MACTEC WINS $1.2 MILLION GSA CONTRACT

ALPHARETTA, GA, March 24, 2008 -- MACTEC Engineering & Consulting (MACTEC E&C) has been awarded a $1.2 million contract with the U.S. General Services Administration (GSA). Bruce C. Coles, president of MACTEC E&C and chairman & CEO of MACTEC, Inc., the holding company (www.mactec.com) - made the announcement. The company's Golden, CO office is supervising the contract.

According to MACTEC Chief Scientist/Senior Principal Chemist Kevin E. Garrett, MACTEC is conducting two Resource Conservation and Recovery Act (RCRA) Facility Investigations (RFIs) for the GSA at the Denver Federal Center (DFC). MACTEC is also conducting a survey of asbestos in soil for two parcels at the DFC.

The purpose of the RFI activities is to study potential impacts to soil and groundwater from historic operations at the DFC. The majority of the buildings at the DFC were constructed in the 1940s during the operation of the Denver Ordnance Plant (DOP). The DOP manufactured .30-caliber cartridges and other munitions for the U.S. military.

The exterior RFI activities included installing 80 borings and monitoring wells, and excavating eleven trenches, a video survey of sanitary/storm water sewer lines. The interior RFI included installation of 68 borings and monitoring wells inside of the buildings.

"The wells and borings were completed in conjunction with the facilities ongoing operations," said Garrett. "The work included extensive coordination with the client and building tenants to ensure that the RFI activities did not impact their activities. In addition, MACTEC was requested to install a boring at the bottom of an elevator shaft that required extensive coordination with the building manager."

MACTEC, based in Alpharetta, GA, is an environmental, engineering, construction management, and infrastructure services firm with more than $450 million in annual revenue and 3,000 employees in over 80 offices nationwide. Colorado offices are located in Golden and Grand Junction.

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