Carty Lateral

Boardman Conservation Area

Boardman Conservation Area

Columbia River

Morrow County

Lindsay Prairie

Ione Compressor Station

Gas Transmission Northwest (G

TN)

Carty Generating Station

N

TransCanada’s Gas Transmission Northwest LLC

(GTN) has received approval from the Federal Energy

Regulatory Commission (FERC) to construct, operate

and maintain the Carty Lateral, a natural gas pipeline

near Boardman, Oregon.

Prior to the approval by FERC, the project underwent

an extensive environmental review and public input

process for about two years. This included two public

open houses and extensive and continuous updates

with local elected officials, community leaders and

other stakeholders.

The Carty Lateral will extend north from GTN’s existing

Compressor Station 9 near Ione, Oregon, and terminate

at a connection with the Carty Generating Station

that will be owned and operated by Portland General

Electric Company (PGE).

The new natural gas pipeline will consist of

approximately 24.3 miles of 20-inch steel diameter

pipe, along with associated measurement and support

facilities. The lateral will be capable of transporting about

175,000 dekatherms a day of natural gas to the new

PGE plant. The Carty Generating Station’s proximity to

the existing GTN mainline means that a steady supply

of natural gas from the U.S. and Canada can reach the

facility with minimal disturbance to the environment.

Carty Lateral Pipeline

About GTN

GTN operates approximately 1,351 miles of interstate pipeline and 12 compressor stations that extend from the International Boundary at Kingsgate, British Columbia to the Oregon-California border.

The GTN system interconnects with TransCanada’s B.C. system at Kingsgate, British Columbia; with Williams (Northwest Pipeline Corporation) at Spokane and Palouse, Wash., and at Stanfield, Ore.; and with Pacific Gas & Electric Company and Tuscarora Gas Transmission Company at Malin, Ore. Multiple taps also connect the GTN System to Avista Corporation and Cascade Natural Gas distributors.

Western Canada is the primary source for the natural gas, but the GTN system also receives U.S. domestic gas supplies at Stanfield, Ore.

The GTN system can transport more than 2.7 billion cubic feet of gas a day (Bcf/d). More than 2.1 Bcf/d can be delivered to California, and up to 1 Bcf/d to the Pacific Northwest (though typical deliveries there are 600-700 million cubic feet a day).

About TransCanada

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: www.transcanada.com or check us out on Twitter @TransCanada or http://blog.transcanada.com.

Construction

The route selected for the Carty Lateral is designed to have the least impact to the environment, while meeting the needs of our customer PGE, and its Carty Generating Station.

GTN will use best practices to ensure the pipeline is safely built to meet or exceed industry and government standards that are designed to ensure public safety and efficient, reliable operations.

Land disturbed during the construction process will be restored to pre-construction conditions, to the extent possible.

Schedule• April 2011 through June 2012: GTN conducts Pre-Filing Process with the FERC, including

public and agency consultation, land surveys, environmental studies

• July 31, 2012: GTN files certificate application with the FERC

• March 14, 2013: FERC certificate received

• Spring, Summer and Fall 2015: Construction activities (anticipated)

• Fall 2015: Pipeline placed in service (anticipated)

Safety and Integrity

The safety of the public and GTN’s employees is a TransCanada value and we are proud of our excellent safety record.

Once the Carty Lateral is in service, the pipeline will be continuously monitored through our Gas Control Center, and through maintenance practices that include aerial patrols, ground surveys, internal pipeline inspections using specialized tools, and cathodic protection against external corrosion.

GTN also will maintain an ongoing public awareness program to keep the lines of communication open with our Carty Lateral neighbors about our operations, and how to live and work safely around underground utilities.

As part of this program, GTN will involve local emergency response agencies to ensure an understanding of the pipeline, which will lead to a safe and effective response in the unlikely event of an incident.

Carty Lateral

Carty Lateral – October 2013

Contact Us

Find us online: www.gastransmissionnw.com (click on “Proposed Carty Lateral” in the left hand column)

Call us: 1.855.21CARTY (855.212.2789) Email us: CartyLateral@TransCanada.com