Tetra Tech, Inc. said Friday that it has acquired Golden, Colo.-based Vector Colorado LLC. Terms of the deal were not disclosed.

The Pasadena-based engineering firm said it hopes to improve the company's presence in the resource management business as it looks to expand its business in the mineral mining industry. The acquisition is expected to close by the end of this month. Vector had $7 million in revenues in 2005.

Separately, Tetra Tech also said it was awarded a $17 million award to support the Environmental Protection Agency's Resource Conservation and Recovery Act. This contract is Tetra Tech's fourth consecutive RCRA contract, and represents the 22nd year working with the federal agency.

Tetra Tech will continue to provide engineering and applied science to the RCRA's solid and hazardous waste programs in 22 states across the west.

Shares in Tetra Tech were down 18 cents to $17.64 in midday trading.

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