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EC Source Wins Second Contract to Build a PacifiCorp Transmission Line

The 169 mile Sigurd to Red Butte line will serve existing and future customers

SALT LAKE CITY, Nov. 21, 2012 /PRNewswire/ -- 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. (NYSE: MTZ) 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 existing and future customers," said Natalie Hocken, PacifiCorp senior vice president, transmission and system operations.

The Sigurd to Red Butte segment is approximately 169 miles in length consisting of a new single circuit 345-kilovolt transmission line from the Sigurd substation in Sevier County to the Red Butte substation in Washington County.     

"We're pleased to begin construction of this important addition to the transmission system we all depend on," said Richard Walje, Rocky Mountain Power president. "We look forward to completing it on time and within budget to provide the safe, reliable electric service that is essential to the economies of all the states we serve. We appreciate the efforts of federal agencies and county and city officials in working through the many extensive details of this project."

During construction, EC Source will have multiple project facilities along the transmission line route in Utah and will utilize the local Utah labor force. Engineering and procurement activities are expected to begin in December 2012 with construction starting in April 2013 and the line placed in service summer 2015. 

"We are proud of the successful Mona to Oquirrh transmission line project for PacifiCorp which is now nearing completion. On the new Sigurd to Red Butte segment, safety, environmental stewardship, technical excellence and providing industry leading labor and equipment resources again will be our primary objectives," said Jose Mas, MasTec's chief executive officer, MasTec (NYSE: MTZ). "The award of this second contract will allow us to maintain key personnel in the safe and cost effective growth of EC Source's transmission business."

About Energy Gateway
In May 2007, PacifiCorp launched Energy Gateway, a significant transmission expansion investment program that will add approximately 2,000 miles of new transmission lines across the West. Siting and permitting processes are underway for many segments of the planned expansion. One segment – the 135-mile Populus-Terminal line between Idaho and Utah – is completed and began serving customers in 2010. The Mona-Oquirrh segment is scheduled to go in service for customers in summer 2013. More information can be found at www.pacificorp.com/energygateway.

About PacifiCorp
PacifiCorp operates as Rocky Mountain Power in Utah, Wyoming and Idaho and as Pacific Power in Oregon, Washington and California. PacifiCorp is one of the lowest-cost electricity producers in the United States serving the energy needs of more than 1.7 million customers. The company works to meet growing energy demand while protecting and enhancing the environment. PacifiCorp has a net generation capacity of approximately 10,600 megawatts from coal, hydro, gas-fired combustion turbines and renewable wind and geothermal power and owns and operates 16,200 miles of transmission lines across the West.

About MasTec, Inc. and EC Source
MasTec, Inc. (NYSE: MTZ), including its EC Source subsidiary and others, is a nationally recognized full-service EPC program management company focused on deploying high voltage electrical systems throughout North America. MasTec is a recognized industry leader in project planning and execution of large-scale electric transmission projects, including full service environmental planning, engineering, procurement and construction. The Company has completed major transmission projects for investor-owned utilities nationwide and is currently working on multiple large-scale projects throughout North America.

SOURCE MasTec, Inc.

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