Gradient

Principals

 Andrew B. Bittner, M.Eng., P.E.
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Education

M.Eng., Environmental Engineering and Water Resources, Massachusetts Institute of Technology

B.S.E., Environmental Engineering, University of Michigan

B.S., Physics, University of Michigan

Licensed Professional Engineer in New Hampshire and Idaho

Expertise

  • NAPL Transport
  • Groundwater & Surface Water Modeling
  • Groundwater Hydrology
  • Soil Vapor Intrusion Modeling
  • Hydraulic/WWTP Modeling

Andrew B. Bittner, M.Eng., P.E.

Principal Scientist

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Mr. Bittner is a licensed environmental engineer with over 20 years of experience specializing in the fate and transport of contaminants in porous and fractured media, the migration of coal combustion products in groundwater and surface water, groundwater and surface water modeling, and groundwater corrective actions. Mr. Bittner has applied these skills at a wide range of projects including at Superfund sites, landfills and surface impoundments, manufacturing facilities and dry cleaning sites. Mr. Bittner has also provided litigation support related to the fate and transport of constituents in groundwater and surface water, both in consulting and testifying roles. Additionally, Mr. Bittner has extensive experience developing risk-based remedial strategies, designing remedial investigations, delineating and characterizing the distribution of environmental pollutants, and overseeing remedial operations in South America.

Education

M.Eng., Environmental Engineering and Water Resources, Massachusetts Institute of Technology

B.S.E., Environmental Engineering, University of Michigan

B.S., Physics, University of Michigan

Licensed Professional Engineer in New Hampshire and Idaho

Expertise

  • NAPL Transport
  • Groundwater & Surface Water Modeling
  • Groundwater Hydrology
  • Soil Vapor Intrusion Modeling
  • Hydraulic/WWTP Modeling

Services

Representative Projects

Metals Fate and Transport Modeling:   Prepared expert report related to the fate and transport of metal constituents in groundwater, including barium, boron, and arsenic, from multiple coal combustion residual surface impoundments.

Arsenic Fate and Transport Modeling:  For litigation support, modeled the fate and transport of arsenic and other coal ash related constituents in groundwater and surface water downgradient of a large Midwestern coal ash surface impoundment located in a karst environment.  Model simulations compared potential impacts to groundwater and surface water resulting from potential surface impoundment closure scenarios.

Surface Water Fate and Transport Modeling:  Prepared expert report on human health and ecological risks due to a potential spill of barged coal combustion byproducts (CCBs) on a large Midwestern river.  Modeled the fate and transport of key CCB constituents, including arsenic, in surface water for a range of spill scenarios and river flow conditions and estimated potential downstream concentrations at drinking water intake locations.

Cost Allocation:  Consulting expert for a large scale cost allocation litigation at a Midwestern Superfund site.  The project involved a forensic evaluation of the sources of tar to river sediments considering site industrial operational history, contaminant fate and transport, and observed contaminant patterns.  The project also included the detailed calculation of tar mass present in the environment using both visual observations and analytical data.

Groundwater and Solute Transport Modeling:  For a PRP group, developed a 3-D numerical groundwater and solute transport model for PCE at a Superfund site in New Hampshire.  Calibrated the model using approximately 10 years of data with review and oversight by US EPA and USGS.  Designed an optimization algorithm to develop optimal groundwater pump-and-treat system.

Groundwater and Solute Transport Modeling:  Developed a 3-D numerical groundwater and solute transport model for a site in Brazil using MODFLOW and MT3D for volatile organic compounds and pesticides.  Used the model to evaluate hydraulic barrier remediation alternatives.

Metals Fate and Transport Modeling:  Evaluated technical approach used by US EPA to simulate the migration of arsenic, selenium, and other metals in groundwater from overlying coal combustion storage units.  Model analyses were included in regulatory comments submitted in response to US EPA’s 2010 Coal Combustion Product Risk Assessment.

Coal Ash Decision Framework: Developed decision framework that aids utilities in selecting coal ash surface impoundment closure plans.  Framework considers impacts to groundwater, surface water, and air, as well as risks to workers and consumption of national resources.

Selected Publications

Lewis, AS; Bittner, AB; Lemay, JC.  2017. "Achieving Groundwater Protection Standards for Appendix IV Constituents: The Problem with Using Background Concentrations in the Absence of Maximum Contaminant Levels (MCLs)." Presented at the 2017 World of Coal Ash Conference (WOCA), Lexington, KY, May 8-11

Lewis, A; Bittner, A; Radloff, K; Hensel, B.  2017. "Storage of coal combustion products in the United States: Perspectives on potential human health and environmental risks." In Coal Combustion Products (CCP's): Characteristics, Utilization and Beneficiation. (Eds.: Robl, T; Oberlink, A; Jones, R), Woodhead Publishing, Duxford, United Kingdom, p481-507.

Bittner, A.  2017. "Evaluation of Groundwater Protectiveness of Potential Surface Impoundment Closure Options." Presented at the 2017 World of Coal Ash Conference (WOCA), Lexington, Kentucky, 20p.

Bittner, A.  2016. "A Retrospective Look at Remediation in the State of Rio de Janeiro, Brazil: And What Lessons We Can Apply to Remediation Projects in Other Emerging International Markets." Presented at Battelle's Tenth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, Palm Springs, CA, May 22-26, 17p.

See All Andrew Bittner Publications