Our Team

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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.

ACT employs the best and the brightest in the industry. Our service group is trained extensively on all required programs, as well as additional programs ACT has put into place internally. ACT 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, President

Walter H. Singer, President

President and Founder of ACT, Walter H. Singer has led the company to become a market-leading environmental presence in California. ACT has experienced consistent financial growth while having an exemplary…

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Tim Smith, CEO

Tim Smith, CEO

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 and their markets while…

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Pasquale M. Paduano, Vice President Of Operations

Pasquale M. Paduano, Vice President of Operations

Pasquale has over 30 years of successful operations management and sales leadership experience in the environmental management services industry. He is responsible for operational excellence for all ACT Branches and…

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Krista Wood Harsono, Director Of Compliance

Krista Wood Harsono, Director of Compliance

As ACT’s Corporate Compliance Director, Krista brings more than 12 years of experience in the environmental industry. Under Krista’s guidance ACT has received several commendations and awards for its stellar…

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Vince Cavaliere, Director Of Sales Southern California & Southwest

Vince Cavaliere, Director of Sales Southern California & Southwest

Vincent M. Cavaliere (Vince) joined ACT on August 15, 2011 and has over 22 years of environmental sales and marketing experience. Over the years, he has successfully managed annual sales…

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Adam Brandin, Director Of Sales Northern California

Adam Brandin, Director of Sales Northern California

Adam has been with ACTenviro for over 13 years and has been instrumental in the continued growth of the company, including the expansion of ACT’s lines of service. Adam has…

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Russ Cowperthwaite, Transportation Manager

Russ Cowperthwaite, Transportation Manager

Russ started with ACT in January 2015. Russ’ career in the transportation industry began over 30 years ago as a heavy duty diesel truck technician and he developed into a…

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John Smrdeli, General Manager – San Jose

John Smrdeli, General Manager – San Jose

John has 28 years of operations and sales experience working for several different firms in all aspects of the hazardous waste management industry. After obtaining his Bachelor of Science degree…

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Jeff Ruhl, Branch Manager – San Diego

Jeff Ruhl, Branch Manager – San Diego

Jeff Ruhl started his career in the environmental industry with ACT over 13 years ago. Jeff was hired as a technician but quickly moved through the ranks, working as a…

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Daniel Busbee, Branch Manager – Los Angeles

Daniel Busbee, Branch Manager – Los Angeles

Dan Busbee has over twenty four years of experience in the hazardous waste management industry, including; transportation scheduling, personnel training, emergency response, site remediation, laboratory packs, and drum and bulk…

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Jeff Smith, Branch Manager – Albuquerque TSDF

Jeff Smith, Branch Manager – Albuquerque TSDF

Jeff started in the environmental industry over twenty years ago, working as a field technician specializing in oil spill prevention and cleanup on the oil fields in Prudhoe Bay, Alaska.…

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Bruce Hehemann, Branch Manager – Albuquerque

Bruce Hehemann, Branch Manager – Albuquerque

Bruce Hehemann started his hazardous waste career in 1988 as a lab pack / depack chemist. He began work as an outside service manager in 1991. Before coming to ACTenviro,…

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Keo Chen, Branch Manager – Portland

Keo Chen, Branch Manager – Portland

Keo Chen started his career in hazardous waste management with Clean Harbors in 2013 as a labpack chemist, after receiving his Bachelor of Science degree in chemistry. Keo quickly moved…

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Frank Sanchez, CHMM, Branch Manager – Phoenix

Frank Sanchez, CHMM, Branch Manager – Phoenix

Frank is responsible for business development and operations in Arizona. He has over 30 years’ experience in the environmental services and hazardous waste management industry, dating back to 1984, when…

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Tobi Moore, GM For Denver

Tobi Moore, GM for Denver

Tobi joined ACT in December 2014 and is currently the General Manager of ACT’s Colorado office, handling our 10-day Transfer Station. During her 21 years in the field of Environmental…

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Keith Munnerlyn, Branch Manager – Redlands

Keith Munnerlyn, Branch Manager – Redlands

Keith Munnerlyn has 32 years’ experience in the environmental field. He has vast knowledge of tankers, roll-offs, project management, heavy equipment operations, emergency response and tank cleaning. Keith has also…

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Fernando Montes, Branch Manager – El Paso (Chaparral, NM)

Fernando Montes, Branch Manager – El Paso (Chaparral, NM)

Fernando Montes began his career in the hazardous waste business in California 24 years ago, originally working in the field as a Technician and Chemist. Fernando subsequently moved to New…

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Chris Dean, Contractor Manager

Chris Dean, Contractor Manager

Chris' promotion to Onsite Contract Manager is well deserved based on his tenure since 2006 as Characterization Chemist. He joined ACT in February 2012 at Sandia. Prior to 2006, he…

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