Primoris Services Corporation Announces $30 Million Design and Supply Contract for Waste Heat Recovery Units

Primoris Services Corporation (Nasdaq:PRIM) (Nasdaq:PRIMU) (Nasdaq:PRIMW) ("Primoris" or "Company"), one of the largest specialty contractors and engineering companies in the United States, today announced that its wholly-owned subsidiary, OnQuest, has signed a contract to design and supply six waste heat recovery units (WHRU) for a $43 billion liquefied natural gas (LNG) project in Australia (the "Project"). The WHRUs provided by OnQuest will recover energy from the exhaust of the Project's gas turbines to reduce waste heat and achieve higher thermal efficiencies. Work on the Project is beginning this month and is expected to be completed in December 2011 with expected revenues of approximately $30 million to Primoris. 

The Project will extract gas from 30 interconnected wells drilled into the sea floor at the Greater Gorgon gas fields, Australia's largest natural gas resource. The LNG facility, currently under construction, is expected to produce a total of 15 million tons of LNG per year.   

OnQuest, a part of Primoris's Engineering segment, is an industry leader in the engineering and design of process and furnace technologies for the oil-refining and petrochemical industries. OnQuest designs, supplies, and constructs LNG, hydrogen, ammonia, and syngas plants, and assists clients with procurement and project management, as well as refurbishment, revamping, and spare parts. OnQuest's construction-focused designs promote efficiency in project execution, resulting in shorter field schedules, minimum man-hours, and controlled costs. Its staff consists of world-class licensed engineers, designers, and process experts with decades of experience in complex design and installation projects for the refining and petrochemical industries.

About Primoris

Primoris, through various subsidiaries, is one of the largest specialty contractors and engineering companies in the United States, primarily serving the growing power and energy sectors. Primoris provides a wide range of construction, fabrication, maintenance and replacement services, as well as engineering services to major public utilities, petrochemical companies, energy companies, municipalities and other customers. Primoris is also a leading water and wastewater contractor in the state of Florida, and a specialist in designing and constructing complex commercial and industrial concrete structures in California. For additional information on Primoris, please visit www.primoriscorp.com.

The Primoris Services Corporation logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5527

Forward-Looking Statements

This press release contains certain forward-looking statements, including with regard to the Company's future performance. Words such as "estimated," "believes," "expects," "projects," and "future" or similar expressions are intended to identify forward-looking statements. Forward-looking statements inherently involve risks and uncertainties, including without limitation, those described in this press release and those detailed in the "Risk Factors" section and other portions of our Annual Report on Form 10-K for the year ended December 31, 2008 and other filings with the Securities and Exchange Commission, including the Company's Form 10-Q filed on November 12, 2009. Primoris does not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.

CONTACT:  Primoris Services Corporation

          Peter J. Moerbeek, Executive Vice President, Chief 
           Financial Officer
          [phone]
          [e-mail]
          The Equity Group Inc.
          Devin Sullivan, Senior Vice President
            [phone]
            [e-mail]
          Gerrard Lobo, Senior Account Executive
            [phone]
            [e-mail]