jrj

Experience

American Electric Power, Columbus, OH

Environmental Supervisor, 2024 - Present
Environmental Specialist Consultant, 2022 - 2024
Environmental Engineer Principal, 2020 - 2022
Environmental Engineer Senior, 2017 - 2020
Environmental Engineer, 2013 - 2017
  • Design of geochemical studies, including isotopes, at landfill and surface impoundment sites to investigate sources of contamination
  • Hydrogeological investigation design in both unconsolidated and consolidated geological settings
  • Responsible for the statistical evaluation of groundwater quality data
  • Development of database and statistical analysis software for water quality data
  • Compliance support for residual solid waste landfills, mine reclamation, and surface impoundment closures following the Federal Coal Combustion Residual regulation and State regulations in Ohio, Indiana, Virginia, and West Virginia
  • Provide landfill operator training for supervisors and other on-site personnel at residual solid waste landfill facilities
  • Environmental due diligence for decommissioning and liability transfers for several power plants

U.S. Environmental Protection Agency, Cincinnati, OH

Mathematical Modeler, 2010 - 2013
  • Characterized microbial communities in fecally polluted waters and evaluated predictive models to detect primary sources of pollution
  • Performed spatial-temporal analysis of fecal indicator bacteria from non-point source pollution at the watershed scale
  • Designed sampling strategies based on different predictive models

Indiana & Michigan Power Company, Lawrenceburg, IN

Engineering Intern, Apr 2010 - Sep 2010
  • Supervised daily operations of type I landfill, which included filing weekly environmental reports and daily safety briefing and inspections
  • Implemented alert system for coal pile tractor operators
  • Analyzed barge shipments and material weights for the design of a new coal conveyor
  • Ensured that power conditions were maintained by performing reactive capability tests
  • Inspected electrostatic precipitators to ensure proper functioning and to remove grounds

Helmholtz Zentrum, Institute for Groundwater Ecology, Munich, Germany

Researcher, Jun 2008 - Aug 2008
  • Observed hydraulic conductivity for different porous media and analyzed tracer experiments in columns
  • Developed an online measurement method to interpret the fluorescent signal in column experiments
  • Developed an experimental set-up for a large 3-D tracer experiment

H.C. Nutting Company, Cincinnati, OH

Field/Lab Technician, Jun 2005 - Aug 2006
  • Supervised the installation of a geomembrane liner in a landfill
  • Obtained concrete core samples and performed air content, slump tests and compressive and flexural strength
  • Performed in-place density tests by nuclear and sand cone methods, Proctor tests, sieve analysis, Atterberg limit, permeability, and various other tests on soils

Education

  • University of Cincinnati, Ph.D. Environmental Engineering, 2010 - ABD
  • Rose-Hulman Institute of Technology, B.Sc. Civil Engineering with minor in Mathematics, 2004 - 2009
  • Universität Stuttgart, Study Abroad, 2007

Certificates

  • Registered Professional Engineer in Ohio, Indiana, West Virginia, and Arkansas
  • Technical translator in German language

Tools

  • R, Python, SQL (SQLite, PostgreSQL + Postgis)
  • Fortran, C
  • Git, Appveyor, Travis

Publications

Chin-Min Cheng, Tarunjit Butalia, Robert Baker, Justin Jent, and William Wolfe. (2021). “Using Coal Combustion Residuals for Abandoned Mine Reclamation.” 2021 Conference of the International Mine Water Association

Ashton, A., Crocceti, C., Jent, J.R., and Massey-Norton, J.T. (2016). “U.S. EPA’s Final CCR Rule. Using Advanced Techniques to Assess Groundwater Quality Signatures Associated with Coal Combustion Residuals.” Proceedings of 2016 COAL-GEN Conference

Jent, J.R., Ryu, H., Toledo-Hernandez, C., Santo Domingo, J.W., and Yeghiazarian, L. (2013). “Determining Hot Spots of Fecal Contamination in a Tropical Watershed by Combining Land-Use Information and Meteorological Data with Source-Specific Assays.” Environ. Sci. Technol. http://dx.doi.org/10.1021/es304066z

Jent, J.R., Rhea L., Shuster, W., Rao, M.B., and Yeghiazarian, L. (In Preparation). “Boosted Regression Trees for Predicting E. coli.”

Presentations

Coal Combustion Residual Management in Ohio. Electrical Power Research Institute Fall Advisory Meeting. September, 2019.