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TSP Name:
Critical Notice Description:
Notice Effective Date:
Notice Effective Time:
Notice End Date:
Notice End Time:
Notice Identifier:
Notice Status Description:
Notice Type:
Posting Date:
Posting Time:
Prior Notice Identifier:
Required Response
Indicator Description:
Response Date:
Response Time:
Subject:
East Tennessee Natural Gas, LLC
Critical notice
10/20/2025
01:06:14 PM
01/18/2026
01:06:14 PM
168886
Initiate
Capacity Constraint
10/20/2025
01:06:14 PM
No response required
ETNG 3100-1 and 3300-1 Line Unplanned Outage
ETNG has experienced unplanned outages which will require detailed investigations on its 3100-1 Line as well as its 3300-1 Line. ETNG is expediting repair efforts to restore these lines to full capacity. As a result of these detailed investigations, ETNG will have to implement pressure restrictions on the 3100-1 and 3300-1 Lines until the pipelines have been evaluated and appropriately remediated.
3100-1:
As a result of the unplanned outage ETNG will require detailed investigations on the 3100-1 Line Valve Sections 01A - 2 between its Dixon Springs and Gainsboro Compressor Stations as well as Valve Section 01 between its Gainsboro and Monterey Compressor Stations.
As a result of these investigations, ETNG estimates west to east capacity on the 3100 Line will be as follows:
Ridgetop: 175,000 Dth/d
Dixon Springs: 174,000 Dth/d
Gainsboro: 172,000 Dth/d
Monterey: 162,000 Dth/d
Clark Range: 162,000 Dth/d
Wartburg: 162,000 Dth/d
ETNG will take into consideration the reduced capacity during the timely cycles for future Gas Days beginning Gas Day October 22, 2025. ETNG does not anticipate restrictions to primary firm capacity but will review nominations during the Timely Cycle each day.
3300-1:
As a result of the unplanned outage ETNG will require detailed investigations on the 3300-1 Line Valve Sections 15 between its Rural Retreat Compressor Station and End of Line segment.
As a result of these investigations, ETNG estimates capacities east of Rural Retreat on the 3300-1 Line towards Roanoke will be approximately 48,000 Dth/d. ETNG also anticipates lower than normal pressures downstream of Rural Retreat on the 3300-1 Line during these investigations.
ETNG will take into consideration the reduced capacity during the timely cycles for future Gas Days beginning Gas Day October 22, 2025. ETNG does not anticipate restrictions to primary firm capacity but will review nominations during the Timely Cycle each day.
There is no isolation required at this time, however if an isolation is determined from the detailed investigations the following meters will be unavailable for flow:
MR 59196 - ROANOKE WEST SALEM-ROANOKE CO., VA
MR 59105 - ROANOKE CAVE SPRINGS
MR 59004 - ROANOKE CLEARBROOK
MR 59003 - ROANOKE SALEM
ETNG will post updates to the status of the repairs as soon as it is known.
Please contact your Operations Account Representative should you have any questions.
TSP Name:
Critical Notice Description:
Notice Effective Date:
Notice Effective Time:
Notice End Date:
Notice End Time:
Notice Identifier:
Notice Status Description:
Notice Type:
Posting Date:
Posting Time:
Prior Notice Identifier:
Required Response
Indicator Description:
Response Date:
Response Time:
Subject:
East Tennessee Natural Gas, LLC
Critical notice
10/20/2025
01:06:14 PM
01/18/2026
01:06:14 PM
168886
Initiate
Capacity Constraint
10/20/2025
01:06:14 PM
No response required
ETNG 3100-1 and 3300-1 Line Unplanned Outage
ETNG has experienced unplanned outages which will require detailed investigations on its 3100-1 Line as well as its 3300-1 Line. ETNG is expediting repair efforts to restore these lines to full capacity. As a result of these detailed investigations, ETNG will have to implement pressure restrictions on the 3100-1 and 3300-1 Lines until the pipelines have been evaluated and appropriately remediated.
3100-1:
As a result of the unplanned outage ETNG will require detailed investigations on the 3100-1 Line Valve Sections 01A - 2 between its Dixon Springs and Gainsboro Compressor Stations as well as Valve Section 01 between its Gainsboro and Monterey Compressor Stations.
As a result of these investigations, ETNG estimates west to east capacity on the 3100 Line will be as follows:
Ridgetop: 175,000 Dth/d
Dixon Springs: 174,000 Dth/d
Gainsboro: 172,000 Dth/d
Monterey: 162,000 Dth/d
Clark Range: 162,000 Dth/d
Wartburg: 162,000 Dth/d
ETNG will take into consideration the reduced capacity during the timely cycles for future Gas Days beginning Gas Day October 22, 2025. ETNG does not anticipate restrictions to primary firm capacity but will review nominations during the Timely Cycle each day.
3300-1:
As a result of the unplanned outage ETNG will require detailed investigations on the 3300-1 Line Valve Sections 15 between its Rural Retreat Compressor Station and End of Line segment.
As a result of these investigations, ETNG estimates capacities east of Rural Retreat on the 3300-1 Line towards Roanoke will be approximately 48,000 Dth/d. ETNG also anticipates lower than normal pressures downstream of Rural Retreat on the 3300-1 Line during these investigations.
ETNG will take into consideration the reduced capacity during the timely cycles for future Gas Days beginning Gas Day October 22, 2025. ETNG does not anticipate restrictions to primary firm capacity but will review nominations during the Timely Cycle each day.
There is no isolation required at this time, however if an isolation is determined from the detailed investigations the following meters will be unavailable for flow:
MR 59196 - ROANOKE WEST SALEM-ROANOKE CO., VA
MR 59105 - ROANOKE CAVE SPRINGS
MR 59004 - ROANOKE CLEARBROOK
MR 59003 - ROANOKE SALEM
ETNG will post updates to the status of the repairs as soon as it is known.
Please contact your Operations Account Representative should you have any questions.