NORTH SEATTLE LATERAL UPGRADE PROJECT Northwest Pipeline, a subsidiary of Wiiiiams, is proposing to remove approximately 6.9 miles of its existing 8-inoh-diameter North Seattle Lateral pipeline and replace it with 20-inch-diameter pipeline, primarily in the same trench. I The project is in Snohomish County, Washington. The proposed project would increase service reliability and enable Northwest Pipeline to provide up to an incremental 196,311 dekatherms per day of firm capacity to serve Puget Sound Energy. THE NORTH SEATTLE LATERAL UPGRADE PROJECT WOULD CONSIST OF THE FOLLOWING FACILITIES: > Replace 6.9-miles of S-inch-diameter pipeline with 20-inch- diameter pipeline, > Rebuild the existing North Seattle/Everett meter station in order to accommodate the increased delivery capacity of the North Seattle Lateral, > Relocate an existing 8-inch pig launcher and a 20-inch pig receiver, > Replace an existing 8-inch mainline valve with a 20-Inch valve. KEY MILESTONES > December 6, 2016 open house for affected landowners > Project filed with the Federal Energy Regulatory Commission (FERC) on May 11, 2017 > Anticipated receipt of FERC certificate in April 2018 > Construction activities planned during the summer and fall of 2019. Snohomish SItver Firs / Snohomish Co North Creek Aiderwood Manor ii. '1 '""T I % Ci'fl t ■ it .-'Kii - jja . Bothelt '-ff. Lake Forest 4. Kenmorc Ts,wobdinvilie \ KingftGo NORTHWEST PIPELINE LLC PROJECT OVERVIEW MAP 20" NORTH SEATTLE LATERAL UPGRADE PROJECT T-27-N, R-5 & G-E SNOHOMISH COUNTY. WASHINGTON Legend Williams. Y Mile Post MortTi Seattle Lateral Upgrade Pro|flct Existing NWP Pipeline OVERVIEW [email protected] 16504 9th Ave SE, Ste 101 Millcreek, WA98012 Toll-free: 866-623-4337 Local; 425-741-1300 We make energy happen.' Will^. (800) WILLIAMS | www.williams.com ©2017 The Williams Companies, Inc. All rights reserved. 0915/02091FS028