Sarah Schiess

Sarah Schiess is a Principal Hydrogeologist based in Melbourne, Australia focused on the characterisation and remediation of soil and groundwater.

Sarah is a specialist in the management of environmental liability as it relates to large portfolios of sites.  She is also a specialist in quantitative hydrogeologic assessments with extensive experience in a wide range of environmental, mining, oil industry and water resource projects.  Her areas of technical expertise include multi-phase flow through porous media (LNAPL and DNAPL), site investigation/remediation, groundwater and contaminant transport modelling, quantitative evaluation of groundwater hydraulics, and contaminant fate and transport.  She has worked within Australian, US and New Zealand regulatory environments.  The types of contaminated sites that she has worked on include; oil industry; agricultural; timber treatment; gas works; landfills; US CERCLA and RCRA sites; industrial facilities; and defense facilities.  She has also worked on numerous mining and water supply projects in both the US and New Zealand.

Sarah has worked as both a consultant and within industry as an Environmental Manager for a multinational oil company.  In her role as Environmental Manager, she was responsible for development and evaluation of lifecycle strategies for a large portfolio of contaminated sites in order to minimize liabilities while meeting all regulatory requirements in a timely, cost effective manner.  This required extensive stakeholder engagement (with the business, lawyers, regulators, land owners and occupiers and the public) as well as a strong technical understanding of the all aspects of the sites’ conditions.

As an environmental consultant, Sarah has developed Conceptual Site Models for a number of complex contaminant and hydrogeologic conditions through the use of innovative field techniques and data evaluation tools.  This has allowed the regulatory close out of a number of sites which were previously problematic and costly to the client.

Contact Sarah Schiess at This email address is being protected from spambots. You need JavaScript enabled to view it. or +61-427-083-346.

Career Summary: Sarah Schiess

  • Education: M.S., Civil Engineering, Colorado State University, 1986; B.A., Geology, University of Colorado at Boulder, 1980
  • Practice Areas: Contaminated Site Assessment and Cleanup
  • Disciplines: Earth Sciences, Hydrogeology
  • Specialties: Site Investigation and Remediation; Groundwater Assessments; Development of Conceptual Site Models; Oil Industry Facilities
  • Registration: Member of Australasian Land and Groundwater Association
Geosyntec Consultants
Geosyntec is a specialized consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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