Karen Kosiarek, P.E.

Karen Kosiarek is a Senior Principal Remediation Engineer based in Colorado with more than 25 years of experience focused on the characterization and remediation of soil and groundwater contamination at industrial and commercial properties, brownfields and sediment sites.

Karen Kosiarek is a Senior Principal Remediation Engineer based in Colorado with more than 25 years of experience focused on the characterization and remediation of soil and groundwater contamination at industrial and commercial properties, brownfields and sediment sites.


Karen's professional practice focuses on finding solutions to clients' problems with complex sites involving multiple parties, including strategy setting, facilitation, agency negotiations and cost allocation. She leads teams tackling complex redevelopments of brownfield sites; challenging site assessments of groundwater, soil, sediment, and soil vapor conditions; engineering design for remediation systems; environmental permitting for remediation projects; construction, construction management, and quality assurance of remediation systems; and remediation system operations and maintenance issues. She is adept at providing expert consultation in support of litigation, environmental liability valuation, and cost allocation and has testified in deposition and at trial.

Karen’s site assessment and remediation work over the years has included volatile organic compounds (VOCs); polychlorinated bi-phenyls (PCBs); metals, including hexavalent chromium; petroleum hydrocarbons and fuel oxygenates such as MtBE and TBA; and emerging compounds such as 1,4-dioxane, perchlorate, and NDMA. Her experience ranges across many state and federal Superfund programs and state voluntary cleanup programs.

As a consultant, Karen's focus is always on meeting her clients’ business objectives by deeply understanding their goals, objectives, risk tolerance, and financial and legal constraints. She relies on her extensive project management and client relationship experience and ability to communicate effectively in strategic and technical interactions with state and local regulators to develop project approaches that are compliant with regulations while meeting the clients' financial and strategic objectives.

Contact Karen Kosiarek at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-406-656-1260.

Career Summary of Karen Kosiarek, P.E.

  • Specialties: Conceptual Site Model Development, Feasibility Studies and Remediation System Design, Regulatory Strategy and Cleanup Goal Development, Brownfield Redevelopment Planning and Design, Environmental Liability Valuations, Sediment Assessment and Remediation, Groundwater Assessment and Remediation; Transactional Due Diligence and Consultation
  • Practice Areas: Contaminated Site Assessment and Cleanup, Environmental Management
  • Disciplines: Civil Engineering, Geoenvironmental Engineering, Geotechnical Engineering
  • Education: M.S., Geotechnical Engineering, University of Texas at Austin, 1996; S.B., Civil Engineering; Massachusetts Institute of Technology, 1995
  • Registration: Registered Professional Engineer, Montana, 20377; Registered Professional Engineer in 2 other states; and Registered Professional Engineer (civil) in 2 other states

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