We have worked on hundreds of linear oil and gas infrastructure projects throughout the United States including new pipelines, pipeline reconstructions or repairs, corridor vegetative maintenance, right-of-way expansion, pipeline abandonment, access road construction, and emergency response.



Our environmental team can provide valuable and cost-saving services on the front end of a project through vigorous spatial and site environmental constraint analyses, collect and analyze site specific environmental data during the design process, assist with the myriad of environmental regulations and permits that govern these linear projects, and conduct final project closure monitoring to meet regulatory requirements and client success objectives.

Additionally, GEI has the depth and breadth of engineering resources to staff projects and programs from the initial conceptual engineering, preliminary site investigations and analyses phases through Pre-Front End Engineering Design (FEED), FEED, detailed design, and construction implementation to completion of the project.

Capital and Linear Support Services
  • Access Road Design
  • Air Quality and Noise Studies
  • Aquatic Ecology Surveys
  • Compressor Station/Civil Engineering and Permitting
  • Construction Management Inspection
  • Cultural Resource/Archaeology Reviews
  • Ecological Assessments
  • Encroachment Permitting
  • Environmental Assessments
  • Erosion and Sediment Control (ESC) Plans and Permitting
  • Highway Occupancy Permitting
  • Threatened and Endangered Species Surveys and Permitting
  • Preparedness, Prevention, Contingency (PPC) Planning
  • Pipeline Design
  • Routing Alternatives Analysis Cost Evaluations and Financial Proformas
  • Siting Support
  • Stormwater Permitting and Post-Construction Stormwater Management
  • Surface Water Investigations
  • Vegetative Surveys
  • Wetland Delineation and Permitting
  • Wetland Mitigation Design, Construction, and Monitoring



Our ability to develop innovative solutions and work as part of an integrated project delivery team provides valuable results every step of the way.

By identifying potential project hurdles early in the process, we can develop a strategic project planning and implementation path to avoid or address these obstacles in the most efficient manner possible.

Integrated Project Delivery
Routing & Siting

GEI conducts vigorous spatial and site analyses to identify preferred and alternative sites or routes that meet our client’s goals and comply with regulatory guidelines.

Permitting, Design & Construction

To permit, design, and construct linear infrastructure projects, we use proven methods of coordination and collaboration with strict management of quality, value, schedule, and cost.

Restoration, Monitoring & Maintenance

Our involvement in a project doesn’t end after construction. We continue to monitor sites to comply with agreed-upon regulatory conditions and detect any unforeseen impacts.



Significant economic value can be realized through a coordinated and comprehensive approach to addressing the design engineering, environmental, geotechnical, and construction-related issues on linear projects.

Through our in-house resources, GEI provides highly integrated environmental consulting, design, and construction services which add value to our clients’ development programs. This has benefited our clients through more efficient coordination, ultimately paying dividends in quality, schedule, and cost savings.

Featured Projects

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I worked with GEI on a challenging, multi-party remediation project. GEI’s can-do attitude and expertise makes them a value to any project.

Gordon Terhune

Department of Natural Resources

GEI experts have brought tremendous value to our large, challenging multi-PRP project by developing the long-term strategy.

John A. Frankenthal


GEI has both field level practical skills and excellent technical knowledge. GEI is a team player whose abilities are recognized and respected.

Steve Mulkey

Valero Energy Corporation

Exceptional at mastering complex data, but can communicate the significance of that data to all members of a team.

Robert Miner