PRIMU Primoris Services - Units (MM)

Primoris Services Corporation (Nasdaq:PRIM) (Nasdaq:PRIMW) ("Primoris" or "Company") today announced that management will address institutional investors at the following conferences during September 2010:

• Wedbush Securities 2nd Annual Clean Technology & Industrial Growth Conference -- John P. Schauerman, EVP of Corporate Development, will present on Wednesday, September 15th at 10:00 am PT/1:00 pm ET. The event is being held at The Fairmont Hotel in San Francisco, CA.   
• D.A. Davidson's 9th Annual Engineering & Construction Conference -- Peter J. Moerbeek, EVP and Chief Financial Officer, will present on Tuesday, September 28th at 3:15 pm PT / 6:15 pm ET. The event is being held at The Omni San Francisco Hotel. 

These presentations will also be broadcast live and archived at the "Investor Relations" section of Primoris's website at www.prim.com.

About Primoris

Primoris, through various subsidiaries, is one of the largest specialty contractors and infrastructure companies in the United States. Serving diverse end markets, 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. With the recent acquisition of James Construction Group, Primoris has a significant presence in the Gulf States region where it provides heavy civil construction services. 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.prim.com.

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

CONTACT:   Primoris Services Corporation
           Peter J. Moerbeek, Executive Vice President, 
            Chief Financial Officer
           (949) 454-7121
           pmoerbeek@prim.com

           The Equity Group Inc.
           Devin Sullivan, Senior Vice President
           (212) 836-9608
           dsullivan@equityny.com