Allwyn Consultants is an Arizona-based environmental, geotechnical, and materials testing firm based in Tempe, Arizona. Our staff is made up of a committed team creating customized solutions to our numerous clients in both the private and public sector. Our guiding principles of quality, responsiveness, service, and fair price are kept in mind with every undertaking to ensure Allwyn provides a result that exceeds our client’s expectations.


  • Geotechnical Investigations

  • Construction Observation and Materials Testing

  • Brownfields Grant Writing and Program Implementation

  • Phase I & II Environmental Site Assessment

  • Regulatory Compliance

  • Environmental Remediation

Completed Projects

Our work speaks for itself!

Allwyn Consultants | Geotechnical & Environmental Engineering
Allwyn Consultants | Geotechnical & Environmental Engineering

From our blog

October 5, 2016 in News

Allwyn Welcomes Frank Guerra

We are happy to announce Frank Guerra has joined Allwyn’s rapidly expanding materials testing team. Mr. Guerra graduated from ASU in 1983 with his bachelor of Civil Engineering, and has…

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September 26, 2016 in News

Allwyn Wins City of Pima On-Call Environmental Consulting Contract

Allwyn Wins City of Pima On-Call Environmental Consulting Contract Allwyn Consultants recently won a contract with Pima County to provide community outreach and environmental professional services for Pima’s Brownfields Program.... Read More

"The Quality of your work was exceptional. you showed great professionalism throughout the project. Your willingness to process and respond to client and project needs were truly appreciated and definitely helped ensure the success of this project. I would highly recommend your services."

Remy SawyerEnvironmental Scientist, Tuscan Water

"The challenge of navigating Brownfields redevelopment as a small municipality was overwhelming. Allwyn Environmental helped us get funding and provided technical expertise that allowed us to revitalize our highest priority community site."

Joel GastelumPlanning and Zoning, City of South Tucson

"Allwyn Environmental is on of Eastmark's most valuable partners and we count on their responsiveness and technical capabilities."

Dea MacdonaldSenior Vice President, DMB