Colorado Interstate Company, L.L.C.

September 9, 2026

Force Majeure – CIG Line No 155A -  Greasewood to Wamsutter

Colorado Interstate Company, L.L.C. (CIG) has identified anomalies on Line 155A between Greasewood and Wamsutter, which impacts the safety and integrity of the pipeline, and which requires immediate attention. The repairs will require a pressure restriction, isolation and a corresponding reduction in operational capacity.

Accordingly, the operational capacity through the Segment 124 (GWDC) Greasewood Compressor constraint will be reduced by 170,000 dekatherms per day (Dth/d), Scheduling PIN 892268 WRH/CIG (FLT) FLAT TOP RECEIPT will be reduced by 544,700 dekatherms per day (Dth/d), Scheduling PIN 800794 KTRESRCE/CIG (WRM) WHITE RIVER will be reduced by 46,600 dekatherms per day (Dth/d), and Scheduling PIN 891831 WILLFPR/CIG (SNW) SANDWASH MOFFAT will be reduced by 32,600 dekatherms per day (Dth/d) effective 9/9/2026, Cycle 4, Intraday 2 until further notice.

CIG will be posting an updated maintenance notice to reflect the total impact through the Segment 124 (GWDC) Greasewood Compressor constraint, Scheduling PIN 892268 WRH/CIG (FLT) FLAT TOP RECEIPT, Scheduling PIN 800794 KTRESRCE/CIG (WRM) WHITE RIVER, and Scheduling PIN 891831 WILLFPR/CIG (SNW) SANDWASH MOFFAT.

CIG will provide updates as more information becomes available.

This incident constitutes an event of Force Majeure under Section 11.5 of CIG's FERC Gas Tariff Second Revised Volume No. 1.