Our Team


  • David A. Hals, PE, PLS, PP, CME
    President and founder

    Dave is the President and founder of Schwanewede/Hals Engineering Company. He is a graduate of New Jersey Institute of Technology with a BS & MS in Civil Engineering (1982, 2012), and Paul’s Smith College, Associate of Applied Science (1977). Dave is licensed as a Professional Engineer, Professional Land Surveyor, and Professional Planner in the State of New Jersey. Dave is also a Certified Municipal Engineer. He has been in business since 1988. Dave has been practicing civil engineering and land surveying since 1977. Dave has extensive experience with the planning, design, permitting, inspection, and construction management of all types of municipal engineering, site planning, and subdivision projects. He has been the municipal, consulting, planning board, and zoning board engineer of several municipalities throughout Northern New Jersey. He has testified before more than 100 municipalities in the State of New Jersey. Dave has been accepted as an expert in all three licenses before Planning Boards, Zoning Boards of Adjustments, Boards of Health, and Superior Court in Bergen, Morris, and Passaic Counties. Dave is the president of the Long Hill Office Plaza Condo Association in Oakland, New Jersey.

  • Joseph F. Vince, PE, P.P., CME
    Associate

    Joe is a senior engineer at Schwanewede/Hals Engineering. He is a graduate of Fairleigh Dickinson University with a BS in Civil Engineering Technology. Joe is licensed as a Professional Engineer and Planning in the State of New Jersey and is also a Certified Municipal Engineer. He has been practicing civil engineering, land surveying, and planning since 2005. Joe has worked for consulting engineering and design/build engineering and construction companies in the past. He has extensive experience with the planning, design, permitting, inspection, and construction management of residential and commercial site plans, subdivisions, environmental, community association, and municipal projects. He also has experience with structural and forensic inspections. Joe has testified before numerous Planning, Zoning, and Land Use Boards throughout the State of New Jersey. He has also represented Municipal Planning and Zoning Board’s as the Board Engineer. Joe assists with the municipal reviews. Joe is currently pursuing his Bachelor of Science degree in Surveying Engineering Technology at NJIT and his professional land surveyor’s license. He is the president of the condo association where he lives.

  • Thomas E. Chadwick, PLS
    Senior Land Surveyor

    Tom is a senior land surveyor at Schwanewede/Hals Engineering. He is a graduate of Paul Smith’s College with an Associates of Applied Science in Forestry and Surveying. He is a licensed Professional Land Surveyor in the State of New Jersey and a member of the New Jersey Society of Professional Land Surveyors. Tom has been practicing land surveying since 1979 and has been licensed since 1988. He has extensive experience in boundary surveys, location surveys, topographic surveys, ALTA/NSPS surveys, route surveys, wetlands surveys, hydrographic surveys, tree surveys, elevation certificates, and construction layout.

  • Gary R. Callahan
    Project Coordinator

    Gary is a project coordinator and municipal representative/inspector at Schwanewede/Hals Engineering. He attended both William Paterson College and New Jersey Institute of Technology. Gary has been practicing in all aspects of civil engineering, surveying, construction project management, and supervision since 1972. Gary assists with municipal reviews, coordinates and oversees capital improvements projects, and is responsible for the yearly municipal map updates. He regularly works with town residents and business owners to address individual problems and concerns during the construction process.

  • Mark Nicol
    Engineering Technician

    Mark is an engineering technician at Schwanewede/Hals Engineering. He has been involved in the design and drafting of civil and structural engineering projects since 1985. He has experience with all phases of site plans, subdivisions, surveys, and municipal projects. He also has experience with performing surveying field tasks.

  • Paul Klohe
    Engineering Technician

    Paul is an engineering technician and community representative/inspector at Schwanewede/Hals Engineering. He is a graduate of Fairleigh Dickinson University with a BS in Civil Engineering Technology. He has been working for construction and engineering companies since 2002. Paul has experience in design and drafting and inspection of civil and structural engineering projects. He has assisted in managing construction projects ranging in cost up to 1 billion dollars. Paul has completed all New York State home inspector training courses.

  • Dillon Edelhauser
    Survey Technician

    Dillon is a survey technician at Schwanewede/Hals Engineering. He has been practicing land surveying since 2005. He has experience with all aspects of land surveying field work including boundary surveys, location surveys, topographic surveys, ALTA/NSPS surveys, route surveys, wetlands surveys, tree surveys, elevation certificates, construction layout, GPS data collection, and laser scanning.