Skelly and Loy, Inc., / A Terracon Company Email Format

Environmental ServicesPennsylvania, United States51-200 Employees

Skelly and Loy, established in 1969, is a privately owned, mid-sized environmental services and engineering firm based in Harrisburg, Pennsylvania, with multiple offices in the Mid-Atlantic. The company serves public and private sector clients in the United States and abroad, delivering a broad range of services that cover mining, civil, and environmental engineering, as well as NEPA compliance studies. Its work encompasses natural resource management, including wetlands, aquatic studies, and wildlife, along with environmental, mining, and wastewater permitting, and investigations into noise and air quality. Additional offerings include waste management investigations and remedial design, archaeological and cultural studies, digital information management, and the sale, installation, operation, and maintenance of water, wastewater, and remediation treatment systems. 

The firm targets a diverse customer base and leverages interdisciplinary expertise to support projects across evolving markets, with a footprint that extends beyond the Mid-Atlantic to national and international engagements. A recent development noted in news reports indicates that Home Depot acquired Skellyloy in March 2024.

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