The Marcellus Union Pipeline will provide Marcellus gas producers a solution for clearing the associated NGL production to the closest petrochemical and refining complex, namely the Sarnia – Lambton complex in Ontario, Canada.

Historically the Sarnia market has been supplied by NGL production from the Western Canadian Sedimentary Basin (WCSB) in Alberta, Canada. With the recent declines in Alberta conventional gas production, less associated NGLs are available for export. As a result of continued local consumption in Alberta, less NGLs are available for the Sarnia market.

Transportation of Marcellus NGLs to the Sarnia market via the proposed Marcellus Union Pipeline will create a new source of supply for a market short of feedstocks. The Marcellus Union Pipeline will allow producers and midstream companies with gas processing capacity to sell directly to the end use market.

The Marcellus Union Pipeline project will consist of either a 12-inch or 16-inch pipeline to the Detroit area of Michigan. It will then continue north with a 12-inch pipeline through Michigan to Marysville and ultimately Sarnia, or continue toward Windsor, Ontario and will use existing pipeline to Sarnia.

A non–binding open season was issued March 4, 2010 to ascertain interest in the pipeline. Buckeye Partners is currently discussing options for alternate delivery points and will continue with these negotiations. In the event solicitation of volume interest warrants additional delivery locations, those delivery points will be specified in the binding open season in May 2010.

Buckeye Partners anticipates the pipeline construction will take approximately 2.5 years to complete.

Buckeye Partners does not currently own any production in the Marcellus Shale nor does it market NGLs.