Construction and Maintenance Schedule 2024


Maintenance Calendar MountainWest Pipeline
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 %
April Reservoir Test April 2 - 11 9 Days Clay Basin Annual Withdrawal Test No physical injections allowed starting GD March 30 through GD April 1.
•GD April 2, constant 250 MMcf/day WD rate.
•GD April 3, constant 275 MMcf/day WD rate.
•GD April 4 through GD April 10, reservoir shut-in
Varies, see latest EBB posting April 2 258,00, April 3 284,000, April 4-11 to 0. All 100%
April System Integrity April 2, April 16, April 18 3 Partial Days JL 46, JL47 Pigging Operations No nominations from MAPs 144, 266, 413, 419, 446, 453. 20k Dth capacity from Altamont Plant MAP 145 until Cycle 4 ID 2 GD 4/2, 4/16, and GD 4/18 JL 47 Myton Segment 130,700 Dth/d Altamont MAP 145 20k, MAPS 144, 266, 413, 419, 446, 453 to 0 110,700 Dth 85%
April Compressor Maintenance April 3 - 4 2 Days Simon Compressor Station Annual Emergency Shutdown (ESD) and Unit Maintenance Capacity reduction on ML22 to Nightingale Segment of 27,650 Dth/d. Increased ML22 pressures for Vermillion Plant MAP 293, Skull Creek Delivery MAP 167, Skull Creek Receipt MAP 967 Nightingale ML22 Segment 206,650 Dth/d Nightingale ML 22 179,000 Dth/d 27,650 Dth 13%
April Construction April 20 - April 24 4 Days Fidlar Compressor Station - Chipeta Plant Inlet Phase 1 Uintah Basin Expansion No nominations to Chipeta Processing (DEL) MAP 821. CHDP Zone 11 restrictions may occur. Chipeta Processing (DEL) MAP 821 220,000 Dth/d.  Chipeta Processing (DEL) MAP 821 to 0. MAPs 266, 359, 413, 419, 446, 453, 458 to 0 Dth Chipeta Processing (DEL) MAP 821 All. 100%
April Compressor Maintenance April 23 - 26 4 Days Oak Spring Compressor Station Annual Emergency Shutdown (ESD) and Unit Maintenance Capacity reduction of 120,000 Dth/d ML 104 Goshen Segment beginning Cycle 1 GD 4/23 through Cycle 5 GD 4/26 ML 104 Goshen 384,500 Dth/d ML 104 Goshen 264,500 Dth/d 120,000 Dth 31%
May Construction May 20 - May 29 10 Days Fidlar Compressor Station - Chipeta Plant Outlet Uintah Basin Expansion No nominations from Chipeta Processing (REC) MAP 421. Chipeta Processing (REC) MAP 421 306,000 Dth/d Chipeta Processing (REC) MAP 421 to 0 All 100%
May Construction May 28 - May 30 3 Days Fidlar Compressor Station - Chipeta Plant Inlet Phase 2 Uintah Basin Expansion No nominations to Chipeta Processing (DEL) MAP 821. CHDP Zone 11 restrictions may occur. Chipeta Processing (DEL) MAP 821 220,000 Dth/d.  Chipeta Processing (DEL) MAP 821 to 0. MAPs 266, 359, 413, 419, 446, 453, 458 to 0 Dth Chipeta Processing (DEL) MAP 821 All. 100%
May Compressor Maintenance May 6th 1 Day Thistle Creek Compressor Station Annual Emergency Shutdown (ESD) and Unit Maintenance Capacity reduction on Goshen ML104 Segment TBD. ML 104 Goshen 384,500 Dth/d ML 104 Goshen 302,000 Dth/d 82,500 Dth 21%
May - June System Integrity TBD 6 Days ML 40 Integrity Digs Reduced pressure for safe excavation requires capacity constraints through JL47/138 at ML40 Segment. JL47/138 at ML 40 Segment 125,500 Firm Dth/d, 55,200 OAC Dth/d JL47/138 at ML 40 Segment 125,500 Firm Dth/d, 30,000 OAC Dth/d 0 Firm Dth/d Cut, 25,200 OAC Dth/d Cut 14%
June Construction June 17 - June 18 2 Days Bluebell Plant Uintah Basin Expansion No nominations to MAP 415, from MAP 815. No physical deliveries to MAP 456 DEUWI NEOLA Delivery (Vernal) Bluebell Del MAP 415 7,600 Dth/d, Bluebell REC MAP 815 15,000 Dth/d Bluebell Del MAP 415, Bluebell REC MAP 815, DEUWI Neola Del MAP 456 (Vernal) to 0 All 100%
June Construction June 27 - June 28 2 Days Brundage Mountain Uintah Basin Expansion No nominations from MAP 458, JL 138 out of service. Capacity reduction on  JL47/138 at ML 40 Segment TBD. Wells Draw MAP 458 70,000 Dth/d JL 47/138 at ML 40 125,500 Firm Dth/d, 55,200 OAC Dth/d Wells Draw MAP 458 to 0. JL 47/138 at ML40 Firm 125,500 Dth/d and OAC Cap 3,000 Dth/d Wells Draw MAP 458 All. ML40 Fidlar Segment 0 Firm Dth/d Cut, 52,200 OAC Dth/d Cut 28%
June Construction To coincide with scheduled plant work early June 2 Days Altamont Plant Uintah Basin Expansion No nominations from Altamont Plant MAP 145, Upalco MAP 446 JL 46 Myton Segment 71,450 Dth/d Altamont MAP 145, Upalco MAP 446 to 0 All (71,450 Dth/d) 100%
June System Integrity June 15 - June 25 10 Days ML 41 Pipeline Replacement No delivery to taps on ML 41 from Indianola Bunker to Payson Gate: Spicer, Ettie Lee, Birdseye, and Scout Camp N/A N/A N/A N/A
July Compressor Maintenance July 8 - 12 4 Days Oak Spring Compressor Station Unit #3 Exchange Capacity reduction on Goshen ML104 segment TBD. ML 104 Goshen 384,500 Dth/d No restrictions necessary per System Planning 0 0%
July System Integrity TBD 4 Days JTL 75 ILI Barrel Installations, both ends of JTL 75 No physical deliveries to DEUWI Evanston South Tap, Lester Tap N/A N/A N/A N/A
August Construction August 5 - 9 3 Days ML 103 Devil's Playground Project No nominations allowed through ML 103 Fidlar Segment. No physical deliveries to MAP 334 Vernal DEUWI Bonanza Tap. ML 103 Fidlar Segment 122,730 Dth/d. ML 103 Fidlar Segment to 0 Dth/d All 100%
September Construction September 3 - 4 2 Days ML 23, ML 26 Cherokee BV No nominations from taps between Sandhills BV and ML 23/JL 65 Junction. No deliveries to Baggs Livestock, Jons & Beeler, Russel Ellis, Baggs 3, Moffat County Garage taps.  Huber Christiansen MAP 18 3900 Dth/d, South Baggs MS 35 MAP 17 8500 Dth/d, South Baggs MS 49 MAP 15 8150 Dth/d, Pole Gulch MS 53 MAP 14 2720 Dth/d, Amoco 4 Mi Shp MS 52 8600 Dth/d, Westside Canal M&R MAP 9 8400 Dth/d Huber Christiansen MAP 18, South Baggs MS 35 MAP 17, South Baggs MS 49 MAP 15, Pole Gulch MS 53 MAP 14, Amoco 4 Mi Shp MS 52, Westside Canal M&R MAP 9 all to 0 All 100%
October Reservoir Test October 1 - October 10 9 Days Clay Basin Annual Injection Test No physical withdraws allowed from GD September 28 through GD September 30.
•GD October 1, constant 275 MMcf/day INJ rate.
•GD October 2, constant 300 MMcf/day INJ rate.
•GD October 3 through GD October 9, reservoir shut-in
Varies, see latest EBB posting October 1 288,750, October 2 315,000, October 3-10 to 0. All 100%

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