Todd Creamer, P.G.

Todd Creamer is a Principal Geologist based in New England with more than 24 years of experience and is chairman of Geosyntec's international vapor intrusion (VI) practice.

Todd Creamer is a Principal Geologist based in New England with more than 24 years of experience and is chairman of Geosyntec's international vapor intrusion (VI) practice.


His work is focused on the characterization of and remediation strategy for contaminated industrial, institutional, and residential properties. He specializes in VI and LNAPL behavior in soils; complex regulatory negotiation; construction of conceptual site models (CSMs); VI field methods development; VI numerical modeling (e.g., Johnson & Ettinger and lateral diffusion); LNAPL mobility modeling; and geological site characterization.

Todd's client service has included oversight, strategy formulation, and participation in public outreach for the United States Department of Defense (DoD), and litigation support for former industrial facilities with historical releases of chlorinated solvents or LNAPL to the subsurface and groundwater impacts extending into residential areas. He has conducted extensive field investigations at these sites under public scrutiny.

Through applied research, technical training sessions to agencies and presentations in public forums, he contributes significantly both to the national discussion on VI and to the availability of new assessment tools such as quantitative passive samplers, high volume sub-slab sampling, and building pressure control. He was an invited instructor for the Massachusetts Licensed Site Professional Association's for-credit course on VI, reaching 500 professionals.

Contact Todd Creamer at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-603-205-8054.

Career Summary of Todd Creamer, P.G.

  • Specialties: Contaminated media investigations and assessments; Subsurface Vapor Intrusion Modeling and Assessments; Subsurface Vapor Mitigation System Design and Implementation; Conceptual Site Model (CSM) Development; Regulatory Strategy and Cleanup Goal Development; Environmental Forensic Studies; Data Interpretation, Synthesis, Visualization, and GIS
  • Practice Areas: Contaminated Site Assessment and Cleanup, Environmental Management, Building Health
  • Disciplines: Earth Sciences, Environmental Sciences
  • Education: M.S., Geology, North Carolina State University, 1998; B.A., Geology and Native American Studies, University of Rochester, 1993
  • Registration: Professional Geologist, California No. 8365; Pennsylvania No. PG005324; Wyoming No. 3532

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