Our Team

Meet Our Team

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 20 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…

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 and their markets while…

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. Tyler has spent more than two decades financing…

Pasquale M. Paduano

Vice President of TSDF and Fleet

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…

Shawn Ball

Vice President of Sales

Shawn has spent over 18 years in the environmental industry, with experience in operations management and sales leadership. He also has extensive experience with business development and creating successful…

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…

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…

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,…

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…

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…

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…

Chris Dean

Contractor Manager

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…