Leaders About Us


Meet ERC. Here are just a few of the people you may encounter while working with ERC. There are many more who will work together to make your goals come to fruition.

  • Kenneth D. Lefever


    Ken joined Environmental Recovery Corporation in 2010 with over 8 years of management experience with the second-largest waste company in the U.S. and over 18 years of leading growth-oriented companies. His unique understanding of finance, sales, operations, and technology keeps ERC on the cutting edge of the environmental industry.

  • Mark Rothenberger

    Chief Financial Officer

    Mark is a certified public accountant and joined ERC in 2017 with 18 years of accounting and finance experience from positions with a large public accounting firm and a $3.5 billion publicly traded company. His expertise in systems and accounting processes will keep the Company growing and supporting the servicing of our valued customers.

  • Bryan Fink

    VP of Operations

    Bryan joined ERC in 2014 with over 15 years of management experience with the 2nd largest waste company in the U.S. Bryan is results driven, with strong leadership and a proven ability to improve the operating performance and profitability of a company. His attention to operations planning and human resource management keeps ERC on the forefront of the environmental industry.

  • Kermit L. Burkholder

    Director of R&D

    Kermit came to work for ERC in September of 1989, with his highly recognized skills as a chemist and extensive knowledge of engineering processes. Kermit directs our processing innovations and heads our product development center. In the over 20 years Kermit has been with us, he has provided us with invaluable technology.

  • Hannah E. Fritz

    Health & Safety Manager

    Joining the ERC team in 2013, Hannah worked as an analyst in the DEP certified lab for 3 years before earning her Masters of Science in Emergency Management from Millersville University. Hannah then transitioned into the newly-created role of Health & Safety Manager. Her innovative approach drives ERC to blend commerce, compliance, and education.

  • Peter C. Haiges

    GM of Environmental Services Division

    Pete brings over 10 years of experience in sales and operations management. He brings attention to detail and a clear view of the "big pictureā€¯ to the forefront of our growing operation. He continually focuses on improving our service to better assist our customers.

  • David Wilkins

    General Manager of ERC of MD

    Dave joined ERC in 2017 as General Manager of the Maryland division. He has over 25 years of experience in transportation and operations management. Department of Transportation rules and regulations are his expertise and promoting a team atmosphere while encouraging individual growth is his commitment to excellence and service.

  • R. Michael Mulrine

    Environmental Manager

    Mike came to ERC with 21 solid years in the residual and hazardous waste industries. Mike's depth of knowledge of environmental regulations and his management of our premier DEP-certified lab facility ensures a high standard of accurate testing and treatment of material at ERC.


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