Northern has scheduled the planned service outages that will affect operating capacity within the months of November 2019 through February 2020. Please review the Planned Service Outage Summary for detailed information related to each outage.

A brief description of the most recent change(s) to the Planned Service Outage Summary follows.

Market/Field Areas Combined

Allocation Group(s)/Point(s): Beatrice North (Group 832) and Field to Demarc (Group 831)

Location: Northern’s mainlines located between the Macksville, Kansas and Oakland, Iowa compressor stations

Project Description: Pipeline maintenance and modifications along the pipelines from the Macksville, Kansas compressor station north to the Clifton, Kansas compressor station (Demarc) in the Field Area, and from Clifton, Kansas to the Oakland, Iowa compressor stations in the Market Area

Month(s): November 2019 through February 2020

·   Actual outage dates and capacity impacts are dependent upon receipt of the in-line inspection report and will be updated as additional information becomes available.

Direction of Flow: Delivery

Capacity Impact: Primary firm service will not be impacted.

Revision: Due to rescheduled outages, capacity impacts have been updated for Beatrice North (Group 832) during November 2019 and capacity impacts added for December 2019. Capacity impacts have been updated for Field to Demarc (Group 831) during November 2019 and December 2019. Capacity impacts have also been added for Field to Demarc (Group 831) for the months of January 2020 and February 2020.

 Field Area

Allocation Group(s)/Point(s): ETC Sunray Plant (POI 58676), Sunray Low (Group 10), Sunray High (Group 32), and Beaver C System (Group 31)

Location: Sunray, Texas compressor station

Project Description: Station modifications and maintenance at the Sunray, Texas compressor station

Month(s): November 2019 and December 2019

Direction of Flow: Receipt

Capacity Impact: Northern anticipates primary firm service will be impacted.

Note: During the November 12-17, 2019 outage, Northern will not have operational flexibility to increase receipts in Sunray Low (Group 10).

Revision: Due to rescheduled outages, capacity impacts during November 2019 for Sunray Low (Group 10) and Sunray High (Group 32) have been updated. Capacity impacts during December 2019 have also been added for Sunray Low (Group 10) and Sunray High (Group 32).

Allocation Group(s)/Point(s): Brownfield North (Group 1022), Mitchell to Gaines (Group 825) and Seminole Subsystem (Group 598)

Location: Claude, Texas and Pampa, Texas compressor stations

Project Description: Station modifications at the Claude, Texas and Pampa, Texas compressor stations

Month(s): December 2019

Direction of Flow: Delivery for Brownfield North (Group 1022); receipt for Mitchell to Gaines (Group 825) and Seminole Subsystem (Group 598)

Capacity Impact: Northern anticipates primary firm capacity will be impacted for Brownfield North (Group 1022) and Mitchell to Gaines (Group 825). Primary firm service will not be impacted for Seminole Subsystem (Group 598).

Allocation Group(s)/Point(s): Spraberry 12-inch (Group 601)

Location: Spraberry, Texas compressor station

Project Description: Station maintenance at the Spraberry, Texas compressor station

Month(s): January 2020

Direction of Flow: Delivery

Capacity Impact: Northern anticipates primary firm capacity will be impacted.

Please see Operationally Available Capacity on Northern’s website for current flow information and the Field Area Group Allocation Maps and Market Area Group Allocation Maps for a list of impacted points.

If you have any questions, contact your customer service or marketing representative.