Founded in 1980, Gutierrez-Palmenberg, Inc. (GPI) is headquartered in Phoenix, AZ. Revenue is equally divided between government prime contracts and private, commercial contracts.

• Phase I ESA in Eloy, AZ
• Phase I ESA in Goodyear, AZ
• Phase I ESA in Peoria, AZ
• Phase I ESA in Queen Creek, AZ
• Phase I ESA Reporting in Buckeye, AZ
• Phase I ESA Reports in Glendale, AZ