Find Your Fit
Our People - Leadership Top Right Lines
Spirit Leadership
Service Leaders
Service Leaders
Our Story - Philosophy Top Right Lines


Our team focuses on building mutually beneficial long-term relationships founded on trust.

Together, our philosophy and core values guide our internal and external interactions to ensure that our services exceed all expectations.

Core Values

Our core values are the heart of our organization and culture.


Our Compass.


Our Purpose.


Our Standard.

Continuous Improvement

Our Mindset.
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Spirit’s History

In 2005, Jess McAngus and Brad Herrin wanted to form a different kind of environmental consulting firm – one not only built on excellent quality but also emphasizes personal relationships and a commitment to meaningful environmental work.

Though we started with only four air quality consultants, today Spirit consists of a diverse team from multiple engineering disciplines and environmental specialties, that works in a broad range of industries across multiple media. Our People are technically proficient, entrepreneurial, curious, driven, and above all, committed to Servant Leadership. We believe what makes us especially unique is the common goal to put others first in the pursuit of achieving the best possible solutions for our client-partners.

We invest in our people and provide regular opportunities for growth both professionally and personally at all stages of career development. In line with our core value of Continuous Improvement, we’ve adopted the mindset to always listen and learn. A culture centered around growth and understanding leads to well-rounded individuals, developed careers, and excellent services.

Jess unexpectedly passed away in 2016. Of our core values, he unapologetically favored Excellence. His legacy lives on in our commitment to Excellence, as we continue to set the “gold standard” in our industry.