Northwest Pipeline LLC NOTICE #31355 Notice of ACA Rate Change posted on Sep 15 2023 7:23AM TSP Name: Northwest Pipeline LLC TSP: 67977322 Critical: N Notice Stat Desc: INITIATE Notice Type Desc: RATES AND CHARGES Post D/T: 09/15/2023 7:23 AM MCT Notice Eff D/T: 09/15/2023 7:23 AM MCT Notice End D/T: Reqrd Rsp Desc: No response required Rsp D/T: Notice ID: 23-189 Prior Notice: Subject: Notice of ACA Rate Change Notice Text: As a customer service, Northwest is notifying its Shippers that the ACA rate 
will change from $0.0015/Dth to $0.0014/Dth effective October 1, 2023.

Information regarding the ACA charge can be found on the Commission’s website 
at:
https://ferc.gov/industries-data/natural-gas/overview/general-information/annual-charges

Please direct any questions to Mike Heeney at michael.d.heeney@williams.com 
or Jennifer Rowan at jennifer.rowan@williams.com.