Building trust coast to coast

ACT: Your Partner in
Environmental Mitigation
Since 2000

Built on a foundation of excellence

ACT’s story begins in Southern California. As the Inland Empire underwent rapid development in the 1990s, we tackled complex environmental challenges that would define our expertise. Soon after, the oil-rich territories from Orange County to Los Angeles presented new environmental hurdles, pushing us to innovate and expand our capabilities.

What started as regional solutions for methane mitigation and vapor intrusion quickly grew into something bigger. Today, we bring decades of experience and proven solutions to complex environmental challenges nationwide, protecting communities and enabling supporting development across America.

Built on a foundation of excellence​

ACT’s story begins in Southern California. As the Inland Empire underwent rapid development in the 1990s, we tackled complex environmental challenges that would define our expertise. Soon after, the oil-rich territories from Orange County to Los Angeles presented new environmental hurdles, pushing us to innovate and expand our capabilities.

What started as regional solutions for methane mitigation and vapor intrusion quickly grew into something bigger. Today, we bring decades of experience and proven solutions to complex environmental challenges nationwide, protecting communities and enabling supporting development across America.

Engineering integrity

Every calculation, design, and installation must meet our high standards. We fully stand behind our engineering because lives and livelihoods depend on it.

End-to-end Ownership

Accountability can’t be delegated. That’s why we keep every aspect of your project under our direct control, from initial design to final implementation. Your success is our responsibility.

Client-first service

If our clients aren’t satisfied, we haven’t been successful. The entire ACT team makes clear communication and attentive service a requirement at every step.

Efficient delivery

Complex projects shouldn’t mean complicated execution. By integrating design and construction expertise under one roof, we deliver sophisticated solutions without unnecessary delays or complications.

Let’s talk about your project.

The values we stand by for every single project

We pride ourselves on being a true design-build firm and offer something rare in environmental mitigation: complete integration of engineering expertise and hands-on construction capability.

Whether working from our designs or those of other environmental engineers, we deliver excellence in mitigation systems.

The values we stand by for every single project

We pride ourselves on being a true design-build firm and offer something rare in environmental mitigation: complete integration of engineering expertise and hands-on construction capability.

Whether working from our designs or those of other environmental engineers, we deliver excellence in mitigation systems.

Engineering integrity

Every calculation, design, and installation must meet our high standards. We fully stand behind our engineering because lives and livelihoods depend on it.

End-to-end Ownership

Accountability can’t be delegated. That’s why we keep every aspect of your project under our direct control, from initial design to final implementation. Your success is our responsibility.

Client-first service

If our clients aren’t satisfied, we haven’t been successful. The entire ACT team makes clear communication and attentive service a requirement at every step.

Efficient delivery

Complex projects shouldn’t mean complicated execution. By integrating design and construction expertise under one roof, we deliver sophisticated solutions without unnecessary delays or complications.

Let’s talk about your project.

Meet the team bringing expertise
to every ACT project

Meet the team bringing expertise to every ACT project

What makes us different

Unlike firms that only design or install, we deliver complete vapor mitigation solutions. Our integrated approach eliminates handoff risks, communication gaps, and split responsibility. From initial engineering through final verification, you work with one expert team fully accountable for your project’s success.

Full-service capability

Unlike other firms, we hold comprehensive professional engineering, electrical, plumbing, and general contracting licenses. 

Dedicated team

With state-recognized engineering staff and zero subcontracting, we maintain complete control over your project’s success.

Regulatory expertise

We’ve successfully managed environmental challenges across diverse regulations. 

Part of the
FullTerra Family

ACT is a proud member of FullTerra, the nationwide leader in environmental mitigation services.

Together with our sister companies, we provide comprehensive design-build-monitor solutions that protect properties and people across all 50 states.

Our California roots have grown into nationwide reach

As the environmental industry has grown, so have we. We’ve successfully designed and installed soil, groundwater, and vapor mitigation systems in 25 states.

  • Design / Installation
    Designed and installed systems across the nation
  • Offices
    Corporate HQ in Irvine, CA with an office in San Ramon, CA

Complex sites require sophisticated solutions.

Join developers and property owners nationwide who trust us with their most challenging environmental projects.

Complex sites require sophisticated solutions.

Join developers and property owners nationwide who trust us with their most challenging environmental projects.