Maintenance Construction Schedule - MountainWest 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 %
September - October System Integrity September 15 - 27 13 days ML 23 Line Lowering ML23 Segment from 30,250 Dth/d down to 0 Dth/d, ML26 Segment from 7,750 Dth/d down to 0 Dth/d,
Nominations at West Side Canal MAP 9, Slater Dome MAP 344, Blue Gravel MAP 6, Bulldog MAP 423, Chandler MAP 3, and North Craig MAP 1 will only be allowed to deliver to Greeley Gas MAP 804.
ML23 Segment 30,250 Dth/d ML26 Segment 7,750 Dth/d ML23 Segment 0 Dth/d
ML26 Segment 0 Dth/d
Nominations at West Side Canal MAP 9, Slater Dome MAP 344, Blue Gravel MAP 6, Bulldog MAP 423, Chandler MAP 3, and North Craig MAP 1 will only be allowed to deliver to Greeley Gas MAP 804.
TBD TBD
October Reservoir Test October 4 - 15 12 Days Clay Basin Annual Injection Test No physical withdraws allowed from GD October 4 through GD October 6. 
- Tuesday, 10/07: reservoir conditioning at 225,000 Dth/d for 24 hrs; 
- Wednesday, 10/08: injection test at 250,000 Dth/d for 24 hrs; 
- Thursday 10/09 to Thursday, 10/16: field shut in.
Varies, see latest EBB posting October 7: 225,000 Dth/d 
October 8: 250,000 Dth/d 
October 9 - 15: 0 Dth/d
ALL 100%

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