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INSTRUCTORS:
Edward Alan Ambler, PE, LEED AP
Dave Clarke, PE
Purpose and Background
These presentations were recorded at the UESI Pipelines 2025 Conference.
The City of Tampa’s Westshore Water Main Rehabilitation Project (26 minutes)
This presentation examines the City of Tampa’s Westshore water main rehabilitation, which utilized pipe bursting to replace aging 12-inch cast iron mains originally installed in the 1960s. The project demonstrates how trenchless technology can minimize excavation, reduce construction impacts, and provide opportunities for upsizing existing pipelines. Special attention was given to sensitive areas, including bridge crossings, box culverts, and proximity to critical infrastructure such as fuel pipelines. The project team integrated GIS-based design tools detailed topographic surveys, and contractor-developed bursting plans to manage risks and streamline construction. By incorporating bid alternates for horizontal directional drilling where pipe bursting was not feasible, the city ensured flexibility in addressing complex site conditions. The result was a more efficient, less disruptive rehabilitation that maintained reliable water service and reduced community impacts.
Innovative Approaches to Water Main Replacement: Navigating Environmental Concerns and Spatial Constraints (25 minutes)
This presentation highlights the use of Close Tolerance Pipe Slurrification (CTPS) as an innovative solution for replacing asbestos cement (AC) water mains in a sensitive equestrian trail setting in Broward County, Florida. Traditional methods such as open-cut and HDD were considered but rejected due to environmental disturbance, depth concerns, and regulatory constraints. CTPS, approved by the EPA and NESHAP, grinds and encapsulates AC pipe fragments into a stable slurry, minimizing the risk of asbestos exposure and environmental contamination. The method allowed replacement within narrow rights-of-way while maintaining water service continuity through bypass systems. The presentation also reviews ASTM standards, slurry testing protocols, and lessons learned from field trials. This approach offers municipalities a safe, regulatory-compliant alternative for AC pipe replacement in constrained or environmentally sensitive areas.
Benefits and Learning Outcomes
Upon completion of this course, you will be able to:
- Describe how pipe bursting was applied to rehabilitate Tampa’s aging cast iron water mains while addressing site-specific constraints.
- Identify the role of GIS, topographic surveys, and bid alternates in managing risks for trenchless rehabilitation projects.
- Explain the CTPS process and how it addresses environmental and regulatory challenges associated with asbestos cement pipe replacement.
- Discuss the advantages of CTPS over traditional open-cut, HDD, and pipe bursting methods in environmentally sensitive locations.
Assessment of Learning Outcomes
Students' achievement of the learning outcomes will be assessed via a short post-test assessment (true-false, multiple choice, and/or fill in the blank questions).
Who Should Attend?
- Utility and Pipeline Engineers
- Design and Consulting Engineers
- Construction Contractors
- Project Managers
- Academic and Professional Researchers
- Early Career and Pipeline Professionals
How to Earn Your CEUs/PDHs and Receive Your Certificate of Completion
To receive your certificate of completion, you will need to complete a short post-test and receive a passing score of 70% or higher within 1 year of purchasing the course.
How do I convert CEUs to PDHs?
1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]