Mastec Affiliate Awarded a Multi-Year Contract to Build PacifiCorp Transmission Line

PacifiCorp today announced it has awarded a multi-year engineer, procure and construct contract to build its Sigurd to Red Butte transmission line in south central Utah, a key section of PacifiCorp's Energy Gateway transmission investment to meet the current and projected needs of its electric customers. The contract has been awarded to EC Source, a MasTec, Inc.

affiliate. EC Source will provide engineering, procurement and construction services for this major transmission project. It is the second Energy Gateway segment EC Source has been awarded; the company is currently completing construction of PacifiCorp's 100-mile Mona to Oquirrh line also in Utah. Sigurd to Red Butte construction is scheduled to begin in 2013. When completed in 2015, it will deliver additional power to serve customers of PacifiCorp's retail operations, Rocky Mountain Power and Pacific Power. Together, these companies serve more than 1.7 million customers in six western states. "This segment, and our overall Energy Gateway transmission investment, is a fundamental part of PacifiCorp's plans to ensure long-term supply of reliable and affordable energy to meet the growing needs of our