Northwest Pipeline LLC NOTICE #28558 JP maintenance reminder and limited balancing flexibility posted on Sep 26 2018 12:30PM TSP Name: Northwest Pipeline LLC TSP: 67977322 Critical: Y Notice Stat Desc: INITIATE Notice Type Desc: STORAGE Post D/T: 09/26/2018 12:30 PM MCT Notice Eff D/T: 09/26/2018 12:30 PM MCT Notice End D/T: Reqrd Rsp Desc: No response required Rsp D/T: Notice ID: 18-091 Prior Notice: Subject: JP maintenance reminder and limited balancing flexibility Notice Text: Northwest would like to remind customers of the Jackson Prairie scheduled maintenance October 1-12, 2018. Northwest will not be accepting injection or withdrawal nominations during the outage. Dominion Energy has also reported that the Clay Basin storage facility will be limited during part of this time as well. The shut in of both facilities will severely limit Northwest's balancing flexibility. Customers are encouraged to stay on rate during the outage to avoid further action. Northwest would also like to remind its shippers that the Park and Loan availability will be limited at both storage facilities and to watch for the available quantities posted each morning on Northwest's web site at www.northwest.williams.com. Please contact your Marketing Services Representative or the Northwest Pipeline Hotline at (801) 584-7301 if you have any questions. DA/JR