Geomatrix is a diversified technical consulting and engineering firm headquartered in Oakland, California. The company employs some 500 engineers, scientists and other professionals in 18 offices across the United States and one office in Canada. Geomatrix offers specialist environmental, geotechnical and water resources services to clients in sectors such as oil and gas, industrial, mining and municipal.

The purchase is consistent with AMEC's strategy of geographic and capacity expansion in the Earth and Environmental business and follows the acquisition of six smaller environmental consultancy businesses since January 2007.

Samir Brikho, AMEC Chief Executive said: "With services from environmental impact assessments to remediation, Earth and Environmental is an important differentiator in AMEC's portfolio of services. Geomatrix will significantly enhance our geographic coverage and our ability to provide customers with high value consultancy services."