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Ridolfi Environmental, engineers with deep commitment to environment and peoples


Callie Ridolfi, President

Established in 1990, Ridolfi is an award-winning, small, woman-owned business that specializes in environmental engineering and scientific consulting. Ridolfi’s engineering team thrives on assisting clients in improving environmental quality, conserving resources and enhancing resilience using sustainable principals.

The staff of environmental engineers, scientists, chemists and regulatory compliance specialists have managed and provided technical support for public, private and tribal clients on civil, environmental and natural resource restoration projects throughout the Northwest and Alaska. Ridolfi has earned a reputation for developing close working relationships with clients and responding quickly to their needs. Ridolfi’s professional qualifications reflect continuous learning and professional experience that have honed staff to a high level of performance, expertise and reliability.

As a company and as individuals, Ridolfi is committed to the triple bottom line approach of people, planet and profit. Sustainability is an integral and fundamental element of the company’s mission.

Callie Ridolfi, founder and President of the company, has worked with tribal governments and leaders since the very beginning of her career. Projects have included habitat restoration, clean up and restoration from mining on native lands, assessing impacts of Hanford Nuclear Reservation on local tribes and the food chain. She has a deep respect for Native peoples, their cultural traditions, and indigenous wisdom. Through teaching, education, and hiring, RIDOLFI helps to build capacity within tribes so benefits are sustained for the long term.

Callie is a LEED-accredited professional and completed the MBA in Sustainable Business program at Bainbridge Graduate Institute. She is currently Board President of Island Vision (Mercer Island) and was the founding director of the Mercer Island Farmers Market. She also was a founding board member of the Washington Clean Technology Alliance and served on the NBIS board as  well.

Ridolfi’s website reports the company’s sustainability programs and progress: “Ridolfi tracks and reports our carbon footprint for transportation, energy, materials and waste generation. We’ve taken actions to put our principles into practice—from driving a hybrid company car, reducing our office lighting by 25%, purchasing green products and recycling or composting virtually all of our waste stream. We are a carbon-neutral organization, and we offset any greenhouse gas emissions produced with donations to Native Energy. We work to enhance the sustainability of our communities, from volunteering to manage wastes at public events to donating our profits to like-minded causes. We are experts in helping like-minded organizations that want to be cleaner and greener.”

Bruno Ridolfi

Bruno Ridolfi

Bruno Ridolfi, Principal Engineer, Mining and Waste Management, participates in the NBIS By-Product Synergy program as a technical advisor on waste to resources opportunities, and the Refractory Brick and Foundry Sand roundtable.

Ridolfi’s Core Services include:

Ridolfi case