PM Environmental
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Stephen Zayko, P.E.,Q.C.

Manager - Technical Services / Senior Engineer

Stephen Zayko is a Senior Engineer at PM Environmental, Inc. and has served clients on over 30 states, nine EPA Regions and six countries since 1992. He specializes in Innovative Technologies, Risk Assessment, Statistics, Modeling, Corrective Action, Remedial System Design and Bioremediation. Zayko has developed and programmed Risk Assessment software, managed groundwater flow modeling activities, assisted with design and installation of Biowalls, Permeable Reactive Barriers (PRBs), and Slurry Walls and was a member of the Rapid Response Environmental Site support team for BP Deepwater Horizon (MC252) Incident. His recent focus includes addressing environmental restoration, or risk minimization techniques. He participated in the Michigan Criteria Stakeholder’s Advisory Group in 2014 to assist the State of Michigan with updates to generic cleanup criteria and in 2015, was chosen to serve on the Michigan Department of Environmental Quality Response Activity Review Panel.

Areas of expertise

  • Senior project manager response activity/corrective measure projects
  • Senior project manager for Brownfield Redevelopment projects. 
  • Senior project manager for Phase II Environmental Site Assessment projects. 
  • Senior project manager for Baseline Environmental Assessment (BEA) projects
  • Senior project manager for Leaking Underground Storage Tank (LUST) projects, including removal and in-place closures, contaminant delineation, and remediation using RBCA procedures
  • Expert in compliance with the Michigan Natural Resources and Environmental Protection Act (NREPA), P.A. 451 of 1994, parts 201, 211, 213, and 215 as well as Parts 111 and 115
  • Expert in applying for land use based closures
  • Expert in characterization, management, and remediation of sites with Non-Aqueous Phase Liquids (NAPL)
  • Expert in Incremental Sampling Methodology (ISM) characterizations. 
  • Preparation and review of land use based remedial action plans
  • Preparation and review of generic and site-specific risk assessments
  • Experience with Storm Water Pollution Prevention Plans (SWPPP)
  • Experience with Ohio EPA Voluntary Action Plan (VAP) projects
  • Experience with National Environmental Policy Act  (NEPA) projects
  • Experience with hazardous material assessments and decommissioning projects
  • Design of soil and groundwater remediation systems for contaminated sites


  • Wright State University M.S Geological Sciences
  • University of Notre Dame B.S. Civil Engineering


  • Professional Engineer
  • State of Michigan No. 046901
  • State of North Carolina No. 039530
  • State of South Carolina No. 30167
  • State of Tennessee No. 116113
  • State of Florida No. 75152
  • State of Indiana No. PE11400156
  • State of Illinois No. 062.066031
  • State of New Jersey No. GE51659
  • State of New York No. 093526-1
  • Professional Geologist Certified Professional Geologist No. 53690


  • OSHA 29 CFR 1910. 120 8-hour Supervisor Training
  • OSHA 29 CFR 1910. 120 40-hour Training for Hazardous Material Cleanup Operations
  • Meets the definition of Environmental Professional as defined in § 312.10 of 40 CFR 312

Continuing Education

  • Biogeochemical Reductive Dehalogenation and Metals Stabilization and Battelle, RTM-CSIA-MNA of Chlorinated Solvent Plumes, BP-ARCO Control of Work
  • Chevron-Environmental Project Development and Execution Pro-cess
  • Environmental/Engineering Geology and Land Use Planning
  • The Practical Side of Environmental Compliance and Risk Analysis
  • AIPG Light Non-Aqueous Phase Liquids (LNAPL) workshop
  • AIPG GSI Characterization, Evaluation and Compliance