Nicola Calder, M.Sc., P.Eng., Senior Numerical Modeller

  • M.Sc., Civil Engineering, Queen’s University, 2001
  • B.Sc., Environmental Engineering, University of Guelph, 1998

Nicola Calder has 20 years of experience in numeric modelling of hydrogeologic, hydraulic and hydrologic systems. Working at Geofirma since 2002, Ms. Calder has focused on hydrogeologic modelling, with extensive experience conducting flow, two-phase flow and transport modelling in support of safety assessments, environmental assessments, site remediation assessments and research in two-phase flow transport mechanisms. In particular, she has specialized experience developing two-phase flow models of gas and water. Recently, Ms. Calder has become more involved in hydrologic modelling, considering detailed water balances and infiltration in the vadose zone. Ms. Calder has been extensively involved in detailed flow, two-phase flow and transport modelling to support safety assessments of hypothetical deep geologic repositories for high-level waste in Canada and the proposed low-level and intermediate level waste repository at the Bruce Site in Ontario; in two-phase flow modelling to support delta pressuring in underground natural gas storage reservoirs; infiltration modelling conducted to evaluate the final landfill cover design for highly toxic waste; infiltration modelling to evaluate landfill leachate generation in a very dry climate; detailed groundwater modelling to support the safety assessment of the decommissioning of a nuclear reactor site; and in contaminant transport modelling and groundwater source protection modelling in Ontario..

In addition to numerical modelling, Ms. Calder has developed software tools, including development of T2GGM, a gas generation model coupled to the two-phase flow model TOUGH2; and development of a 1D hydro-mechanical model coupled with T2GGM to simulate glaciation events in a hydrogeologic model. Ms. Calder also develops model pre- and post- processing software tools to support Geofirma’s modelling work within the mView application framework.