Inergy Midstream, L.P., formerly Inergy Midstream, LLC, is a limited partnership formed by Inergy, L.P. (NRGY) to own, operate, develop and acquire midstream energy assets. As of September 30, 2011, its assets base consisted of natural gas and natural gas liquids (NGLs) storage and transportation assets located in the Northeast region of the United States. NRGM GP, LLC is the general partner of Inergy Midstream, L.P. The Company owns and operates four natural gas storage facilities located in New York and Pennsylvania that have an aggregate working gas storage capacity of 41.0 billion cubic feet with high peak injection and withdrawal capabilities. It also owned natural gas pipelines located in New York and Pennsylvania with 355 million cubic feet per day of interstate and intrastate transportation capacity as of September 30, 2011. In December 2012, the Company completed the acquisition of Rangeland Energy, LLC.