MountainWest Pipeline

Customer Access

Transmission Services

MountainWest Pipeline
- Informational Postings
  - Capacity
  - Gas Electric Coordination
  - Gas Quality
    - Gas Quality Data
      - Daily Gas Quality
      - CHDP Zone Map
    - Methodology
    - Tariff Reference
  - Index of Customers
  - Locations
  - Notices
  - Posted Imbalances
  - Standards of Conduct
  - Tariff
  - Transactional Reporting
  - Other
  - Downloads
  - Search
  - Customer Activites
    - myQuorum Login
  - Site Map
- System Operations
  - System Maintenance Calendar
- MWP Home
MountainWest Overthrust Pipeline
- Informational Postings
  - Capacity
  - Gas Electric Coordination
  - Gas Quality
    - Gas Quality Data
      - Representative Mainline Points
      - Receipt Points (CHDP)
    - Methodology
    - Tariff Reference
  - Index of Customers
  - Locations
  - Notices
  - Posted Imbalances
  - Standards of Conduct
  - Tariff
  - Transactional Reporting
  - Other
  - Downloads
  - Search
  - Customer Activites
    - myQuorum Login
  - Site Map
- System Operations
  - System Maintenance Calendar
- MWOP Home
White River Hub
- Informational Postings
  - Capacity
    - Operationally Available
    - Unsubscribed
  - Gas Electric Coordination
  - Gas Quality
    - Gas Quality Data
      - Daily Gas Quality
    - Methodology
    - Tariff Reference
  - Index of Customers
  - Locations
  - Notices
  - Posted Imbalances
  - Standards of Conduct
  - Tariff
  - Transactional Reporting
  - Other
  - Downloads
  - Search
  - Customer Activites
    - myQuorum Login
  - Site Map
- System Operations
  - System Maintenance Calendar
- WRH Home

System Wide Notices - MountainWest Pipeline

TSP Name:

MountainWest Pipeline, LLC

TSP:

092027077

Critical:

Notice Type Desc	Post Date/Time	Notice Eff Date/Time	Notice ID	Subject	Rsp Date/Time	Notice Stat	Prior Notice	Reqrd Rsp
STORAGE	10/27/2026 03:30 PM	11/01/2026 09:00 AM	39431	CLAY BASIN ISS CAPACITY.		1		5

All listed times are CCT

CLAY BASIN ISS CAPACITY.

Beginning in the Timely cycle of Gas Day November 1, 2026, MountainWest Pipeline, LLC (MWP) will lift injection restrictions on Interruptible Storage Service (ISS) at Clay Basin. ISS will have a total operational capacity of up to 9.4 MMDth available for injections and transfers.

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