9:00-9:25 a.m.
Condition Assessment Breakthrough for AC Pipes
Csaba Ékes, Ph.D., P.Geo., President, SewerVUE Technology Corp.
Pipe Penetrating Radar (PPR) is the underground in-pipe application of Ground Penetrating Radar (GPR), a non-destructive testing method that can detect defects and cavities within and outside non-ferrous (reinforced concrete, vitrified clay, PVC, HDPE, etc.) pipes. The key advantage of PPR is the unique ability to map pipe wall thickness and deterioration including voids outside the pipe, thus enabling accurate predictability of needed rehabilitation or the timing of replacement. With recent developments the technology is able to accurately image pipe wall deterioration and other defects previously unobtainable in asbestos cement (AC) pipes. This presentation covers recent advancements of PPR inspection technology and discusses elected case studies in detail.

ekesCsaba Ékes, Ph.D., P.Geo., is the founder and president of SewerVUE Technology Corp., a company specializing in developing and licensing cutting-edge pipe inspection technologies. SewerVUE developed the most accurate, float-based multi-sensor pipe inspection system and the patented pipe penetrating radar (PPR) technology. He is an internationally recognized expert on the applications of GPR and PPR.

9:30-9:55 a.m.
TRA Walker-Calloway Outfall: Aging Inimitable System
Derek Schwanke, P.E., Project Manager, RJN Group Inc.
Marco Ramirez, P.E., Engineer-Planning & Development, Trinity River Authority of Texas
This presentation will discuss the Walker-Calloway Branch Outfall Trunk Sewer System and the unique way the Trinity River Authority provides operations and maintenance on the facilities, and the strategy that is currently unfolding to rehabilitate/replace the infrastructure and extend the design life. Since 2012, detailed investigations have been conducted on the system to estimate the remaining useful life. The condition assessment utilized cutting-edge CCTV technology. Capacity of the system was also analyzed utilizing flow meters and by developing a hydraulic model. Lastly, a preliminary design report was conducted to develop a detailed plan over seven phases to rehabilitate the system. The intent of the multi-year study and subsequent rehabilitation plan is to minimize cost and impact to the customer cities that discharge flow into the system.

schwankeDerek Schwanke, P.E., Project Manager, RJN Group, offers eight years of experience with collection system engineering, including data research, utility coordination, feasibility reports, cost estimation and design solutions. His expertise stems from managing and conducting comprehensive sewer studies, and developing rehabilitation and design programs to remediate I/I and add capacity to municipal collection systems.



Marco Ramirez, P.E., Engineer-Planning & Development, Trinity River Authority of Texas, is responsible for managing the design of wastewater collection projects and lift stations. He has been involved in the design and construction of water and wastewater projects for 15 years, and has a B.S. in Civil Engineering from the University of Texas at El Paso.

10:00-10:55 a.m.
Contamination Issues on Construction Sites
Richard Klar, P.Geo., Vice President, Raba Kistner Environmental
Rafael Ortega, P.E., President, Aurora Technical Services LLC
Contamination can be detected on sites during construction. In addition, the sites might become contaminated during construction for a variety of reasons. Both conditions will result in delays, loss of resources and increased cost. It is also critical to meet the regulations developed by owners (local, state and federal agencies, and private companies) to minimize losses, which can be even more challenging. This presentation will review environmental site investigation protocols to address issues related to contamination impacting underground utility pipelines, such as methods to identify and handle various types of contaminations, the use of different pipe materials and installation/replacement technologies, and ever-changing regulations regarding Hazardous Waste Management Plans. Also, case studies will illustrate contamination issues on construction sites and methods used to minimize delays and other losses.

klarRick Klar, P.Geo., environmental operations manager and geosciences practice leader for Raba Kistner Environmental Inc., has over 22 years of diversified experience in geologic and hydrogeologic investigations throughout South Central Texas, New Mexico and Nevada. This includes substantial consulting, ground geophysics and regulatory compliance knowledge in support of numerous environmental and geosciences projects.

ortegaRafael Ortega, P.E., president of Aurora Technical Services LLC, has spent his entire career serving municipalities and agencies on some of the largest and most complicated water and wastewater systems in the U.S. This experience, coupled with serving on multiple national standards committees and pipeline-focused organizations, has taught him to successfully meet project challenges requiring a high level of expertise, current and relevant technical aptitude, and knowledge about how to construct the project.

Cumaraswamy Vipulanandan (Vipu), Ph.D., P.E., is a professor of Civil and Environmental Engineering at the University of Houston (Texas). He is the Director of the Center for Innovative Grouting Materials and Technology (CIGMAT) and of the Texas Hurricane Center for Innovative Technology (THC-IT), where he served as the Department chairman from 2001 to 2009.

Honolulu Goes All Trenchless For Largest Force Main Installation
James Kwong, Ph.D, P.E., Principal, Yogi Kwong Engineers LLC
The Ala Moana Wastewater Pump Station and Force Main system is Honolulu’s largest sewage transmission facility. The city and county of Honolulu had two parallel 7,500 LF, 60” sewer force mains constructed and installed within 81” diameter steel casings jacked by microtunneling methods to improve the reliability and increase raw sewage conveyance capacity from the Ala Moana WWPS to the Sand Island WWTP. To cross under the only entrance to Honolulu Harbor, the force main was installed 85 feet below MSL with 100-foot deep jacking and reception shafts. This presentation will provide an overview of the project, and the requirements for design and construction of deep shafts and microtunneling system. Force main pipe requirements and manufacturer support during the submittal, quality control and construction phases will also be discussed.

kwongJames Kwong Ph.D., P.E., principal, of Yogi Kwong Engineers LLC, has 38 years of experience in engineering geology and geotechnical engineering in Hawaii, the U.S. mainland, Canada, Asia and other areas of the Pacific Basin. His experience includes geotechnical investigations, design and construction evaluations for tunnels, micro-tunnels, ocean outfalls, horizontal direction drilling methods, ground improvement, etc.

Microsilica Cement Liners Drive Sewer Manhole Rehab for 25 Years
C. Vipulanandan (Vipu), Ph.D., P.E., Director of CIGMAT, Director of THC‑IT, and Professor of Civil & Environmental Engineering at University of Houston
Mario Tamez, President, Standard Cement Materials Inc.
More than 3 million vertical feet later and the dry, microsilica powder admixture used in packaged Portland cement for sewer manhole rehabilitation has charmed many to take a careful look at the sustainable green technology product. Similarly, the Greater Houston Wastewater Program has taken the lead and used the spray-applied shotcrete mortar with pozzolan and admixtures in its sewer-collection system since 1990. This massive, multi-phase program included both building new and rehabilitating existing sewer manholes, construction of relief sewers, pipe upgrades, pump station restoration, and expansion of water treatment facilities. Moreover, 25 years of successful repairs confirm that high-strength, microsilica-cement restores structural reliability in manholes, stops water infiltration and protects against damaging sulfates, (MIC) bio-genic corrosion and chemical attack. This is a simple-to-install, non-destructive cement alternative to dig-and-replace.

vipuCumaraswamy Vipulanandan (Vipu), Ph.D., P.E., is a professor of civil and environmental engineering at the University of Houston (Texas). He is the Director of the Center for Innovative Grouting Materials and Technology (CIGMAT) and the Texas Hurricane Center for Innovative Technology (THC-IT), where he served as the Department chairman from 2001 to 2009.


tamezMario Tamez, president of Standard Cement Materials Inc., is a formulator of cements that have restored structural integrity, stopped water infiltration and protected sewer manholes against corrosion for 25 years. He is co-inventor of an original patent, and has advanced the use of condensed microsilica powder admixtures with Portland cement in dry cement mixes and strengthened its application by working through established performance evaluation platforms.


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