Peter Carey has over 35 years of practical experience in civil, geotechnical and environmental engineering on hazardous, industrial, and sanitary landfill projects, geotechnical investigations, hydrogeological investigations, and construction primarily located in the eastern half of the US. He has provided design, geotechnical engineering, permitting, project management or third party review for over 200 significant landfill projects in the United States and overseas.

Peter possesses both a Bachelor of Science degree in Civil Engineering from Rensselear Polytechnic Institute and a Master of Science degree in geotechnical engineering from the University of Connecticut, where he also completed all requirements for a PhD in Civil Engineering with the exception of the submission of a dissertation. He maintains professional engineer’s registration in the state of Ohio and numerous other states.

Since 1999, Peter has served as president of P.J. Carey & Associates, P.C., where he provides specialized engineering services in the field of waste management and geotechnics. He has been actively involved in the design of liner systems founded on solid waste since 1990 and has authored 10 technical articles on landfill design.


Katherine Howard has over 15 years of experience in civil, geotechnical, geotechnical earthquake engineering.  She has worked on various onshore, near-shore and offshore projects including land development, landfills, ports, offshore oil platforms, and water treatment plants on both east and west coasts and internationally.

Katherine holds a Bachelor of Science degree in Civil Engineering from Rensselear Polytechnic Institute and a Master of Science in Civil Engineering from University of California, Berkeley.  She maintains a professional engineer’s registration in the states of California and Massachusetts.