About Orion Marine GroupOrion Marine Group, Inc. provides a broad range of marine construction and specialty services on, over and under the water along the Gulf Coast, the Atlantic Seaboard, the West Coast, Alaska and Canada as well as the Caribbean Basin, the Middle East and Australia and acts as a single source turn-key solution for its customers' marine contracting needs. Its heavy civil marine construction services include marine transportation facility construction, marine pipeline construction, marine environmental structures, dredging, and specialty services. Its specialty services include salvage, demolition, diving, surveying, towing and underwater inspection, excavation and repair. The Company is headquartered in Houston, Texas and has an almost 100-year legacy of successful operations. The Orion Marine Group, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4539 EBITDA and EBITDA Margin This press release includes the financial measures "EBITDA" and "EBITDA margin". These measurements may be deemed "non-GAAP financial measures" under rules of the Securities and Exchange Commission, including Regulation G. The non-GAAP financial information may be determined or calculated differently by other companies. By reporting such non-GAAP financial information, the Company does not intend to give such information greater prominence than comparable and other GAAP financial information, which information is of equal or greater importance. Orion Marine Group defines EBITDA as net income before net interest expense, income taxes, depreciation and amortization. EBITDA margin is calculated by dividing EBITDA for the period by contract revenues for the period. The GAAP financial measure that is most directly comparable to EBITDA margin is operating margin, which represents operating income divided by contract revenues. EBITDA and EBITDA margin are used internally to evaluate current operating expense, operating efficiency, and operating profitability on a variable cost basis, by excluding the depreciation and amortization expenses, primarily related to capital expenditures and acquisitions, and net interest and tax expenses. Additionally, EBITDA and EBITDA margin provide useful information regarding the Company's ability to meet future debt repayment requirements and working capital requirements while providing an overall evaluation of the Company's financial condition. In addition, EBITDA is used internally for incentive compensation purposes. The Company includes EBITDA and EBITDA margin to provide transparency to investors as they are commonly used by investors and others in assessing performance. EBITDA and EBITDA margin have certain limitations as analytical tools and should not be used as a substitute for operating margin, net income, cash flows, or other data prepared in accordance with generally accepted accounting principles in the United States, or as a measure of the Company's profitability or liquidity.