Colorado Interstate Gas Company, L.L.C.
October 1, 2026
Storage Bottom Hole Pressure Surveys - Update
The four Storage Fields utilized by Colorado Interstate Gas Company, L.L.C. (CIG) to provide No Notice Transportation (NNT) and Storage Services will undergo scheduled Bottom Hole Pressure Surveys from September 15, 2026 through October 19, 2026. As explained below, this work will impact firm customers' ability to inject during this period by reducing the regular Available Daily Injection Quantity (ADIQ). For informational purposes, CIG has also included an estimate of withdrawal impacts so customers may plan their business accordingly.
The week that maintenance is scheduled for each field is listed below. Each field's maximum injection and withdrawal capability is shown as well as the field's related percentage of total injections/withdrawals and the net injection/withdrawal available for that week. These numbers are based on the projection that storage inventory will be within normal guidelines at the end of September.
*Update – Due to inclement weather Flank Bottom Hole Morrow Zone end date has been adjusted from October 2 to October 5
Outage Scheduled
Field
NNT Injection
NNT Withdrawal
Field Contribution to Injection (MMcf/d)
Field Percentage of Total Injection
Total NNT Injection Available during Outage (MMcf/d)
Field Contribution to Total Withdrawal (MMcf/d)
Field Percentage of Total Withdrawal
Total NNT Withdrawal Available during Outage (MMcf/d)
September 23 – October 5
Flank- Morrow
75*
23.1
325
120
20.3
532
September 15 – September 22
Flank - Cherokee
22.6
472
Latigo
65
20.0
260
38
9.3
370
September 23 – September 30
Ft. Morgan
125
38.5
200
270
60.1
179
October 12 – October 19
Boehm
60
18.5
265
10
2.9
331
*Note: Flank has two reservoirs which will be tested separately. Flank Morrow reservoir will be tested beginning September 23 through October 5, and Flank Cherokee reservoir will be tested beginning September 15 through September 22. The impact to injection capability will be minimal, and no reductions to customer's firm injection rights will be made during these separate Flank Bottom Hole Pressure Surveys.
During the Bottom Hole Pressure Surveys for FT. Morgan, Latigo and Boehm firm shippers' ADIQ will be reduced by the percentage indicted above consistent with Part IV: General Terms and Conditions (GT&C) Sections 1.2(c) and 11.6 of CIG's FERC Gas Tariff Second Revised Volume No.1. For example, during Ft. Morgan maintenance, shippers will be limited to 61.5% (100-38.5) of the Standard ADIQ
Other Impacts to Shippers:
1. Shippers are asked to manage flowing supplies to keep injections and withdrawals within the adjusted limits. If small injection overruns occur, they will be based on the adjusted limits and will be authorized for NNT customers. However, if operational concerns arise because of higher levels of overrun injections, a Strained Operating Condition (SOC) may need to be implemented, and overruns will not be authorized.
2. During the week of the Ft. Morgan outage, injections under the High Available Daily Injection Quantity (High ADIQ) option described in GT&C Section 1.2 will not be supported.
3. Injections to and withdrawals from interruptible storage accounts will not be scheduled during the period of Bottom Hole Pressure Surveys.
For scheduling questions, please contact the Nominations and Scheduling Hotline 1-800-238-3764, option 2.
Any comments or questions about this report should be directed to Hayden Garfield (719) 726-5311 or Mike Burleson (719) 640-1577.
For contractual issues, please contact your Marketing Representative.
Thank you for your assistance during this storage field maintenance.
Mike Burleson
Manager, CIG Gas Control
Kinder Morgan Western Pipelines
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