PRIMU Primoris Services - Units (MM)

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 Peter J. Moerbeek, EVP and Chief Financial Officer, is scheduled to present at the Roth Capital Partners 22nd Annual OC Growth Stock Conference on Monday, March 15, 2010 at 8:30 am Pacific Time / 11:30 am Eastern Time. The event is taking place at the Ritz-Carlton Laguna Niguel in California.

The presentation will also be broadcast live and replayed via the "Investor Relations" section of Primoris's website at www.primoriscorp.com. 

About Primoris

Primoris, through various subsidiaries, is one of the largest specialty contractors and engineering companies in the United States. 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 addition of the 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.primoriscorp.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@primoriscorp.com

The Equity Group Inc.

Devin Sullivan, Senior Vice President

(212) 836-9608

dsullivan@equityny.com

Gerrard Lobo, Senior Account Executive

(212) 836-9610

globo@equityny.com