MountainWest Pipeline

Summary of Available Firm Capacity

Beginning April 1, 2021

Important Note: Capacity shown in the above table is available for the entire upcoming 12 month period.

Refer to the Available Capacity  Map Point Listing report to determine available capacity at specific receipt and delivery points. The Available Capacity  Map Point Listing report will show the available capacity for the remainder of the current month, and for terms that are less than one year or greater than one year.

Capacity at some receipt and delivery points may require MountainWest Pipeline (MWP) to purchase capacity on MountainWest Overthrust Pipeline or White River Hub, LLC (off system capacity) which will increase the rate for those deliveries. The Third Party (TP)* designation on the Available Capacity  Map Point Listing report indicates the available capacity requiring the use of off system capacity. For Shippers desiring to acquire such capacity, MWP may charge Shipper up to the cost of the off system capacity in addition to MWP's tariff recourse rate, including fuel charges and surcharges. Requests for available capacity that utilizes off system capacity must include any reservation fees associated with these TP charges (refer to the Available Capacity  Map Point Listing to see these charges). Contact your marketing representative for any additional charges that would be necessary.

MWP may, from time to time, hold a bid process for service on capacity that is available or will become available.

Monthly unsold capacity reports are posted on the Unsubscribed capacity section of the MWP website.

The reports include the following:

The Available Capacity  Map Point Listing report shows all unsold firm capacity at specific receipt and delivery points, with dates that the capacity is available. The report allows Shippers to query the system to determine available capacity at specific receipt and delivery points.

To view a flow diagram of the available unsubscribed capacity, refer to the Map of Available Capacity. The flow diagram is a visual representation showing unsold firm capacity that is available for the upcoming 12 month period.

MWP's maximum Monthly Reservation Charge is $5.28804 per Dth.

Discount information: MWP may agree, through acceptance in its contracting system, to allow a variety of discounts between its maximum and minimum rates under any rate schedule in its tariff without undue discrimination. Such discounts may be in addition to a base discount and will not be considered a material deviation from MWP s forms of service agreements when MWP and Shipper agree that a discount applies.

For acquiring available capacity or amending a firm transportation agreement, please refer to MWP's FERC Gas Tariff Section §5 Acquiring Firm Services.

Marketing contacts: Please contact one of the MWP marketing representatives listed below with any questions regarding current or future available capacity: