Analytical Solute and Heat Transport Model (ASHTM): Tool to Assist Superfund Oversight
Sponsored by: U.S. EPA Region 9
U.S. Environmental Protection Agency (EPA) and its contractors performing oversight at Superfund Sites review numerical models developed to simulate contaminant transport. An analytical transport model could be used to check the numerical model results but a practical modeling tool based on a 3D analytical solute transport model is not publicly or commercially available. The roles of an analytical model in Superfund oversight are to simulate the general plume behavior; guide the development of, and provide a check for, a more complex numerical solute transport model; and evaluate smaller scale transport such as during natural gradient tracer tests. EPA tasked APTIM to develop an analytical model for solute transport in a three-dimensional aquifer of finite thickness with uniform flow, dual porosity, sorption, sequential decay, and time-dependent source. The new model was verified against existing analytical models for special cases and against numerical models MT3DMS and RT3D, and published in two journal papers. EPA tasked RTI to develop a graphical user interface (GUI) for the model. Example applications are analysis of tracer tests at the Stringfellow Superfund Site and simulation of TCE plume at the Fresno Sanitary Landfill.
Patrick Kelly, U.S. EPA Region 9 (kelly.patrick@epa.gov or 415-972-3198)
Tomas (Tom) Perina, Ph.D., P.G., CHG, APTIM Environmental & Decommissioning (tomas.perina@aptim.com or 951-318-2341)
T. Perina is a Sr. Project Manager with APTIM since 2015. He has 35+ years of experience in Europe and USA. He served as Project Manager and hydrogeologist on various Region 9 contracts since 2002 while employed at CH2M HILL and APTIM. He has managed oversight and fund-lead work at Omega Chemical Corporation, Puente Valley, Muscoy-Newmark, Stringfellow, Montrose-Del Amo, and supported other sites. His continuing research interests are mathematical modeling of aquifer tests, soil vapor extraction, and contaminant transport.
Moderator:
Renan Havill, U.S. EPA Technology Innovation and Field Services Division (havill.renan@epa.gov or 703-615-7735)
Renan works in the Technology Integration and Information Branch of the Technology Innovation and Field Services Division at EPA Headquarters. He supports the CERCLA Education Center and Clean Up Information Network webinars where institutional knowledge is preserved and new clean up technology is disseminated. He leads webinar series that inform regional Superfund staff of EPA Headquarters resources and manages collaborative tools developed. Renan holds a Bachelor's of Science in Environmental Science from Indiana University and a Master's of Science in Biomedical Engineering from George Washington University. He worked as a supervisory laboratory technician in a medical diagnostics lab prior to joining the EPA.
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