D2 consultants, LLC, founded by Daria Drago, PE, PMP, is a small, woman-owned water resources, environmental, engineering, and management services firm located in the Denver, Colorado metro area. Our staff of highly qualified professionals have extensive experience completing highly complex projects for federal, state and local governments; oil and gas clients; power generation utilities; industrial and manufacturing; golf courses; developers; municipalities; and transportation clients.

Our staff have a long-standing and continuing reputation for delivering quality projects including but not limited to environmental evaluations, NEPA, regulatory compliance and permitting, water resources, water rights, feasibility studies, groundwater, surface water, GIS, web based data distribution, and engineering.