Great Lakes Dredge & Dock Corporation (NASDAQ:GLDD) announced Bill Steckel, Senior Vice President and Chief Financial Officer and Katie Hayes, Treasurer and Director of Investor Relations, will be presenting at the D.A. Davidson 11 th Annual E&C Conference in San Francisco on Tuesday, September 11, 2012. The presentation is scheduled to begin at 2:30 p.m. (P.D.T.)/5:30 p.m. (E.D.T). A live webcast of this presentation will be available on the Investor Relations section of the Company's website at www.gldd.com. The webcast and accompanying slide presentation will be archived on the website within 24 hours and will be available for at least two weeks. The Company Great Lakes Dredge & Dock Corporation is the largest provider of dredging services in the United States and the only U.S. dredging company with significant international operations. The Company is also one of the largest U.S. providers of commercial and industrial demolition services primarily in the Northeast. The Company owns a 50% interest in a marine sand mining operation in New Jersey that supplies sand and aggregate for road and building construction and a 50% interest in an environmental service operation with the ability to remediate soil and dredged sediment treatment. Great Lakes employs over 150 degreed engineers, most specializing in civil and mechanical engineering, which contributes to its 122-year history of never failing to complete a marine project. Great Lakes has a disciplined training program for engineers that ensures experienced-based performance as they advance through Company operations. Great Lakes also owns and operates the largest and most diverse fleet in the U.S. industry, comprised of over 200 specialized vessels.