Granite Construction Incorporated (NYSE:GVA) is proud to announce that it its management system has been certified under standards developed by the International Organization for Standardization (ISO) and the Occupational Health and Safety Assessment Series (OHSAS). Granite has earned the following certifications:

ISO 9001:2008 – Granite Construction Incorporated certified for its Quality Management System

ISO 14001:2004 – Granite Construction Incorporated and Granite’s Utah Region certified for their Environmental Management Systems

OHSAS 18001:2007 – Granite Construction Incorporated and Granite’s Utah Region certified for their Occupational Health and Safety Management Systems

“These certifications are a significant accomplishment for our company and the result of tremendous teamwork by our employees,” said Granite President and Chief Executive Officer James H. Roberts. “Continuous Improvement is a key focus throughout our company and this milestone reflects that ongoing effort as well as our commitment to safety, environment, quality and excellence in everything we do at Granite.”

Granite has voluntarily registered to the ISO and OHSAS standards to provide independent assessment of its management systems.

Background

ISO 9001:2008 quality management standard was developed and published by the International Organization for Standardization (ISO) and establishes an effective quality management program for companies. Important components of ISO 9001:2008 include customer satisfaction and establishing processes for continuous improvement.

ISO 14001:2004 is a standard for an Environmental Management System which requires an organization to determine its impact on the environment and relevant regulations to the operations of the business, create a plan to control processes to minimize the environmental impact, monitor the effectiveness of the system at meeting objectives as well as legal and other, and continually analyze the results and improve systems.

OHSAS 18001:2007 is an international standard that is developed by the Occupational Health and Safety Assessment Series (OHSAS) Project Group, an association that includes government agencies, certification bodies, national standards, industry associations, and consultants. The aim of OHSAS 18001:2007 is to assist organizations in managing and controlling their health and safety risks and continually improving their OH&S performance.

About Granite

Through its offices and subsidiaries nationwide, Granite Construction Incorporated (NYSE: GVA) is one of the nation’s largest infrastructure contractors and construction materials producers. Recognized as one of the top 25 largest construction companies in the U.S., Granite specializes in complex infrastructure projects, including transportation, industrial and federal contracting, and is a proven leader in alternative procurement project delivery. Granite is an award-winning firm in Safety, Quality and Environmental Stewardship, and has been honored as one of the World’s Most Ethical Companies by Ethisphere Institute for six years in a row. For more information, visit www.graniteconstruction.com.