Baltimore Metro-S&L

Terracon's Baltimore Metro office

Skelly and Loy, A Terracon Company (S&L) has been delivering mining, civil, and environmental engineering services for more than 50 years. Our Baltimore Metro office provides clients in the surrounding communities with environmental services to keep projects on-time and on-budget.

Skelly & Loy a Terracon company logo

Founded in 1969, S&L has built a reputation for excellence delivering professional services including mining, civil, and environmental engineering; National Environmental Policy Act (NEPA) compliance; natural resource management; wastewater permitting; noise and air quality investigations; hazardous waste management investigations and remedial design; industrial hygiene studies; archaeology and cultural resources; Geographic Information Systems (GIS); and water, wastewater, and remediation treatment systems. S&L has 120 employees, serving clients from offices in Harrisburg, Pittsburgh, and State College, Pa., and Baltimore Metro, Md.

We help meet clients’ needs by working closely with them throughout the project.

Environmental Services

  • National Environmental Policy Act (NEPA) Compliance
  • Natural Resource Management
  • Wastewater Permitting
  • Noise and Air Quality Investigations
  • Hazardous Waste Management Investigations and Remedial Design
  • Industrial Hygiene Studies
  • Archaeology and Cultural Resources
  • Geographic Information Systems (GIS)
  • Water, Wastewater, and Remediation Treatment Systems



11350 McCormick Road Executive Plaza II, Suite 706 Hunt Valley, MD 21031