Weston & Sampson provides a comprehensive solution to your natural gas and liquefied natural gas (LNG) projects. Our in-house design experts have designed more than 100 miles of gas mains and pipelines across the eastern United States. We are experienced in distribution, transmission and economic development projects. In addition, our in-house LNG team is experienced in the siting and design of peak-shaving facilities, small scale merchant facilities, back up fuel facilities for electric generation, end-user facilities, as well as facility upgrades and modifications.

Our services include:


  • Owner’s Engineer / Project Management
  • Code Reviews
  • Network Analysis / Hydraulic Modeling
  • Preliminary Planning / Feasibility Studies
  • Siting Studies
  • Pipeline Route Selection Studies
  • Property Acquisition Support
  • Operations / Maintenance Plans


  • Route Corridor / Site Surveys
  • Design Plans Development (Civil / Mechanical / Electrical / Structural)
  • HDD / Pipeline Design (Transmission / Distribution)
  • Erosion Control / Stormwater Management Design
  • Utility Encroachment Coordination
  • Project Permitting Coordination
  • Project Specifications Development


  • Construction Administration
  • Project Management
  • Site Observations / Resident Representative
  • As-Built Surveys

News & Highlights

Nicholas Humber 2016 EBC Nicholas Humber Environmental – Energy Award - The Environmental Business Council of New England (EBC) announced that Weston & Sampson is the recipient of the Nicholas Humber Environmental –Energy Award for Outstanding Collaboration, in recognition of outstanding public-private collaboration.