Gradient

Senior Scientists

John M. Kondziolka, M.S., E.I.T.
Bio

Education

M.S., Civil and Environmental Engineering, Massachusetts Institute of Technology

B.S., Civil and Environmental Engineering, Arizona State University

Expertise

  • Contaminant Fate and Transport
  • Risk Assessment
  • Fluid Dynamics
  • Numerical Modeling

    John M. Kondziolka, M.S., E.I.T.

    Senior Environmental Engineer

    Bio

    Mr. Kondziolka is a senior environmental engineer with experience using analytical methods and numerical simulations to solve problems in environmental fluid mechanics.  At Gradient, Mr. Kondziolka works with the Environmental Sciences team to model contaminant fate and transport processes, conduct risk assessments, understand site histories, and develop conceptual site models and remedies.  Before joining Gradient, he worked at the MIT Environmental Fluid Mechanics Laboratory, studying sediment transport and its effects on the evolution of aquatic vegetated ecosystems.

    Education

    M.S., Civil and Environmental Engineering, Massachusetts Institute of Technology

    B.S., Civil and Environmental Engineering, Arizona State University

    Expertise

    • Contaminant Fate and Transport
    • Risk Assessment
    • Fluid Dynamics
    • Numerical Modeling

      Representative Projects

      Green Chemistry Product Evaluation:  Managed a green chemistry product risk assessment using computational fluid dynamics (CFD) modeling to support fault tree analysis.

      Development of a Numerical Groundwater Flow Model:  Developed a complex, 100-year transient MODFLOW/MODPATH model of groundwater flow, manufacturing site recharge and operations, land development, and contaminant migration from historical releases to support cost allocation and insurance recovery.

      Refrigerant Risk Assessment:  Conducted statistical analyses on indoor gas-phase contaminant concentrations for a refrigerant risk assessment.  Oversaw computational fluid dynamics (CFD) simulations and data assessment.

      Development of a Contaminant Fate and Transport Model:  Modeled the migration and fate of contaminant plumes under different remediation scenarios with REMChlor to guide stakeholder decision-making.  Managed the production of a US EPA Region IV-approved work plan and Quality Assurance Project Plan to investigate subsurface impacts.

      Fluid Mechanics Analysis:  Provided fluid mechanics analysis and computational fluid dynamics (CFD) data assessments to support a propellant risk assessment using fault tree analysis.

      Migration and Fate Modeling:  Managed the maintenance and use of a site-specific, agency-approved 3-D groundwater flow and contaminant transport MODFLOW/MT3D model for a Superfund site impacted with VOCs.

      Risk Assessment Framework Development: Developed a relative risk framework to assess impacts to groundwater from coal combustion residuals (CCR) associated with different surface impoundment closure options. Parameterized and compared two contaminant transport models (proprietary and EPACMTP) to predict receptor risk from metals.

      Analytical Model Development:  Predicted transport distances of contaminants in groundwater plumes within a large industrial area using an analytical fate and transport model to allocate remedy costs.

      Sediment Transport Analysis:  Provided independent sediment transport analysis and design recommendations for a vegetation restoration project in Texas.

      Modeling Non-Aqueous Phase Liquid (NAPL) Transport:  Developed a subsurface LNAPL evaporation, diffusion, and dissolution model to predict contaminant origin.

      Selected Publications

      Bittner, AB; Kondziolka, JM; Lewis, A; Hensel, B; Ladwig, K.  2016. "Groundwater Assessment Framework for Evaluating the Relative Impacts of Coal Ash Surface Impoundment Closure Options." Presented at Battelle's Tenth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, Palm Springs, CA, May 22-26

      Bittner, AB; Kondziolka, JM; Sharma, M; Nangeroni, P; McGrath, R.  2016. "Using Tracer Test Data to Calibrate a Groundwater Flow and Solute Transport Model." Presented at Battelle's Tenth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, Palm Springs, CA, May 22-26

      Miere, DWSA; Kondziolka, JM; Nepf, HM.  2014. "Interaction between neighboring vegetation patches: Impact on flow and deposition." Water Resour. Res. 50 : 3809-3825.

      Kondziolka, JM; Nepf, HM.  2014. "Vegetation wakes and wake interaction shaping aquatic landscape evolution." Limnol. Oceanogr. Fluids Environ. 4 : 106-119.

      Kondziolka, J; Nepf, H.  2014. "Spatial structure and evolution in emergent vegetated ecosystems." Presented at Community Surface Dynamics Modeling System (CSDMS) Annual Meeting, Boulder, Colorado, May 20-22

      See All John Kondziolka Publications