About Us ECS was founded in 1988 with the goal to raise the standards of professional engineering consulting. Today, we are a leader in geotechnical, construction materials, environmental and facilities consulting services. We are employee-owned with more than 3,000 employees in 100+ offices and testing facilities coast to coast. ECS is currently ranked #66 in Engineering News-Record’s Top 500 Design Firms (April 2025), #148 in Engineering News-Record’s Top 200 Environmental Firms (October 2025) and #50 in Zweig Group’s Hot Firm List (May 2025).

2001-10000

Chantilly, VA View on map

• Foundations Drilling Field testing Laboratory testing Ground improvement Geosynthetics Slope stabilization
  Offshore & marine works Excavations & retaining structures Environmental Remediation Geomatics/Surveying Field testing providers Laboratory testing providers Geotechnical Engineering firms Geological Engineering Firms Geoenvironmental Engineering Firms Geomatics Firms Other Consulting Firms
  More

[email protected]

https://www.ecslimited.com