Sustainable Development

Our economy is dependent on a healthy environment. In the Cascadia Bioregion, we’re blessed with nature’s beauty and bounty. Comprehensive systems-thinking approaches to development will conserve resources and reduce wastes. We consider the life-cycle project costs as well as benefits that can be achieved by renovating existing structures or building new infrastructure.

Our civil engineers are experienced with low-impact site development and eco-friendly drainage systems. Ridolfi can help you to assess the feasibility of renewable energy, develop a zero waste program, design green infrastructure, or help you reduce your carbon footprint. Let’s work together to make the “Salmon Nation” more healthy.


Jilkaat Kwaan Cultural Heritage Center and Bald Eagle Observatory

Chilkat Indian Village
Klukwan, AK

Sustainable Site Development Code

Upper Skagit Indian Tribe
Sedro Woolley, WA

Strategic Energy Plan for the Yakutat Tlingit Tribe

Yakutat, AK

Solid Waste Transfer Station Planning and Design

Neah Bay, WA