Newell, Tereska & MacKay (NTM) Engineering, Inc. is a civil engineering firm that specializes in water resources design, brid ... ge 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, technical course development and training, and transportation and bridge engineering. Established in 2006, NTM currently employs 63 professionals and is located in Dillsburg, Pennsylvania, with a branch offices in State College 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. read more