Derek Jelinek, PE

Derek Jelinek is a Principal Remediation Engineer based in Pennsylvania with more than 20 years of experience focused on engineered solutions to environmental challenges caused by industrial operations, petroleum refining, and distribution, as well as those caused by more recent releases, often from aqueous film-forming foam and pipeline leaks.

Derek Jelinek is a Principal Remediation Engineer based in Pennsylvania with more than 20 years of experience focused on engineered solutions to environmental challenges caused by industrial operations, petroleum refining, and distribution, as well as those caused by more recent releases, often from aqueous film-forming foam and pipeline leaks.


Derek has spent much of his career evaluating, testing, designing, installing, and operating active remediation systems. He employs in situ and ex situ technologies, including air sparge/soil vapor extraction, chemical injections, multiphase extraction, and groundwater recovery; his work often addresses chlorinated solvents, petroleum hydrocarbons, heavy metals, and emerging contaminants such as 1,4-dioxane, and per- and poly-fluorinated alkyl substances (PFAS).

Clients often turn to Derek for help upgrading civil infrastructure to mitigate contaminated groundwater transport, excavating and disposing of contaminated soil, and implementing in situ thermal treatments to address dense-nonaqueous phase liquids (DNAPLs). In the course of this work, he often serves as lead engineer on sites regulated by CERCLA (Superfund) and by states, directing project teams as they design, implement, and operate efficient and effective solutions and as they prepare, deliver, and report on their work.

By looking for better ways to achieve a client’s outcome while controlling costs, Derek has developed several unique solutions during his career. These innovations include a seep-water treatment system that used gravity to eliminate the need for a power source; an in situ chemical reduction strategy that relied on a microgravity study to identify injection locations; and a treatment system that automatically rotated use of redundant equipment to minimize wear and tear while maximizing system uptime. He also developed a new approach to collect and process O&M data from a large refinery’s many operating remediation systems as well as an approach to a Superfund site’s groundwater treatment train that removed an unnecessary tertiary treatment technology involving tanks so that those tanks could be refurbished and repurposed to equalize new inputs during the next phase of remediation.

Whether designing, leading, reporting, or communicating, Derek’s ability to keep all stakeholder interests at heart is what enables him to produce high quality work and successfully implement best-value solutions to his clients’ most challenging problems.

Contact Derek at This email address is being protected from spambots. You need JavaScript enabled to view it..

Career Summary of Derek Jelinek, PE

  • Specialties: Remedial Strategy Development; Remedial Technology Selection; Feasibility/Pilot Testing; Remediation System Design; Remedial Action Implementation; Remediation System Optimization; Process Engineering; Remediation Engineering
  • Practice Areas: Contaminated Site Assessment and Cleanup
  • Disciplines: Environmental Engineering
  • Education: B.S. Civil Engineering, Michigan State University, 2004; B.S. Environmental Studies and Applications, Michigan State University, 1999
  • Registration: Pennsylvania Professional Engineer, PE076981; Delaware Professional Engineer, 16635

Quick Qual

Quick Qual
No pages found in your document. What is a Quick Qual?