UC Berkeley Geosystems Group Wednesday Lecture Series: Design of a Near Surface Disposal Facility

Lecture | January 29 | 12:10-1 p.m. | Davis Hall, 406 Davis Hall

 Rajendram (Arul) Arulnathan, Associate Vice President, AECOM

 UC Berkeley Geoengineering Society

A confidential client proposes to develop the Near Surface Disposal Facility (NSDF) to establish a safe, local, and permanent means for the disposal of low-level radioactive waste and mixed waste at one of its sites. The NSDF is being designed, licensed, and built as an engineered containment mound (ECM). The ECM will have an operational life of 50 years and a total waste capacity of 1,000,000 m3. The development of the facility, and the placement of waste within the ECM, will be completed in a phased approach. The main physical elements of the NSDF include the ECM containing the waste; the wastewater treatment plant (WWTP), which treats leachate, contact water, and operational wastewater; various support facilities that enable operation; and site infrastructure. The focus of the presentation is the design considerations for the ECM. The ECM must be able to withstand a 10,000-year return period earthquake ground motions without harmful discharge of low-level radioactive waste materials to the environment. Also, the ECM must be able to withstand the 2,500-year return period earthquake ground motions without significant damage.

Dr. Arulnathan earned his MS and PhD in geotechnical engineering from the University of California, Davis, He has been with AECOM water business line since 1999. He has been a leading subject matter expert in seismic analysis and design of various facilities including dams, levees, bridges, ports and nuclear structures in the nation. He managed/played a key role on planning, investigation, safety evaluations, and design of over 25 earth dams and over 1,200 miles of levees in California and around the world. He is currently the engineering design manager of a $105M new Pacheco Reservoir Expansion Project. Dr. Arulnathan has published several technical papers in both geotechnical and earthquake engineering and taught geotechnical earthquake engineering course to graduate students at the University of California at Davis. He has been invited to present at conferences, graduate student societies, federal and state agencies. He has served as a member on expert panels and boards for the State of California water sector.

 CA, pong@berkeley.edu, 510-664-5249