Plaza
Buffalo, NY 14213
KeyWords for Internet Search:
Grit removal system, above grade, Peace Bridge
Data Sources:
Practitioner-supplied information
6-4
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
HDD Attachments for Culvert Cleaning
Objective:
Remove soil and debris from culverts without
damage to the culvert or need for replacement of
the structure.
State of Development: Innovative
Now considered recently established, as work has been
done in over 800 municipalities. Recently patented
horizontal directional drilling (HDD) attachment. As of
5/2005,160 units sold to clean nearly 1,800 culverts in
38 states.
Description:
The first attachment in the patented process is a barrel reamer, a round tool with fins and water jets. The
barrel reamer rotates through the pipe, mixing water with the debris. The tool also allows the operator to
assess the integrity of the pipe and the type of debris. After the barrel reamer, operators attach either a
push bucket or pull bucket, to move the material and dispose of it properly. Square box buckets are also
available. The barrel reamers are strong enough to cut through tree roots and move large rocks. A brush
attachment is also available to fine clean the culvert. Attachment sizes accommodate between 6 and 110
inch culverts. The attachments provide the advantage of a controlled environment by allowing the push or
pull of debris, that may be contaminated, away from sensitive areas such as streams or creeks.
Available Cost Information:
Approximate Capital Cost: Proprietary equipment not for public sale. Cleaning services typically subcon-
tracted.
Approximate O&MCosts: $1/diameter-inch/LF for cleaning by a licensed contractor
Note: For example, a 18-inch-diameter pipe would cost $18/LF to clean. Horizontal direction drilling (HDD)
machines are also required. As with most costs, this is subject to change based on the type of material
being removed (i.e. silt, rock, vegetation, broken pipe material, etc.), whether or not contamination is
present, accessibility issues, etc.
Vendor Name(s):
Harr Technologies, LLC
Mosca, CO
Phone: 719-523-4090
Practitioner(s):
See website for practitioners/case studies:
http://www.harrtech.com/culvertcleaning.aspx
Key Words for Internet Search:
Culvert cleaning, pipe cleaning, horizontal directional drilling, attachments, nozzles
Data Sources:
Deering, Tara. "Attachments for HDD Machines" Rocky Mountain Construction
Vendor-supplied information
Conveyance Systems
6-5
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Emerging Technologies
JULY 2006
Technology Summary
Pigging (Force Main Cleaning)
Objective:
Cleaning, confirmation of pipeline integrity,
increasing carry capacity, reduce pumping
pressure required to maintain flow.
State of Development: Innovative
Although pigging has been around over 30 years,
for natural gas and petroleum pipes, pigs have only
recently been used in application for the wastewater
systems industry.
Description:
A pipeline pig acts like a free moving piston inside the pipeline by sealing against the inside wall with a
number of sealing elements. Pigs perform numerous tasks including cleaning debris from the line and
removing residuals. This method begins by inserting various size, shape, texture, and/or density pigs into
a launch that is either attached to the existing system or installed new. The diameter, texture, and density
increase with each pass of the pig (also referred to as "progressive pigging") as several pigs are used.
When launched, the pig is pushed through the system with a differential pressure that is greater than the
pressure in front of the pig. The pig is ejected out the other end of the system leaving a clean pipe behind.
Available Cost Information:
Approximate Capital Cost:
Approximate O&M Costs:
Ranges from $2,000 and up for installation of an 8-inch-diameter launcher
plus the cost of a Y connection and Y valve.
$23 per each 8-inch-diameter B-1/G-1 pig. Subcontractor cleaning cost
ranges from $1 - $5 per foot depending on pipe length.
Costs for pigging are extremely variable based on pipe material, pipe diameter, and the material being
cleaned (i.e. biological scaling, iron scaling).
Vendor Name(s):
Pipeline Pigging Products
P.O. Box 690052
Houston, TX 77269
Practitioner(s):
Montauk Services, Inc.
84A Johnson Avenue
Hackensack, NJ 07601
Key Words for Internet Search:
Pipeline pigging, industrial pipe, pig cleaning services, wastewater
Data Sources:
Vendor-supplied information
6-6
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Culvert Cleaning Syst
Objective:
Cleans culverts and vacuums emulsified material
simultaneously.
State of Development: Embryonic
This technology has been around for less than one year
and is still in the research and development stages.
Description:
A vacuum unit with variable sized cleaning tools with dual rotating nozzles that are constantly moving is
used. This unit is extended into the culvert pipe. A rubber boot at the bottom assists with pushing debris
while maintaining contact with the pipe. While this is running the vacuum sucks debris and stores it in a
tank for later disposal.
Available Cost Information:
Approximate Capital Cost: $14,500 - $17,000
Approximate O&M Costs: Unknown
Costs are dependent upon auger system and accessories.
Vendor Name(s):
Ring-0-Matic Manufacturers, Inc.
P.O. Box 305
Pella, IA 50219
Email: infor@ringomatic.com
Practitioner(s):
Oklahoma Department of Transportation
2800 South 32nd Street
Muskogee, OK 74401
Key Words for Internet Search:
Culvert cleaning, pipe cleaning, vacuum, culvert maintenance
Data Sources:
Vendor-supplied information
Conveyance Systems
6-7
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Emerging Technologies JULY 2006
6-8 Conveyance Systems
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Conveyance System Assessment
7.1 Introduction
This chapter focuses on any technique or tool that is used to monitor, assess, and/or
evaluate the condition of an existing conveyance system.
7.2 Technology Assessment
Being able to fully understand and monitor the condition of an existing system is critical
to developing an appropriate maintenance program and to ensuring the integrity of an
entire conveyance system. A summary of the state of development of conveyance system
assessment technologies is provided in Table 7.1.
Conveyance systems evaluation technologies are continuously emerging as technological
advancements are made. For example, systems are available for use in the field that can
provide an accurate picture of the structural integrity and flow characteristics of a given
pipe. Soon, this equipment will be permanently embedded into conveyance systems
components, termed "smart infrastructure," and will be capable of alerting a technician at
a remote location of any critical structural failures or flow hindrances.
Figure 7.1 includes an evaluation of the innovative technologies identified. Summary
sheets for each innovative and embryonic technology are provided at the end of this
chapter.
Conveyance Systems
7-1
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hi
Table 7.1 Conveyance System Assessment Technologies - State of Development
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Established
Closed-Circuit Television Inspection
Digital Camera Inspection (mobile)
Ground-Penetrating Radar
Innovative
Digital Camera Inspection (mounted)
FELL (Focused Electrode Leak Locator)
Electro-Scanning
Laser Profiling/3D Scanning,/Sonar
Sewer Scanner and Evaluation Technology
(SSET)
TISCIT (Totally Integrated Sonar & CCTV
Integrated Technique)
Wireless Monitoring Systems
Embryonic
Pipe Mechanical/Structural Reliability Analysis
Smart Sewer Assessment Systems
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Figure 7.1 Evaluation of Conveyance System Assessment Innovative Technologies
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Digital Camera Inspection
FELL (Focused Electrode Leak Locator
Laser Profiling/30 Scanning/Sonar
Sewer Scanner and Evaluation Technolog
ireiess monitoring system
State of Development
Demonstration project
Limited municipal installations
Full-scale industrial applications, with potential for
application in municipal conveyance systems
Full-scale operations overseas
"" ™le operations in North America
Applicability
:ry and storm
Potential Benefits
C = Capital savings
0 = Operational/maintenance savings
I = Inflow/infiltration reduction
S = SSO/CSO reduction
R = Restored structural integrity
M = Improved maintenance tracking/managerr
Comparative Criteria
\leutral or mixed
CD
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Emerging Technologies
JULY 2006
Technology Summary
Digital Camera Inspe
Objective:
Screen and prioritize cleaning, more detailed
inspection and repairs to manholes, storm
sewers, and sanitary sewers.
State of Development: Innovative
Service provided for municipalities in six states on the
East Coast and 10 Indian Reservations.
Description:
The AquaZoom diagnostic camera is equipped with a tele-objective zoom lens used to gather information
about the condition of storm water and wastewater collection systems. Manholes and pipes are inspected
from the surface level, eliminating the risk and cost of confined space entry. The AquaZoom camera will
pan 360° as it is lowered from street level for manhole inspection and view up to 75 feet in a 6-inch pipe
segment and up to 700 feet for larger diameter pipelines.
Available Cost Information:
Approximate Capital Cost: I nspection and analysis services typically subcontracted
Approximate O&MCosts: Video Inspection: $35/manhole and $115/pipe
Diagnosis: $50/manhole and $125/pipe segment
Diagnosis includes viewing, rating, and ranking the operational and structural condition of each manhole
and pipe segment.
Vendor Name(s):
InfoMetrix, LLC
500 Edgwater Drive, Suite 545
Wakefield, MA 01880
Phone: 781-245-4255
Fax: 781-245-5338
E-mail: info@Jnframetrix.com
ww.inframetrix.com
Practitioner(s):
Town of Tonawanda
Water Resources Department
Water and Sewer Maintenance Division
525 Belmont Avenue
Buffalo, NY 14223
Key Words for Internet Search:
Digital inspection camera, mounted, pipe, water, municipal equipment
Data Sources:
http://www.epa.gov/ne/assistance/ceit iti/tech cos/aquazoom.html
http://www.inframetrix.com/news.htmtfEPA
Lenz, M., PE. Sanitary Sewer Inspections Meet 21st Century Technology, presented at the New York Water
Environment Association Spring Technical Conference & Exhibition; Grand Island, NY
(6-8 June 2005)
7-4
Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
FELL (Focused Electrode Leak Locator) Ele
Objective:
Generate maps that identify pipe defects and
can be used to better assess infiltration/inflow
(I/I) sources and amounts.
State of Development: Innovative
Description:
An electric current is used to determine the defects in the pipe that will be used to estimate I/I whether it is
occurring at the time the inspection takes place or not. The electric current transfers data to an input device
by measuring an electrical current flow between a probe that travels in the pipe and a surface electrode.
Defects in the pipe cause a spike in the electrical signal because of the increase in conductivity where
leaks may occur. Electro-scanning only works on nonconductive pipe and can be used for inspection of
new sanitary sewer construction or for I/I assessments. Data results will identify size of defect and relative
flow contribution.
Available Cost Information:
Approximate Capital Cost: Inspection and analysis services typically subcontracted
Approximate O&M Costs: $1-$3 per linear foot; $2-$6 per lateral 25-100 feet
Costs are highly dependent on size of pipe, accessibility to manholes, and other project specifics.
Vendor Name(s):
Metrotech
488 Tasman Drive
Sunnyvale, CA 94089
Practitioner(s):
See website for case studies
www.fell41.com
Key Words for Internet Search:
Electro-Scanning, FELL (Focused Electrode Leak Locator)
Data Sources:
Lenz, M., RE. "Sanitary Sewer Inspections Meet 21st Century Technology," presented at the New York
Water Environment Association Spring Technical Conference & Exhibition; Grand Island, NY (6-8 June
2005)
Simicevic, Jadranka, Raymond L. Sterling, Ahmad Habibian, Rick Nelson, Roger L. Tarbutton, and Alan
Johnson. "Methods for Cost-Effective Rehabilitation of Private Lateral Sewers," Water Environment
Research Foundation (WERF) (2006)
Vendor-supplied information
Conveyance Systems
7-5
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Emerging Technologies
JULY 2006
Technology Summary
Laser Profilin
Objective:
Identifies actual pipe conditions, structural
shape, deformations, deflections, and debris
accumulation from internal measurements.
State of Development: Innovative
Description:
The actual condition of the pipe is revealed by supplying data relating to the exact shape of the conduit,
the magnitude, length, and location of deformations, location and position of laterals, and the area and
perimeter of conduits' cross sectional areas. This data is collected by sending a laser generated source
to the interior of a pipe and sending and receiving frequent data points. Sonar profiling is possible in wet
areas and therefore is used in inspections of siphons and submerged/surcharged pipe. Laser profiling is
performed with a point or line laser and may be enhanced with a technology including a rotating laser. The
rotating laser collects a 360 degree view of the pipe to build a 3D virtual pipe model.
Available Cost Information:
Approximate Capital Cost: Inspection and analysis services typically subcontracted
Approximate O&M Costs: $2-$3 per linear foot.
The addition of the technology allowing 360-degree view of the pipe with laser profiling will increase costs
to an estimated $10-$20 per linear foot.
Vendor Name(s):
Hydromax, USALLC
1766 Brent Drive
Newburgh, IN 47630
Practitioner(s):
Redzone Robotics
www.redzone.com
Key Words for Internet Search:
Laser Profiling, Sewer, Pipe Profiling, 3D Scanning, Sonar
Data Sources!
Lenz, M., PE. "Sanitary Sewer Inspections Meet 21st Century Technology," presented at the New York
Water Environment Association Spring Technical Conference & Exhibition; Grand Island, NY.
(6-8 June 2005)
Vendor-supplied information
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Conveyance Systems
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JULY 2006
Emerging Technologies
Technology Summary
Sewer Scanner and Evaluation Technology (SSET)
Objective:
Inspect sewer lines using optical scanners and
gyroscope technology.
State of Development: Innovative
SSET has been implemented in 20-35 cities throughout
the United States.
Description:
This system scans and digitizes in forward direction and the total surface of the sewers that can be used to
generate color coded computer images. This helps in getting better quality of images that can be magnified
and viewed to assess the damage on the pipelines.
Available Cost Information:
Approximate Capital Cost: $80,000 system
Approximate O&M Costs: $4,000/week for data acquisition plus $200,000 for data analysis
The SSET system cost does not include the cost of the vehicle that carries the system.
Vendor Name(s):
Hydromax USA
9921 Spring Ridge Drive
Louisville, KY 40223
Practitioner(s):
See website for case studies
www.hydromaxusa.com
Key Words for Internet Search:
Evaluation of SSET (Sewer Scanner and Evaluation Technology), digital diagnosis, sewer pipes
Data Sources:
Lenz, M., RE. "Sanitary Sewer Inspections Meet 21st Century Technology," presented at the New York Water
Environment Association Spring Technical Conference & Exhibition; Grand Island, NY (6-8 June 2005)
http://www.new-technologies.org/ECT/Civil/sset.htm
http://www.cerf.ora/ceitec/eval/onaoina/sset.htm
Vendor-supplied information
Conveyance Systems
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Emerging Technologies
JULY 2006
Technology Summary
TISCIT (Totally Integrated Sonar & CCTV Inspection Technique)
Objective:
To assess partially submerged pipes when
by-passing the flow is not possible by assessing
above and below the waterline.
State of Development: Innovative
Description:
A combination of CCTV (closed circuit television) and sonar technologies are used to assess the pipe above
and below the waterline. Sonar technology is operated with the high frequencies and rotating equipment to
allow a scan of the full wet perimeter of the sewer. Simultaneously, the CCTV equipment is retrieving images
producing information for the assessment of the structural and hydraulic conditions of the sewer.
Available Cost Information:
Approximate Capital Cost: Inspection and analysis services typically subcontracted.
Approximate O&MCosts: $2.50-$3 per linear foot
Vendor Name(s):
Future Amtec
http:\\fesuk.com
Practitioner(s):
City of August, GA
www.agustaga.gov/departments/utilities/current_projects.
asp
Key Words for Internet Search:
TISCIT, CCTV, sonar, trunk sewer, sewer maintenance, surcharged sewers
Data Sources:
Lenz, M., RE. "Sanitary Sewer Inspections Meet 21st Century Technology," presented at the New York Water
Environment Association Spring Technical Conference & Exhibition; Grand Island, NY (6-8 June 2005)
Andrews, M.E. RE. "Large Diameter Sewer Condition Assessment Using Combined Sonar and CCTV
Equipment," APWA International Public Works Congress, NRCC/CPWA Seminar Series: "Innovations in Urban
Infrastructure." Ottawa, Canada
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JULY 2006
Emerging Technologies
Technology Summary
Wireless Monitoring Systems
Objective:
Monitor and record data of combined sewer
overflows (CSOs) and santitary sewer overflows
(SSOs) in conveyance systems and lift stations.
State of Development: Innovative
This technology is currently in use by 25 municipalities
in the United States.
Description:
The SSO-33 is a compact recorder that is enclosed in a water-tight case and will monitor and document
CSO/SSO events in a conveyance system. Each event is recorded and stamped to show date, time, water
level and duration. A wireless communication setup relays recorded data for critical point monitoring. The R-
33 is a compact recorder that monitors the intermittent on/off operation of each pump and the flow through
a lift station. The total water flow of each recording period is used to document CSOs and SSOs.
Available Cost Information:
Approximate Capital Cost: $2,500 for an individual recorder
Approximate O&MCosts: Minimal
Capital cost is just for the recorder and does not include installation, which is done by the customer.
O&M cost is very low and includes battery replacement or cost of electrical utility.
Vendor Name(s):
Telog Industries, Inc.
830 Canning Parkway
Victor, NY 14564
Phone: 585-742-3000
Fax: 585-742-3006
http://www.telog.com
Practitioner(s):
Massachusetts Water Resource Authority
Charlestown Navy Yard
100 First Avenue
Boston, MA 02129
Key Words for Internet Search:
Monitoring system, sewer pipe, wireless, flow meter system, CSO, SSO
Data Sources:
http://www.teloa.com/downloads/Teloaers brochure ws.pdf
Vendor-supplied information
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Emerging Technologies
JULY 2006
Technology Summary
Pipe Mechanical/Structural Reliability Analysis
Objective:
Integrated mechanical-electronic system to
inspect different kinds of pipes.
State of Development: Embryonic
This technology is currently being used in France.
Description:
This technology (MAC system) assesses the reliability of the pipe by pipe-soil interactive structural
behavior. The mechanical component of the system applies nondestructive loads and measures the
displacement while the electronic component analyzes results.
Available Cost Information:
Approximate Capital Cost: Unknown
Approximate O&MCosts: Unknown
As of publication date, cost datea was not available for this embryonic technology.
Vendor Name(s):
None
Practitioner(s):
None
KeyWords for Internet Search:
Pipe structure evaluating system, structural reliability analysis, mechanical technologies
Data Sources:
http://www.new-technologies.org/ECT/Civil/pipeeval.htm
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JULY 2006
Emerging Technologies
Technology Summary
Smart Sewer Assessment Systems
Objective:
Use an automated system with artificial
intelligence to assess cracks and leaks on pipes.
State of Development: Embryonic
Description:
Three different kinds of the technology are available. The KARO system consists of three parts; a mobile
control, surveillance station and a mobile robot. The mobile robot has a 3D sensor, and ultra sonic sensor
and a microwave sensor for the inspection of pipes. The PIRAT system consists of a laser scanner for a
drained pipe and sonar scanner for flooded pipes. The TriScan system consists of a TV-system equipped
with a laser distance sensor.
Available Cost Information:
Approximate Capital Cost: Unknown.
Approximate O&MCosts: Unknown
These three systems are still prototypes and are not currently being manufactured. These systems were
experimental research and development projects that for one reason or another never got off the ground.
Vendor Name(s):
CSIRO Project Engineer
Locked Bag 9
Preston 3072 Australia
Phone: +61 3 9662-7756
Fax: +61 3 9662-7853
Email: robin.kirkham@csiro.au
Practitioner(s):
None
Key Words for Internet Search:
Emerging construction technology, smart sewer assessment, back-up prevention
Data Sources:
http://www.new-technologies.org/ECT/Civil/smartsew.htm
http://vision.cmit.csiro.au
http://www.optimess.com
Conveyance Systems
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Emerging Technologies JULY 2006
7-12 Conveyance Systems
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Chapter
Research Needs
8.1 Introduction
In order to reclassify any technology that is considered to be innovative or embryonic,
additional research and field demonstration projects are necessary. This chapter focuses
on specific technologies that may have a significant impact on conveyance system
construction rehabilitation and management and the relevant research needs in these
areas.
8.2 Research Needs
Many of the wastewater collection and conveyance systems in the country were built
more than 100 years ago. Maintenance, replacement, and rehabilitation practices during
the ensuing period have resulted in a patchwork of technologies in collection systems. In
order to adequately preserve the collection system infrastructure, protect the environment,
and accommodate growth, new and improved solutions and technologies for wastewater
collection systems are necessary.
Emerging and innovative technologies can provide more cost-efficient and effective
solutions to the problems associated with deteriorating wastewater collection systems.
Research and technical issues can be grouped into three areas: (1) assessment of system
integrity; (2) operation, maintenance, and rehabilitation; and (3) new construction.
Assessment of System Integrity
A thorough assessment of system integrity is based on flow monitoring and physical
condition assessment elements.
Flow Monitoring
The primary issues related to flow monitoring are accuracy and reliability. Improved
accuracy, or an indication of the error of measurement, are areas where research is
necessary.
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Emerging Technologies JULY 2005
Physical Condition Assessment
A thorough assessment of the physical condition of the collection system is critical to
maintain the integrity of the system. An assessment identifies structural features that may
require correction and establishes priorities for rehabilitation or replacement. Predicting
the likelihood of failure and the associated risk analysis are key elements of the evaluation.
The primary research issue associated with physical condition assessment is how to
effectively detect and locate defects and failures in the collection system. There is a need
to standardize and better define inspection procedures and techniques. Since nearly, all
inspection techniques depend on visual observations; interpretation of defect severity is
the greatest limitation.
There is a need to further evaluate emerging evaluation technologies to document
performance and cost under both controlled-condition testing and field testing for a variety
of system characteristics and components. There is also a need to investigate the concept
of "intelligent systems" for remote sensing and monitoring the structural integrity.
Current research needs involve the development of predictive tools or performance
indicators for measuring degradation of conveyance systems. The intent of this research
is to enable municipalities to identify areas for rehabilitation to strategically focus effort in
areas most likely to need attention.
Additional research may result in the development of a remote sensing system based
on electrochemical impedance techniques and electrochemical polarization decay for
monitoring corrosion in underground pipes encased in concrete.
Operation, Maintenance, and Rehabilitation
Fundamental research is needed in these areas:
• Address private ownership issues associated with established rehabilitation
and replacement practices in house and service laterals. Since many utilities do
not have access or control of these lines, the private ownership issues must be
addressed and trenchless technologies that can accommodate bends and line
configurations are needed to minimize property disturbance.
• Determine the longevity and performance of rehabilitation methods under the
various conditions to provide comparative data on cost effectiveness.
• Evaluate new and improved repair and replacement technologies/methodologies.
• Evaluate approaches to optimize and assess O&M programs.
• Evaluate the performance of sealers (grouts and liners) under various conditions
and wastewater chemistry.
• Evaluate alternatives to remove roots and prevent root growth.
• Develop a standardized rating system for sewer system evalaution tools.
Table 8.1 summarizes conveyance system research needs.
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JULY 2006
Emerging Technologies
Table 8.1 Conveyance System Research Needs
Category
Large-Diameter Sewers
and Deep Tunnels
Technology
All rehabilitation techniques
Small-Diameter Sewers
and Laterals
Conveyance System
lanagement
Man;
Conveyance System
\ssessment
All grouts and liners
All new and replaceme
technologies
Impact moling
CIPP, fold and form, replace-
ment
Replacement construction
Sewer maintenance program
Regional I/I control program
Capacity Restoration Root removal and control
CCTV, digital camera inspec-
tion
Wireless monitoring systems
Smart sewer assessment
systems
•
Focus of Investigation
Evaluate longevity and perform-
ance of rehabilitation technologies
under various conditions.
Evaluate performance of sealers.
Identify improved materials and
construction techniques.
Improve trenchless technologies
that can accommodate bends and
line configurations.
Evaluate long-term performance o
plastic pipe in force mains.
Evaluate approaches to optimize
and assess O&M programs.
Evaluate approaches to optimize
and assess O&M programs.
Develop predictive tools or pe
formance indicators to measure
degradation of system.
Evaluate alternatives to remove
roots and prevent root growth.
Standardize and better define
inspection procedures and criteria
to interpret defect severity.
Improve accuracy or reduction of
measurement error in system.
Investigate "intelligent systems" for
remote sensing and monitoring.
*
jre
•
Conveyance Systems
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Emerging Technologies
JULY 2006
New Construction
Improved materials and construction techniques can reduce future deterioration and
rehabilitation needs. The relationship between the chemistry of sewage to pipe materials
must be thoroughly understood. The use of new materials (resins) and the control of
corrosion in metallic and pre-stressed concrete pipes need to be further developed.
Improved standards and materials of construction are required. Research needs
include:
• Identify new materials for pipe and pipe coatings that control erosion and increase
strength.
• Develop sensors that are incorporated into new systems to track deterioration and
structural performance over time.
• Evaluate alternative designs for watertight manholes for cost-effectiveness.
• Evaluate long-term performance of plastic pipe materials now in use for force
mains.
• Review and evaluate current sewer design and installation practices.
• Evaluate new and improved coupling techniques.
• Determine whether solvent-welded pipe performs better than rubber-gasketed pipe
for I/I and root control in house and service laterals.
8.3 Chapter References
Optimizing Operations, Maintenance, and Rehabilitation of sanitary Sewer Collection
Systems New England Interstate Water Pollution Control Commission, Lowell, MA
01852 (December 2003)
U.S. EPA. National Risk Management Research Laboratory. Innovation and Research
for Water Infrastructure for the 21st Century. Summary Report from the EPA Research
Planning Workshop, Arlington, VA (20-21 March 2006)
U.S. EPA. Tafuri, A.N. and A. Selvakumar. Wastewater Collection System Infrastructure
Research Needs. National Risk Management Research Laboratory. EPA/600/JA-02/226
(2002)
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Trade Associations
A.1 Introduction
This chapter lists professional and trade associations that may have significant information
and may provide relevant research assistance on conveyance system technologies within
their respective areas of expertise.
A.2 Trade Associations
American Concrete Pipe Association
222 W. Las Colinas Blvd, Suite 641, Irving, TX
Phone: 972-506-7216 Web Address: www.concrete-pipe.org
American Underground Contractors Association
4301 N. Fairfax Drive, Suite 360, Arlington, VA
Phone: 703-358-9300 Web Address: www.auca.org
American Society of Civil Engineers (ASCE)
1801 Alexander Bell Drive, Reston, VA
Phone: 800-548-2723 Web Address: www.asce.org
Center for Underground Infrastructure Research and Education
Michigan State University, 230 Farrall Hall, East Lansing, Ml 48824
Phone: 517-432-2096 Web Address: www.cuire.org
Ductile Iron Pipe Research Association
245 Riverchase Parkway East, Suite 0, Birmingham, AL
Phone: 205-402-8700 Web Address: www.dipra.org
Fiberglass Tank and Pipe Institute
11150 S. Wilcrest Drive, Suite 101, Houston, TX
Phone: 281-568-4100 Web Address: www.fiberglasstankandpipe.com
National Association of Clean Water Agencies
1816 Jefferson Place, NW, Washington, D.C.
Phone: 202-833-2672 Web Address: www.nacwa.org
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Emerging Technologies JULY 2005
National Association of Sewer Service Companies
1314 Bedford Ave, Suite 201, Baltimore, MD
Phone: 410-486-3500 Web Address: www.nassco.org
National Clay Pipe Institute
P.O. Box 759, Lake Geneva, Wl
Phone: 262-248-9094 Web Address: www.ncpi.org
National Environmental Services Center
P.O. Box 6064, Morgantown, WV
Phone: 304-293-4191 Web Address: www.nesc.wvu.edu
New England Interstate Water Pollution Control Commission
100 Foot of John Street, Lowell, MA 01852
Phone: 978-323-7929 Fax: 978-323-7919
E-mail: mail@neiwpcc.org Web Address: www.neiwpcc.org
North American Society for Trenchless Technology
1655 N. Ft. Meyer Drive, Arlington, VA
Phone: 703-351-5252 Web Address: www.nastt.org
Pipe Rehabilitation Council
423 W King Street, Suite 350, Chambersburg, PA 17201
Phone: 717-267-1995 Web Address: www.piperehab.org
Trenchless Technology Center
600 W. Arizona, Engineering Annex, P.O. Box 10348, Ruston, LA
Phone: 800-626-8659 Web Address: www.latech.edu/tech/engr/ttc
Uni-Bell PVC Pipe Association
2655 Villa Creek Drive, Suite 155, Dallas, TX 75234
Phone: 450-434-2092 Web Address: www.wwema.org
Water and Wastewater Equipment Manufacturers Associations
(WWEMA)
P.O. Box 17402, Washington, D.C.
Phone: 703-444-1777 Web Address: www.wwema.org
Water Environment Federation
601 Wythe Street, Alexandria, VA 22314-1994
Phone: 703-684-2452 http://www.wef.org
Water Environment Research Foundation
635 Slaters Lane, Suite 300, Alexandria, VA 22314
Phone: 703-684-2470 http://www.werf.org
A-2 Conveyance Systems
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&EPA
United States
Environmental Protection
Agency
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