Our Mission

Our intent as a company starts with our mission. It guides all of our actions and decisions. Sequoia is dedicated to promoting a spirit of collaboration, inspiring great ideas, igniting innovation, and creating an environment in which great people and great projects thrive.

Geotechnical Engineering

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Environmental Documentation

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Construction Engineering

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Public Involvement

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  • Marsia is dedicated to her profession. She completes all of her tasks with the highest quality. I have worked with her in a variety of capacities and on a variety of projects and have always had successful results. She has my highest recommendation, and I look forward to working with her in the future.  

    Vic Modeer, P.E.
  • Marsia is committed to doing the work she loves and creating an environment that fosters collaboration, creativity and a superior quality of work. In stressful times Marsia is unruffled, bringing stability, clear thinking and a sense of calm to the situation. She treats everyone at every level with respect and shows genuine interest in everyone with whom she interacts. Her integrity, warmth, and inclusive nature inspire effective teamwork and strong ongoing relationships built on trust. Marsia takes her work seriously while infusing fun into the partnership – an ideal combination.  

    Mary Kutheis
  • I have had the luxury of getting to know Marsia early in her career and see her grow into an industry leader. She possesses a rare combination of technical skills with an understanding of customer service. Marsia has built a strong (and well-deserved) reputation as someone with vision, diligence, and honor – someone who gets things done!  

    Patrick Hickox, P.E., S.E.
  • Marsia is a go-getter. She is among the most impressive leaders I know... she leads, inspires, and helps her employees achieve their goals (and personal dreams). Her staff adore her and would walk on fire for her, as would I. Since meeting Marsia some five years ago, I'd consider her one of my favorite and endearing business colleagues. She's first class.

    Laura Schnacht
  • Marsia is a very detail-oriented individual who knows her field very well. She is very reliable and a very sought-out member for a team. She is very conscientious in her work dealings, professional and operates with integrity. I would not hesitate to recommend her or her firm for goetechnical engineering work for a project.

    Ray Steege, P.E.
  • Marsia and I were involved in a very large pursuit and proposal effort recently. She was amazingly responsive to all requests for information and materials -- it was evident that responsiveness is one of her core values. I've also worked with Marsia on ASCE activities and was impressed with her leadership skills. I consider Marsia not only a friend but a role model. She is passionate about the engineering profession and brings energy to everything she does. I wouldn't hesitate to recommend her, and I look forward to working with Sequoia Engineering & Environmental!

    Paula Grahlherr, P.E.
  • Marsia is a true entrepreneur and excellent engineer that fully understands that great engineering is only part of the equation for success. Her engineering knowledge and professionalism are very important, but these are nothing without her innate caring for her clients and their projects. Her experience, caring, and understanding of clients’ needs are unparalleled. I have known Marsia for many years working with her at IDOT and for her at KEG, and have always known this statement to be true: to Marsia, success is measured in satisfaction, not remuneration. I recommend Sequoia Engineering to anyone looking for excellent engineering and a positive, long-term business relationship.

    Tom Mannino, PTOE, P.E.
  • Marsia was the overall coordinator and lead environmental engineer for the design of Governors’ Parkway in Madison County, Illinois, a $25 million project. Her work was timely, within budget, and outstanding.

    Dave Dietzel, P. E.
  • I have known Marsia for over 10 years, serving her as her executive coach at SCI and organization consultant for Kaskaskia Engineering. I have learned as much from her as she has from me. While she has an expertise in civil and environmental engineering, she compliments this strength with the ability to connect people and organizations to meet client and all stakeholders’ objectives. Trust is her greatest asset. Employees adore her and trust her and are strive to meet her high expectations while reaching their ultimate potential. Clients know they will get desired results. She is an excellent partner who makes the people she works with better. I am blessed to know her. I am a better person because of my time with her and I am most proud to call her my friend

    Jonathan Jones
  • Marsia is an organized high achieving visionary leader. She is a go-to person for accomplishing complicated interrelated tasks on a tight schedule.

    Dr. Bruce Berdanier