Local support with global perspective is a key aspect of our teams.
Our partnership in Inogen Environmental Alliance provides us the diversity, strength, and global capacity of over 4,800 consultants in 165 offices on 6 continents.

Delta is a founding member of the Inogen Environmental Alliance. Through Inogen, a single point of contact directs your work seamlessly for global program implementation and local project completion.
Your contract with one local Inogen Associate delivers:
- Access to all alliance resources
- Comprehensive liability and insurance coverage
- Competitive, cost-effective service around the globe
Established Global Practice Standards set uniform methodologies for consistent execution for our most common service offerings.
Inogen’s robust e-platform for project execution, content delivery and business management, along with established Global Practice Standards, assures consistent execution around the world.