Elizabethtown Gas, a unit of AGL Resources, is seeking approval from the New Jersey Board of Public Utilities to spend more than $1.1 billion over a 10-year period to replace 630 miles of aging pipeline. The proposed Safety, Modernization and Reliability Tariff aims to remove all aging cast iron and steel pipelines by 2027. The program includes eliminating 630 miles of vintage cast iron, steel and copper service lines, and 240 regulator stations associated with the low-pressure distribution system. Excess flow valves would be installed on all new service lines, and natural gas meters would be moved to the outside of homes and businesses. Since 2004, Elizabethtown Gas has spent $550 million to replace more than 200 miles of aging infrastructure, mostly cast iron and bare steel pipeline. The utility serves about 281,000 residential, business and industrial gas customers in New Jersey. New Jersey regulators recently approved a scaled-back pipe replacement program for Public Service Electric and Gas Co. (see Daily GPI, Sept. 16).