NTM Firm Principals
Ms. Donna Newell earned her B.S. degree in Civil Engineering and M.S. degree in Environmental Engineering from Penn State University and holds professional engineering licenses in Pennsylvania and New York. Her graduate research included predicting abutment scour in Pennsylvania streams. Ms. Newell served as an adjunct professor with PSU, where she instructed a graduate level course on hydraulics, and she has also taught portions of the PE review course for different organizations. She currently manages a contract for developing and instructing numerous technical training courses related to highway drainage and hydrologic/hydraulic analysis.
Ms. Newell has a strong background in civil engineering with an emphasis on hydrology and hydraulics. Her design experience includes sizing of hydraulic structures, bridge and culvert modeling, bridge scour analysis, streambank stabilization, and safe yield investigations. She has performed studies and provided quality assurance reviews of studies for projects from Maine to Virginia, with much of her focus being in Pennsylvania. Currently, she plays a key role at PennDOT’s Bureau of Project Delivery where she performs statewide quality assurance reviews, assists with writing policy, and acts as a liaison between PennDOT and PA DEP.
Ms. Newell has served on a national panel for scour assessment at bridges. She was named one of Central Pennsylvania’s top business professionals under the age of 40 in 2007.
Ms. Rachel Tereska earned her B.S. and M.S. degrees in Civil Engineering from The Pennsylvania State University and holds professional engineering licenses in Delaware and Pennsylvania. She served as a research assistant at PSU, where she studied stream restoration techniques and developed monitoring criteria for restoration sites.
Ms. Tereska’s consulting engineering experience includes hydrologic analyses, hydraulic design, and technical instruction. She has performed numerous studies for PennDOT and NYSDOT bridge and culvert projects. Ms. Tereska has prepared hydrologic and hydraulic reports for federal and institutional clients such as the FEMA Hazard Mitigation Grant program and Penn State University. She completed PennDOT’s first two-dimensional hydraulic model analysis of a bridge and has made subsequent presentations on the subject. Her background in technical training includes developing and instructing statewide PennDOT hydrology and hydraulics courses, and instructing a portion of a PE review course for different organizations.
Mr. Jeffrey MacKay earned his B.S. and M.S. degrees in Civil Engineering from Drexel University and holds professional engineering licenses in Maryland, New York, and Pennsylvania. As a graduate student, he researched the effects of sediment pollution from construction sites on benthic stream habitat.
Mr. MacKay’s professional background has included a combination of teaching, research, and providing engineering consulting services for a variety of projects. He has completed numerous hydrologic and hydraulic studies, drainage and stormwater management designs, and erosion and sediment control plans for various highway and land development projects. As a consultant for PennDOT’s Bureau of Project Delivery, he led the development of training courses in hydraulic modeling; stormwater design and permitting; and erosion and sediment control design. In addition to instructing these courses, he also instructs courses in hydrologic modeling and waterway permitting. Mr. MacKay has also instructed the water resources and environmental portions of a PE review course in eight different states.
Mr. MacKay authored PennDOT’s first policy addressing state antidegradation regulations and post-construction stormwater management. He has also made presentations related to stormwater management for various organizations, including PennDOT, ASCE, and ASHE.
Mr. John Newell earned his B.S. and MEng degrees in Civil Engineering from Penn State University where he specialized in structural engineering and bridge design. His consulting engineering experience includes bridge and roadway design on various highway projects. He has been the project manager for several major corridor projects and numerous bridge replacement projects in Pennsylvania. As a Certified Bridge Inspector, he has also completed inspections of state and local bridges in Pennsylvania and the District of Columbia.
Mr. Newell has over 23 years experience with the U.S. Army and Air Force thru his service in the Pennsylvania National Guard. As an Engineering officer he designed and managed construction projects in Alaska, Italy, Israel, Iraq, Qatar, and the United Arab Emirates. He received the Bronze Star in 2003 for service in Operation Enduring Freedom. Lt Col Newell retired from the Pennsylvania Air National Guard in April 2012.