MountainWest Overthrust Pipeline

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MountainWest Overthrust Pipeline
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Maintenance Construction Schedule - MountainWest Overthrust Pipeline

2026 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 %
June	Battery Charger Replacement	June 23	1 Day	Whitney Canyon	Battery Charger Replacement	MAP 10002 from 264,083 Dth/d to 0 Dth/d • MAP 10006 from 262,000 Dth/d to 0 Dth/d • MAP 10015 from 220,000 Dth/d to 0 Dth/d • MAP 10032 from 344,000 Dth/d to 0 Dth/d • MAP 10832 from 344,000 Dth/d to 0 Dth/d	MAP 10002 264,083 Dth/d • MAP 10006 262,000 Dth/d • MAP 10015 220,000 Dth/d MAP 10032 344,000 Dth/d • MAP 10832 344,000 Dth/d	TBD	ALL	100%
June	Pig	June 25 - 26	2 Days	ML 116 Labarge to Whitney Canyon	Smart Tool	Yes	TBD	TBD	TBD	TBD
July	Pig	July 22 - 24	3 Days	ML 116 Labarge to Whitney Canyon	Smart Tool	Yes	TBD	TBD	TBD	TBD
August	Compressor Maintenance	August 11 -14	4 Days	Rock Springs Compressor Station	Station ESD Testing	All Compression Offline Capacity constraints at ML 122 Rendezvous, Whitney Canyon Constraint, MAP 10005 Kanda/Col, and MAP 10013 WIC RS	Kanda/Coleman Segment: 410,000 Dth/d	ML 122 Rendezvous: 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	TBD
September	Compressor Maintenance	Sept 7 -11	5 Days	Roberson Compressor Station	Station ESD Testing	YES	TBD	TBD	TBD	TBD

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