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System Wide Notices - MountainWest Pipeline

TSP Name:

MountainWest Pipeline, LLC

TSP:

092027077

Critical:

Y

Notice Type Desc	Post Date/Time	Notice Eff Date/Time	Notice ID	Subject	Rsp Date/Time	Notice Stat	Prior Notice	Reqrd Rsp
STORAGE	08/31/2026 02:34 PM	09/01/2026 09:00 AM	39091	CLAY BASIN ISS CAPACITY.		1		5

All listed times are CCT

CLAY BASIN ISS CAPACITY.

MountainWest Pipeline LLC (MWP) would like to update its customers with the following:

Beginning in the Timely cycle of Gas Day September 1, 2026, MWP will lift injection restrictions on Interruptible Storage Service (ISS) at Clay Basin. ISS will have a total operational capacity of up to 6.6 MMDth. Increases beyond this limit are not allowed. Please note that there will still be no injections transfers allowed into ISS.

For further information regarding storage capacity and inventory levels, please consult the EBB Clay Basin Inventory report, which provides detailed data and updates.

If you have any questions, please contact your MWP Commercial Services Representative or the Gas Transportation Services Customer Hotline at 801-584-6034.