Meet our team

Tom Head Pittsburgh

Tom Lewis

President & CTO

Tom has over thirty-six (36) years of technical expertise in the areas of environmental, energy and resource recovery technologies. Mr. Lewis is a leader in using activated carbon for nontraditional applications and has successfully treated over 500,000,000 gallons of waste water.  He has developed several patented commercial processes and is currently commercializing the ENVIRO-SHALE PROCESS (patent approved) to recycle frac and acid mine drainage water from the Marcellus and Utica Shale plays.

Mr. Lewis’ achievements include awards from The US Environmental Protection Agency’s Pollution Prevention Program, Department of Energy’s INNCON program as well as numerous published papers on heavy metal recovery via granular activated carbon.


Robert Marmo

Engineering Director

Robert has over 30 years of engineering and management experience in the technical, manufacturing and construction aspects of diverse industries, including environmental and nuclear activities. His background includes product and system design of municipal, industrial, and marine waste treatment systems. Project management experience includes Department of Energy (DOE) and Electric Power Research Institute (EPRI) projects, as well as turnkey design and construction systems of several million dollars each. He has 22 patent awards. Industrial Research publications presented him with an award for his individual home sewage treatment plant as one of the 100 top inventions of the year.

Stacey Chapman Pittsburgh

Stacey Chapman

Marketing and Project Manager

Stacey Chapman has a strong background in Operations, focusing in marketing and project management. She has a management degree from Penn State University.  She has managed large projects for automotive and primary metals industry clients.  Ms Chapman is the lead team member for LES’ marketing strategy.