Transcontinental Gas Pipe Line (Transco) filed an application at FERC Tuesday to build a pipe and compression expansion of its system in Pennsylvania and New Jersey to serve natural gas markets in the Northeast.

The Sentinel expansion would increase Transco firm transportation capacity by 142,000 Dth/d, said Transco, a subsidiary of Williams. Phase 1 of the project would provide 40,000 Dth/d by a target date of Nov. 1, 2008, while Phase II would provide 102,000 Dth/d of additional capacity by Nov. 1, 2009, the company noted.

The proposed expansion would increase total system capacity on the 10,500-mile Transco pipeline to about 8.3 Bcf/d. Transco said the expansion is designed to meet the needs of various customers in the Northeast region, particularly utility companies and electric generators.

The project calls for the addition or replacement of approximately 18 miles of pipe at various locations in Pennsylvania and New Jersey, as well as compressor facility modifications at Station 195 in Delta, PA. Transco said it plans to build four new sections of pipe (loops) and replace an existing segment of pipeline.

The pipeline expects to begin construction of the Phase I facilities in the summer of 2008, and of the Phase II facilities in spring 2009.

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