SOC Follow-Up Report – System-wide Pack Condition
DURATION OF EVENT
A system-wide Strained Operating Condition (“SOC”) for a Pack condition was declared by EPNG as follows:
Effective: Gas Day October 13, 2025
Imbalance Threshold: 5%
AFFECTED AREA(S)/LOCATION(S)
All shippers system-wide were subject to the requirements of the SOC declaration.
TIMELINE
[October 13, 2025, 8:56 am Mountain Daylight Time (MDT)] EPNG declared a system-wide SOC for a Pack condition effective Gas Day October 13, 2025, with the imbalance threshold set at 5% (Critical Notice No. 626421).
[October 14, 2025, 6:36 am MDT] EPNG lifted the subject system-wide SOC effective Gas Day October 14, 2025 (Critical Notice No. 626432).
APPLICABLE OPERATING CONDITIONS
Monday, October 13, 2025
- EPNG system linepack started the Gas Day at 8,063 MMcf, which was an increase of 187 MMcf compared to the previous Gas Day.
- At 8:56 am MDT, EPNG declared a system-wide SOC for a Pack condition (Notice No. 626421) effective Gas Day October 13, 2025. The EPNG system was experiencing a high linepack condition due to receipts in excess of scheduled quantities and deliveries below scheduled quantities.
- Washington Ranch was on full injection, averaging 105 MMcf.
Tuesday, October 14, 2025
- EPNG system linepack started the Gas Day at 7,977 MMcf, which was a decrease of 86 MMcf compared to the previous Gas Day.
- At 6:36 am MDT, EPNG lifted the system-wide SOC for Pack condition (Notice No. 626432) effective Gas Day October 14, 2025. Customer response was sufficient to decrease EPNG's linepack to acceptable levels.
- Washington Ranch was on maximum injection, averaging 101 MMcf.
ACTIONS TAKEN BY EPNG AND SHIPPERS
The following actions were taken:
1. EPNG declared a system-wide SOC for a Pack condition on October 13, 2025, at 8:56 am MDT. The system-wide SOC was in effect for Gas Day October 13, 2025, only.
2. After EPNG declared the system-wide SOC, customers took corrective actions to align their scheduled supplies with their actual deliveries.
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