Crestwood Midstream Partners LP, formerly known as Inergy Midstream, L.P., is a Delaware limited partnership formed in November 2011. The Company develops, acquires, owns and operates fee-based assets and operations within the energy midstream sector. The Company owns and operates a diversified portfolio of crude oil and natural gas gathering, processing, storage and transportation assets that connect energy supply with energy demand across North America. The Company has three reporting segments: Gathering and Processing, NGL and crude services, and Storage and Transportation. The Gathering and Processing operations engage in the gathering, processing, treating, compression, transportation and sales of natural gas and the delivery of NGLs. In Gathering and Processing, the Company provides natural gas gathering, processing, treating and compression services to producers in unconventional shale plays located in West Virginia, Wyoming, Texas, Arkansas, New Mexico and Louisiana. The Company owns rich gas systems in the Marcellus, Powder River Basin, Niobrara, Barnett, Granite Wash, and Avalon/Bone Spring Shale plays, and dry gas gathering systems in the Barnett, Fayetteville and Haynesville/Bossier Shale plays. The NGL and crude services operations provide gathering, storage and transportation services to producers, refiners, marketers, and others that effectively provide flow assurances to customers, as well as the production and sale of salt products. Operations in NGL and Crude segment include crude oil rail terminals, the Arrow gathering system, an NGL storage facility, and U.S Salt, LLC. The Storage and Transportation operations provide natural gas storage and transportations services to third parties. The corporate operations include all general and administrative expenses that are not allocated to the reportable segments. 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 approximately 41.0 Bcf namely Stagecoach, Thomas Corners, Steuben, and Seneca Lake. Further, the Company owns natural gas transportation facilities located in New York and Pennsylvania namely North-South Facilities, MARC I Pipeline, and East Pipeline. Sales of crude oil, NGLs and salt are recognized at the time product is shipped or delivered to the customer depending on the sales terms. The Company is expanding its gathering and compression facilities in the Marcellus Shale.