READING, Pa. -

UGI announced plans Thursday to replace some of its aging natural gas lines under the streets of Reading.

The city-based utility will replace 2,860 feet of main in the 1400 and 1500 blocks of College Avenue; 5,000 feet in the 1700 through 2400 blocks of Fairview Street; and 2,500 feet in the 900 through 1300 blocks of Moss Street.

The work, scheduled for fiscal year 2013, is part of a $71.1 million company-wide effort to replace approximately 63 miles of cast iron and bare steel mains with mains constructed of contemporary materials such as high-density plastic or cathodically protected steel.

"Safety is always UGI’s first priority," said Robert F. Beard, president and CEO, UGI Utilities Inc. "These infrastructure projects continue our commitment to ensure our system provides safe, reliable service for our customers, and for the many communities we serve."

UGI said it expects to spend $1.2 billion over the next 30 years to replace all pipelines made of non-contemporary material. The replacement schedule, officials said, is guided by a plan that prioritizes projects based on risk assessment and other factors.