Our Team

At ACTenviro, we strive to be at the vanguard of the environmental services industry’s push toward a more sustainable future. We also take pride in our best-in-class level of employee satisfaction. These convictions are reflected not only in the commendations we receive, such as having been recognized as one of Inc. magazine’s top 50 workplaces in the United States in 2017, but, as importantly, in our employees’ deep commitment to providing the best possible service to our customers.

ACTenviro employs the best and the brightest in the industry. Our service group is trained extensively on all required programs, as well as additional programs ACTenviro has put into place internally. ACTenviro provides all personnel, equipment, materials and other resources required to service your environmental needs. Our senior management team has over 200 years of industry experience.

Walter H. Singer


The Chairman and Founder of ACTenviro, Walter H. Singer has led the company to become a market-leading environmental presence in California. ACTenviro has experienced consistent financial...
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Tim Smith


With a diverse skillset ranging from business development and strategic planning to change management and organizational leadership, Tim has spent more than a decade growing companies...
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Tyler Kopet

Chief Financial Officer

Tyler’s wide range of expertise spans not only traditional accounting and finance but acquisitions, human resources, I.T., risk management and strategic planning....
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Pasquale M. Paduano

Director of TSDF

Pasquale has over 30 years of successful operations management and sales leadership experience in the environmental management services industry...
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Shawn Ball

Vice President of Sales

Shawn has spent over 18 years in the environmental industry, with experience in operations management and sales leadership...
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Krista Wood Harsono

Director of Compliance

As ACT’s Corporate Compliance Director, Krista brings more than 12 years of experience in the environmental industry...
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Jeff Ruhl

Branch Manager – San Diego

Jeff Ruhl started his career in the environmental industry with ACT over 13 years ago...
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Frank Sanchez

CHMM, Branch Manager – Phoenix

Frank is responsible for business development and operations in Arizona. He has over 30 years’ experience...
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Fernando Montes

Branch Manager – El Paso (Chaparral, NM)

Fernando Montes began his career in the hazardous waste business in California 24 years ago...
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Chris Dean

Contractor Manager

Chris' promotion to Onsite Contract Manager is well deserved based on his tenure since 2006 as Characterization Chemist...
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