Prestigious, Non-Partisan Scientific Organization Finds Diluted Bitumen No Riskier Than Other Crude Oils

Prestigious, Non-Partisan Scientific Organization Finds Diluted Bitumen No 
Riskier Than Other Crude Oils 
CALGARY, ALBERTA -- (Marketwired) -- 06/27/13 -- TransCanada
Corporation (TSX:TRP) (NYSE:TRP) (TransCanada) welcomed a scientific
report published by the National Academy of Science regarding
pipeline safety and the characteristics of oil sands derived crudes
(diluted bitumen). Formed in 1916, the Academy describes itself as
'having earned a solid reputation as the nation's premier source of
independent, expert advice on scientific issues'.  
The report was commissioned by the Pipeline and Hazardous Materials
Safety Administration (PHMSA) of the U.S. Department of
Transportation. The study concluded diluted bitumen (dilbit) does not
have unique properties that make it more likely than other crude oils
to cause internal damage to pipelines from corrosion nor is dilbit
more likely to cause spills when compared to other crude oils. 
"The public has been bombarded with misinformation about the oil that
will go through Keystone XL, but this latest study by the highly
credible National Academy of Science has confirmed that oil is oil
and the pipelines we build will safely move different blends - as the
industry has been doing for decades," said Vern Meier,
vice-president, pipeline safety and compliance, TransCanada. 
The National Academy of Science report is the latest in a series of
reports investigating the characteristics of oil sands derived crudes
and pipeline safety. Studies completed by Batelle Memorial, Penspen
Integrity, the University of Calgary, Natural Resources Canada, the
Nature Journal and PHMSA have also concluded that diluted bitumen
behaves the same way as other crude oil in pipelines and is just as
safe to transport as other conventional forms of oil. 
Key findings by the National Academy of Science panel include:  

--  No evidence of causes of pipeline failure unique to the transportation
    of diluted bitumen 
--  No evidence of chemical or physical properties of diluted bitumen that
    are outside the range of other crude oils 
--  No evidence that any aspects of the transportation of diluted bitumen by
    transmission pipeline would cause releases more likely than the
    transportation of other crude oils  
--  The dilution process needed to help these heavy oils flow yield a stable
    and fully mixed product for shipping by pipeline with density and
    viscosity levels in the range of other crude oils transported by
    pipeline in the United States  
--  No evidence of unique or extreme properties that make diluted bitumen
    shipments more likely to cause internal corrosion or erosion

As the Energy Information Administration and the International Energy
Agency experts have shown, U.S. refineries will continue to import
3.5 to 7.5 million barrels of oil each day through 2035. A safe,
secure and reliable supply of oil is needed to heat American homes,
power industry and start more than 250 million vehicles every
morning. TransCanada's job is to build and operate infrastructure
that will continue to get that oil to our customers safely and
"The public needs to have confidence in what our industry does and
the steps that companies like TransCanada take to make sure that the
products we transport are handled carefully and safely, and this
latest study shows that we are," concluded Meier. "We make
significant investments to make sure our energy infrastructure
network is operating as safely as possible. In 2012 alone,
TransCanada invested more than $1 billion in pipeline integrity and
proactive inspection and maintenance programs to protect our
pipelines and energy facilities and we plan to spend an additional
$1.2 billion this year." 
With more than 60 years' experience, TransCanada is a leader in the
responsible development and reliable operation of North American
energy infrastructure including natural gas and oil pipelines, power
generation and gas storage facilities. TransCanada operates a network
of natural gas pipelines that extends more than 68,500 kilometres
(42,500 miles), tapping into virtually all major gas supply basins in
North America. TransCanada is one of the continent's largest
providers of gas storage and related services with more than 400
billion cubic feet of storage capacity. A growing independent power
producer, TransCanada owns or has interests in over 11,800 megawatts
of power generation in Canada and the United States. TransCanada is
developing one of North America's largest oil delivery systems.
TransCanada's common shares trade on the Toronto and New York stock
exchanges under the symbol TRP. For more information visit: or check us out on Twitter @TransCanada or  
Forward Looking Information  
This publication contains certain information that is forward-looking
and is subject to important risks and uncertainties (such statements
are usually accompanied by words such as "anticipate", "expect",
"would", "will" or other similar words). Forward-looking statements
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its subsidiaries, including management's assessment of TransCanada's
and its subsidiaries' future financial and operation plans and
outlook. All forward-looking statements reflect TransCanada's beliefs
and assumptions based on information available at the time the
statements were made. Readers are cautioned not to place undue
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no obligation to update or revise any forward-looking information
except as required by law. For additional information on the
assumptions made, and the risks and uncertainties which could cause
actual results to differ from the anticipated results, refer to
TransCanada's Quarterly Report to Shareholders dated April 25, 2013
and 2012 Annual Report filed under TransCanada's profile on SEDAR at and with the U.S. Securities and Exchange Commission at and available on TransCanada's website at 
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