Douglas Larson, Ph.D., P.E., LSP

Doug Larson is a Senior Principal Engineer based in Massachusetts with more than 30 years of experience focused on the investigation and cleanup of hazardous waste sites throughout the United States.

He has designed and managed the implementation of a wide variety of remedial solutions to restore contaminated properties to productive reuse and to protect groundwater resources. Many of his projects address emerging or recalcitrant compounds such as per- and polyfluoroalkyl substances (PFAS), radionuclides and chlorinated solvents. He has been the technical lead on projects involving litigation support, financial risk analysis, and regulatory negotiation. Doug is frequently consulted on Brownfield projects and projects involving environmental liability transfers.

Doug is currently working on the investigation and remediation of PFAS in private and public water supplies, stormwater, and surface water. He has provided regulatory negotiation and community relation support related to PFAS detections in drinking water and is working with state regulators on developing site management strategies to address PFAS migration in groundwater.

Well-versed in state and federal regulations governing environmental site work, Doug has consulted on projects under the control of the United States Environmental Protection Agency and numerous state regulatory agencies.  He has taught at the University of Massachusetts Lowell, is an instructor for the Princeton Groundwater Remediation and Hydrology Courses, and lectures regularly on remediation topics at other short courses and conferences.

Doug manages Geosyntec's Northeast Region, with a combined staff of over 300 engineers and scientists in approximately 20 offices. He served on Geosyntec's Board of Directors for four years, including one term as Corporate Secretary, and is currently a member of Geosyntec's Executive Committee.

Outside of work, Doug has used his engineering skills in the design and construction of water supply infrastructure and schools in Nicaragua and Liberia.

Contact Doug Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-978-263-9588.

Career Summary: Douglas Larson, Ph.D., P.E., LSP

  • Specialties: site investigation and remediation; specialized in situ treatment technologies; environmental liability valuation; environmental management assessment and systems; industrial wastewater treatment planning and design; litigation support
  • Practice Areas: Contaminated Site Assessment and Cleanup, Environmental Management, Water Management
  • Disciplines: Civil Engineering, Environmental Engineering, Geoenvironmental Engineering
  • Education: Ph.D., Civil and Environmental Engineering, Massachusetts Institute of Technology, 1992; M.S., Civil and Environmental Engineering, Massachusetts Institute of Technology, 1989; B.S., Civil Engineering, Carnegie Mellon University, 1987
  • Registration: Professional Engineer, Massachusetts No. 41447; Pennsylvania No. 074139; Rhode Island No. 7332; Licensed Site Professional, Massachusetts No. 8237;

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Geosyntec Consultants
Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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