Connect Summer 2017 | Page 2

Northeast Gathering & Processing Well-Positioned to Help Customers Capitalize on New Markets, Increased Demand Through steady and efficient capital investment, Williams has purposefully built the leading network of midstream infrastructure in the northeast United States, resulting in best-in-class operational efficiency and speed-to- market advantages for our customers. Foundational assets now in place With this strategic investment, our world-class assets now span both the Marcellus and Utica basins, allowing us to gather, process and transmit wet gas, and gather and deliver dry gas. In Northeast Pennsylvania, the heart of the highly productive and low-cost Marcellus, our large-scale supply hubs currently gather 5.7 Bcf/d and have extensive, reliable and robust delivery point capabilities to markets in the Northeast, Mid-Atlantic, Southeast and Gulf Coast U.S. markets, as well as Canada. Since 2011, Williams has spent an average of about $1 billion in annual capital expenditures on our gathering and processing network to expand and upgrade our existing infrastructure; improve safety, reliability and operational performance; and help producers connect new wells. This doesn’t even count our significant investment in transmission pipelines, such as Transco and our major Atlantic Sunrise expansion. In the Utica and Southwest Marcellus, we have and/or are involved with a very powerful combination of premier assets. Our Utica Supply Hub ­— which includes Cardinal Gathering, Flint Gathering and Utica East Ohio — currently has about 1.2 Bcf/d between rich and lean systems. It also processes about 800 MMcf/d, and has a 135,000 bpd C2+ fractionation capacity. Through this investment, we have:  More than quadrupled our gathering and processing pipeline mileage in the region, going from 1,000 to nearly 4,200 miles  Increased gathering volume from slightly more than 110 million cubic feet per day (MMcf/d) to nearly 7 Bcf/d. All told, the natural gas volume Williams touches in the Northeast United States is enough to meet energy demand for the entire state of California or 17 other states and Washington, D.C., combined.  Increased horsepower from 25,000 in 2010 to about 800,000 today 2 Our Ohio River Supply Hub includes Ohio Valley Midstream, Laurel Mountain Midstream and Marcellus South. Together, these assets have a gathering capacity of 1.5 Bcf/d of rich/ lean gas; up to 800 MMcf/d in processing capacity (with a nameplate capacity of 720 MMcf/d); and about 80,000 bpd of C2+ fractionation capacity. Additionally, within this footprint, Williams has a more than 29-percent ownership stake in and operates Blue Racer Midstream. This includes 688 miles of gathering pipeline; 800 MMcf/d of nameplate processing capacity; residue connections to DTI, DEO, TETCO and REX; 123,000 bpd of C2+ fractionation; 153 miles of NGL and condensate transport; truck, rail and barge facilities; and several NGL connections (including WPZ, ATEX, Mariner West, Mariner East and TEPPCO). CONNECT: A PUBLICATION FOR WILLIAMS CUSTOMERS | VOL. 5, ISSUE 1