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INSTRUCTORS:
John Appenzeller
Zach Smierciak, PE
Michael Thomas
Garret Toombs
Purpose and Background
These presentations were recorded at the UESI Pipelines 2025 Conference.
Hillsborough County’s Commitment to I/I Reduction – Pre/Post Results of a Collection System Rehabilitation Program (29 minutes)
This presentation examines Hillsborough County’s long-term strategy to reduce inflow and infiltration (I/I) in its aging wastewater collection system. The project involved a five-year plan including pre-analysis, rehabilitation, and post-analysis to evaluate performance improvements. Engineers applied advanced inspection tools such as Focused Electrode Leak Location (FELL) technology and CCTV inspections to identify lateral defects and prioritize rehabilitation strategies. Rehabilitation techniques included grouting, lining, and point repairs, with innovative methods like Vac-a-Tee cleanout installation to overcome site constraints. The study demonstrated significant I/I reductions, with lateral rehabilitation yielding up to 88% improvement in problem areas. The results highlighted both cost savings and operational benefits, while also emphasizing the importance of asset management and data integration for long-term infrastructure planning.
Parallel Paths: Overseeing Two Pipeline Rehabilitation Projects in Southern California (23 minutes)
This case study highlights the management and execution of two concurrent large-diameter pipeline rehabilitation projects by the Metropolitan Water District of Southern California. Originally initiated as an emergency repair on the Sepulveda Feeder, the scope expanded mid-project to include the Alamakola Pipeline. The rehabilitation strategy utilized carbon fiber reinforced polymer (CFRP) technology, chosen for its strength, corrosion resistance, and trenchless application in both urban and rural settings. The project showcased the agility of a single mobilized crew working under strict 14-day shutdown windows across widely different environments—from congested Los Angeles boulevards to agricultural and mountainous terrains. Key success factors included careful planning, site-specific design, and coordination with regulatory agencies to ensure safety and environmental compliance. The project demonstrates how adaptive planning and proven rehabilitation technologies can extend pipeline service life by 50+ years.
Benefits and Learning Outcomes
Upon completion of this course, you will be able to:
- Describe the process and technologies used to evaluate and rehabilitate aging sewer laterals for I/I reduction.
- Discuss the cost-effectiveness and performance outcomes of different rehabilitation methods in a collection system.
- Explain the use of carbon fiber reinforced polymer (CFRP) technology for large-diameter pipeline rehabilitation.
- Identify strategies for managing parallel pipeline projects under strict schedule, logistical, and environmental constraints.
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]