Jason B. Flagg, PE, CHMM

Technical Director



Real Estate and Developmental Due Diligence Support

Site Assessment, Investigation, and Remediation

Vapor Intrusion Investigation and Mitigation

Treatment System Operation, Maintenance, Monitoring, and Optimization


MPA, Environmental Policy and Natural Resource Management - Indiana University at Bloomington

MS, Environmental Science - Indiana University at Bloomington

BS, Environmental Engineering - Syracuse University

Jason B. Flagg, PE, CHMM

Technical Director

Mr. Flagg is a client-focused environmental project manager with over eighteen years of experience in various aspects of environmental consulting, specializing in due diligence and the investigation and remediation of complex sites.


A Certified Hazardous Materials Manager (CHMM) and licensed Professional Engineer (PE) in New Jersey, Mr. Flagg has led all aspects of remedial design and implementation using various technologies including excavation and disposal, capping, multi-phase extraction, soil vapor extraction, air sparging, in situ chemical oxidation, enhanced bioremediation, sub-slab vapor venting systems, and implementation of engineering and institutional controls. Mr. Flagg has a strong command of all aspects of the New Jersey regulatory environment, including the technical regulations and technical guidance documents associated with the New Jersey Industrial Site Recovery Act (ISRA) and New Jersey’s Technical Requirements for Site Remediation. Within the New Jersey regulatory program, he has navigated all phases of site assessment and remediation, from preliminary assessment through site investigation, remedial investigation, remedial action, and post-remedial monitoring, including compliance with remedial action permits.

representative projects
  • Program Manager for property acquisitions by a local utility company. Included due diligence investigations prior to acquisition, followed by investigation, remediation, underground storage tank (UST) permitting and closure, and construction oversight activities in accordance with New Jersey Department of Environmental Protection (NJDEP) requirements. Properties investigated included residential, commercial (fuel oil distribution, commercial laundry, office space), and industrial (manufacturing) land uses.
  • Project Manager for former fossil fuel electricity generating station in northern New Jersey regulated under ISRA. Areas of Concern (AOCs) identified by the PA included the presence of historic fill, numerous documented spills throughout the history of the station, chemical storage areas, current and former generation units and switchyards, petroleum pipelines, former rail lines, former ash ponds, and contaminants of emerging concern.
  • Project Manager for the investigation of per- and polyfluoroalkyl substance (PFAS) impacts to soil and groundwater associated with the application of fire-fighting foam following equipment failure at an electrical substation. The substation is located in an area of regional PFAS impacts in groundwater, requiring forensic analysis to identify impacts specific to the site.
  • Project Manager for the investigation of and remediation of several AOCs at a former fossil fuel generating station in southern New Jersey. Areas of concern included releases of petroleum hydrocarbons (lubricating oil, kerosene, and suspected dielectric fluid), polychlorinated biphenyls (PCBs), volatile organic compounds (VOCs), and 1,4-dioxane. Remedial actions included coordination with United States Environmental Protection Agency (USEPA) for PCB cleanup under self-implementing cleanup plans in accordance with the Toxic Substances Control Act (TSCA).
  • Supported the design and implementation of a Superfund remediation project at a former waste recycling facility located in Sayreville, New Jersey. The remedial action consisted of excavation and disposal of over 100,000 tons of soil and debris impacted with various contaminants. Contaminated soil was excavated, segregated according to waste stream, and disposed at multiple permitted facilities via rail. Site complexities required deep excavations using a sheet pile cofferdam and trench boxes, installation of a modular bridge for construction traffic, and wetland disturbance and restoration.
  • Interstate Technology and Regulatory Council. “Implementing Advanced Site Characterization Tools (ASCT-1)” Dec. 2019. Team member and co-author of published regulatory guidance document.