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  • SKELLY and LOY, Inc., A Terracon Company


    Engineering ServicesEnvironmental Consulting

    About Us

    SKELLY and LOY Inc., A Terracon Company (TERRACON) is an Engineering, Geotech and Environmental Company, with a regional Pittsburgh office, that is part a national wide.

    Skelly and Loy, A Terracon Company (S&L) has been delivering mining, civil, and environmental engineering services for more than 50+ years prior to merger. Our Pittsburgh office can help clients in Western Pennsylvania and surrounding communities with environmental services that can help keep projects on-time and on-budget.

    Skelly and Loy 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.

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