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Yankee Gas Services Company
P.O. Box 270
Hartford, CT 06141-0270
(800) 989-0900

News Release
Office:(860) 665-3931
BERLIN, Conn., June 16, 2006—Yankee Gas Services Company will temporarily use liquefied natural gas (LNG) to serve its customers in New London, Waterford and East Lyme during a scheduled shutdown of the Algonquin interstate pipeline that delivers natural gas to Yankee’s gate station in Waterford. The temporary interstate pipeline shutdown is expected to occur from Monday, June 19 through Friday, June 23 to allow Algonquin, a wholly owned company of Duke Energy Gas Transmission, to conduct regularly scheduled maintenance on its system.

Yankee Gas has arranged to temporarily use LNG in its distribution system to ensure its customers receive continuous and reliable service throughout the duration of Algonquin’s shutdown. The LNG will be injected into Yankee’s distribution system through the use of a temporary LNG facility will be staffed 24 hours a day, seven days a week for the duration of the shutdown. Local public officials also have been notified of the shutdown.

LNG is natural gas that is cooled to a temperature of -260 degrees Fahrenheit. LNG, like natural gas, is colorless, odorless, non-corrosive and non-toxic. It will be put through vaporizers to return it to its gaseous state before it is injected into Yankee’s distribution system. Because of the great temperature difference between LNG and hot summer weather, it is possible a water vapor cloud could form. This is a normal part of the process and does not pose any safety hazard. It will look something like the cloud that forms when dry ice is exposed to the air. After the vaporization process, an odorant will be added. The odorant gives natural gas its “rotten eggs” smell, making a leak easy to detect.

Normal operations are expected to resume by Saturday, June 24. Customers should not notice any difference in their service during this time. Customers should direct their questions to Yankee’s Customer Service Center, weekdays, during normal business hours, at 1-800-989-0900.

Yankee Gas Services Company (Yankee Gas) is Connecticut’s largest natural gas distribution company, delivering safe, reliable natural gas service to approximately 196,000 customers in 71 cities and towns. Yankee Gas is expanding Connecticut’s energy options and increasing customer choice by extending the availability of clean, efficient natural gas throughout the state. Yankee Gas is part of the Northeast Utilities System (NYSE: NU). For more information, please visit www.yankeegas.com.

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