MountainWest Overthrust Pipeline

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MountainWest Overthrust Pipeline
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Maintenance Construction Schedule - MountainWest Overthrust Pipeline

2025 Schedule

Period	Category	Preliminary Dates	Duration	Location	Project	Possible Customer Impact	Current Capacity (Dth/d)	Restricted Capacity (Dth/d)	Anticipated Firm Cut Quantity	Anticipated Total Nomination Cut %
October	Construction	October 8 - 14	7 Days	Wamsutter	Overthrust West Compression Expansion	MAP 10827 capacity reduction to 330,000 Dth/d	MAP 10827 676,000 Dth/d	330,000 Dth/d MAP 10827 Wamsutter (REC)	260,000 Dth	45%
November	Commissioning	November 6 - 8	3 Days	Rock Springs Compressor Station	Overthrust West Compression Expansion	• Opal Constraint: From 1,449,100 Dth/d down to 1,151,000 Dth/d • Whitney Canyon Constraint: From 345,000 Dth/d down to 291,000 Dth/d • MAP 10005 Kanda/Col: From 300,000 Dth/d down to 173,667 Dth/d • MAP 10013 WIC RS: From 825,000 Dth/d down to 347,333 Dth/d	Opal Constraint: 1,449,100 Dth/d Whitney Canyon Constraint: 345,000 Dth/d MAP 10005 Kanda/Col: 300,000 Dth/d MAP 10013 WIC RS: 825,000 Dth/d	Opal Constraint: 1,151,000 Dth/d Whitney Canyon Constraint: 291,000 Dth/d MAP 10005 Kanda/Col: 173,667 Dth/d MAP 10013 WIC RS: 347,333 Dth/d	TBD	32%

Note: This schedule is subject to change. It is recommended the Shippers monitor MountainWest Pipeline's critical notices about schedule revisions.