Founded in 2006 by Noelle Sanders in Phoenix, Arizona, Del Sol Group (DSG) provides environmental consulting services to Federal, State, local agencies and private entities seeking compliance with applicable laws, regulations and local ordinances.
Our environmental projects involve the National Environmental Policy Act (NEPA), Endangered Species Act, Clean Water Act and National Historic Preservation Act.  DSG has prepared numerous Environmental Assessments (EAs) for federal, state, and local agencies as well as Categorical Exclusions (CE) for the Arizona Department of Transportation (ADOT) and other entities. 
We prepare environmental documentation including Environmental Impact Statements, Environmental Assessments and Categorical Exclusions.  Resources reviewed under NEPA typically include:

                  • Cultural Resources – archaeological/historic resources
                  • Natural Environment – biological, floodplains, Section 404
                  • Physical/Construction – utilities, hazardous materials, air quality, noise
                  • Agency Scoping/Public Involvement
                  • Socioeconomic Resources – Title VI/EJ populations, displacements, development
                  • Visual Resources

DSG provides Clean Water Act compliance including Section 401 and 404 permitting, habitat planning, mitigation and monitoring.  DSG also provides Endangered Species Act compliance including species surveys, habitat mapping and native plant surveys.
DSG coordinates extensively with archaeologists for National Historic Preservation Act compliance including Class III surveys, AZSITE/ASM site file research, site testing and data recovery.

DSG Leadership

Noelle Sanders

Principal and Environmental Director

Del Sol Group’s Principal and Environmental Director, Noelle Sanders, is a native of Arizona, and comes from a family with interesting stories in Arizona. Noelle’s Great Grandfather was the Police Chief of Glendale, her Grandmother was the first female Principal of Madison Schools, and her Father was a banker during the savings & loan era. After graduating from Mesa’s Dobson High School, Noelle followed in her father’s footsteps and graduated from U of A with a degree in Geosciences.

This unique perspective, along with her understanding of what it means to invest one’s own capital in a project, allows Noelle to consult her clients on the best available opportunities.

In 2006, Noelle’s passion and dedication to environmental consulting lead her to form Del Sol Group. As an outdoor enthusiast, Del Sol Group reflects Noelle’s commitment to the environment and to improving the quality of life in Arizona.


Kristyn Mosler, PE

Project Manager

Kristyn is a registered Professional Engineer and an almost-native Arizonan who grew up in Scottsdale and attended the University of Arizona in Tucson. She graduated in 1997 with a degree in Civil Engineering, and worked as a hydrologist and design engineer in Phoenix before joining Del Sol Group in 2011. Since joining DSG, she has expanded her knowledge of environmental compliance and federal regulations, and become a project manager for a variety of key projects involving NEPA compliance and Section 404 permitting.







dbe-advantage    dbe-certified   ndot     caltrans


DSG Careers

Del Sol Group is a growing multi-disciplinary company that is always interested in adding to its creative team. If you're eager to join a dynamic team of problem solvers, where collaboration is essential in what we do everyday, then you will discover a nice fit in the atmosphere at Del Sol Group.

We welcome challenges – they allow us to show off our creative solutions processes. That is why we are searching for individuals that are focused yet enjoy working creatively to devise unique solutions for our clients and to make a difference in the environments that surround us.

Del Sol Group continues to look for team members at all skill levels within the following disciplines: Biologists, Environmental Planners, and Regulatory Specialists.

If you think the exciting environment at Del Sol Group is just what you've been waiting for, please send your resume to

We look forward to hearing from you!