Pasadena’s Tetra Tech Inc. announced Thursday that is has been awarded a five-year, $23.6 million contract with the U.S. Navy. Tetra Tech will conduct field surveys and data analysis in order to predict the environmental consequences of an expansion of the training grounds at the Marine Corps Air Ground Combat Center in Twentynine Palms.

The engineering and technical services company will assess the density, health and habitat of federally-threatened species at the combat center. Then, it will collaborate with the Fish and Wildlife Service and other agencies to develop strategies to offset negative impacts that an expansion would have on natural resources. The company will also work with the agencies to monitor those resources.

Shares of Tetra Tech rose 28 cents on Thursday to close at $25.83.