Faculty & Staff

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Dr. Tom Sale

Associate Professor

Phone: (970) 491-8413

Email: tsale -at- engr.colostate.edu

Research interests:

  • Research and consulting activities are focused on anthropogenic releases of contaminants to subsurface environments and their subsequent transport, fate, and management. Specific areas of interest are pragmatic expectations for Nonaqueous Phase Liquid (NAPL) remedies and passive strategies for management of NAPL releases.


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Maria Irianni Renno

Research Associate II

Phone: (970) 491-8647

Email: maria.irianni_renno -at- colostate.edu

Research interests:

  • Maria is fascinated by the complexity associated with metabolic processes at a molecular level. Microorganisms are of particular interest to her because of the diversity of metabolic processes that exist in that kingdom and the potential technological applications that can be derived from such complex beings. Her research focuses in furthering the understanding about microbial processes occurring in the subsurface of hydrocarbon impacted sites. Her goal is to discover and optimize biochemical systems that can be successfully implemented as remediation technologies.

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Andrea Hanson

Research Scientist I

Phone: 970-491-8430

Email: andrea.hanson -at- colostate.edu

Research interests: 

  • Coupling laboratory- and field-scale experiments to assess contaminant biodegradation pathways in natural and engineered systems

  • Microbial community proteomics
  • Deep subsurface microbial physiology and ecology

  • Advanced molecular biomarker development

  • High-resolution mass spectrometry-based analytical techniques

  • Oil and gas produced water geochemistry and


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Kayvan Karimi Askarani

Research Scientist

Phone: 970-213-7419

Email: kayvan.karimi_askarani@colostate.edu

Research Interests:

  • Sensor-based groundwater monitoring
  • AI/ML application in environmental management
  • Natural source zone depletion monitoring
  • Cloud computing
  • Advanced computational method for NSZD estimation

Joe Scalia

Assistant Professor

Phone: 970-491-3774

Email: joseph.scalia@colostate.edu

Research Interests:

  • Environmental Geotechnics
  • Geoenvironmental Engineering
  • Flow and Contaminant Transport in Saturated & Unsaturated Soils
  • Geosynthetic Clay Liners
  • Clay-Polymer Composites
  • Mine wastes

Associated Faculty


  • Tom Simpkin

Former Faculty & Staff

  • Hamid Sharifan
  • Ray Buzeta
  • Nasim Pica
  • Helen Dungan
  • Robert Young
  • Mitchell Olson
  • Gary Dick
  • Dave Gilbert (2002-2008)
  • Fred Marinelli (2004-2005)
  • Jack Martin (2012-2013)
  • Gary Amato (2005-2007)
  • Ellen Daugherty (2011-2012)