Professional Associations

  • American Council of Engineering Companies (ACEC)
  • Marcellus Shale Coalition (MSC)
  • PA Chamber of Business and Industry
  • Associated Pennsylvania Constructors (APC)
  • Society of American Military Engineers (SAME)
  • Alternative Fuels Renewable Energies Council (AFREC)
  • American Planning Association (APA)
  • American Society of Civil Engineers (ASCE)
  • American Society of Highway Engineers (ASHE)
  • American Water Works Association (AWWA)
  • PA State Association of Township Engineers (PSATE)
  • Association for Bridge Construction and Design (ABCD)
  • PA Municipal Authorities Association (PMAA)
  • Society for College and University Planning (SCUP)
  • National Society of Professional Surveyors (NSPS)
  • Urban Land Institute (ULI)
  • PA Independent Oil and Gas Association (PIOGA)
  • Ohio Oil and Gas Association (OOGA)
  • Water Environment Federation (WEF)
  • Institute of Transportation Engineers (ITE)
  • PA State Association of Boroughs (PSAB)
  • Independent Oil and Gas Association of West Virginia (IOGA WV)
  • Institute for Sustainable Infrastructure (ISI)

Supporting Communities

RETTEW’s purpose is to improve the quality of life for the communities, employees, and clients we serve.