Newell, Tereska & MacKay (NTM) Engineering, Inc. is a civil engineering firm that specializes in water resources design, bridge design, and engineering instruction for public and private sector clients. NTM’s core services include hydrologic and hydraulic studies, waterway permitting, stormwater design and permitting, environmental services, technical course development and training, and transportation and bridge engineering.

Established in 2006, NTM currently employs over 80 professionals and is located in Dillsburg, Pennsylvania, with a branch offices in State College, Wayne, and Philadelphia, Pennsylvania. The firm’s four principals—Donna Newell, John Newell, Rachel Tereska, and Jeffrey MacKay—are all licensed professional engineers with master’s degrees in Civil Engineering and a combined 80 years of civil design experience. NTM is also a registered Disadvantaged Business Enterprise (DBE) in Pennsylvania, Maryland, Delaware, and West Virginia and a Women-Owned Small Business (WOSB) with the federal government.

In April 2022, Lotus Environmental Consulting, LLC was acquired by NTM. This additional expertise allows us to offer our clients a full range of environmental services, including environmental investigations and regulatory compliance services.

Engineering

NTM Engineering

Donna Newell

Katherine Farrow

Corey Hovanec

Jeffrey MacKay

The Environmental Scientists team at NTM Engineering conducts comprehensive environmental investigations, ensures regulatory compliance, and manages natural resources. Their work supports the firm's hydrologic and hydraulic studies, stormwater design, and permitting processes by providing critical environmental assessments and facilitating seamless integration of environmental considerations into civil engineering projects.

Environmental Scientists

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Team members

Other teams at NTM Engineering

Engineering Team

Project Management