About Us

Our mission is to be the water firm of choice for both our clients and our team.

Here to Do the Best Work of our Lives –

Join Us!

West Yost is hiring! Join our team to feel fulfilled, appreciated, and appropriately challenged. Since 1990 we have been building partnerships and collaborative teams within our groups and areas of expertise. We help you bring your value to the forefront and contribute to creating successes together.

Mission – To be the water firm of choice for both our clients and team

Vision – To be the leader in water in the west

Purpose – To advance water resources for future generations

We are West Yost

Together we take pride in advancing water resources for future generations

  • We support our communities
  • We are water focused
  • We take pride in what we do
  • We strive to become our best
  • We do what’s right
  • We believe in quality
  • We listen
  • We solve challenging problems
  • We see the bigger picture
  • We collaborate
  • We have fun

Leadership Spotlight

Firm Leadership

Charles Duncan, PE, D.WRE, MBA

President and Chief Executive Officer

Greg Chung, PE

Operations Director, Vice President

Elizabeth Drayer, PE

Chair of the Board of Directors and Chief Engineer

Chris Leister, MBA

Business Services Director

headshot of employee Ernie Liu

Ernest Liu, PE

Chief Financial Officer

Abigail Madrone

Business Development Director

Lindsay Smith, PE

Procurement and Program Management Business Sector Leader, Vice President

Area and Sector Leadership

Samantha Adams, MESM

Groundwater Business Sector Leader

Timothy Banyai, PE, PMP

Treatment Business Sector Leader

Daniel Groves, PE, PMP, CISSP

Operations Technology, Cybersecurity, and Resilience Business Sector Leader

Michael Gruenbaum

Area Market Lead – Southern California

Kelye McKinney, PE

Northern California Central Valley Area Market Lead

Corie Moolenkamp, PE

Infrastructure Business Sector Leader

J.P. Davis, PE, CCM, QSP

Construction Management Business Sector Leader

Nick Belmont

Pacific Northwest Area Market Lead

What Matters to Us

At West Yost we actively provide opportunities for growth. We support the health and wellbeing of each team member. Team-led initiatives provide connection and a means to have input into our culture. Through these examples, team members have gained tools, ideas, and access to wellness initiatives.

Diversity Equity and Inclusion

The DEI is a diverse group of team members in varying professions and stages of their careers. Their focus is both internally and externally on how we, as West Yost, support our communities and profession in a manner that promotes and strengthens diversity, equity, and inclusion.

Young Professionals

Three Young Professional group members at a restaurant posing and smiling

Our active Young Professionals group provides networking and professional development opportunities for those of us starting our careers. There are both at work and after work activities, depending on the YP’s preference.

Wellness Working Group

The members of this group bring perspectives and gather insights to reinvest into our team. The team gathers to assess, plan, promote, and implement West Yost’s robust wellness program and activities. We look forward to Active April, where we challenge each other to walk daily, and to upcoming fundraisers with organizations like Feeding America, where together we provided over 40,000 meals in a single month.

Our Founders

West Yost was founded by Bruce West and Jim Yost. This video is a tribute to celebrate their dream of creating a company founded on a “culture of goodness.” Friends before their careers launched, they met at the University of California, Davis while completing their engineering undergraduate studies. Their founding objective was deeply rooted in providing high-quality work, superior client service, and technical expertise. Annually, we gather for our All Staff and Duck Dinner social event in celebration of West Yost.