Energy West Development, Inc.

Original Volume No. 1

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Effective Date: 06/11/2010, Docket: RP10-732-000, Status: Effective

Second Revised Sheet No. 16 Second Revised Sheet No. 16

Superseding: First Revised Sheet No. 16

RATE SCHEDULE IT

Interruptible Transportation Service

1. AVAILABILITY

This rate schedule is available for interruptible Transportation of Natural Gas by

Transporter for any party (hereinafter called "Shipper"), when:

(a) Shipper has made a valid request for interruptible Transportation and has met the

standards set forth in Section 3 of the General Terms and Conditions of this

Tariff of which this rate schedule is a part; and

(b) Shipper has executed a Transportation Service Agreement in the form contained in

this Tariff of which this rate schedule is a part.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 This IT Rate Schedule and the rates set forth herein shall apply to all

interruptible Transportation Service rendered under Transportation Service

Agreements for such service whenever Transporter is able and willing to offer

such interruptible Transportation Service. Transportation service provided

hereunder is subject to curtailment or interruption as Transporter deems

necessary. To the extent tendered by Shipper or Shipper's Agent, Transporter

shall receive from Shipper, or for the account of Shipper, at points on

Transporter's system (hereinafter referred to as "Receipt Point(s)") for

Transportation hereunder daily quantities of Gas up to Shipper's Maximum

Transportation Quantity (taking into account the L & U Percentage) as specified

in the Transportation Service Agreement.

2.2 Upon receipt of such Natural Gas from Shipper or for Shipper's account,

Transporter shall (after making allowance for the L & U Percentage) transport and

deliver to Shipper or to a downstream entity for Shipper's account quantities of

Gas up to Shipper's Maximum Equivalent Quantity at such points on Transporter's

system as have been scheduled for the delivery of Gas for Shipper's account

(hereinafter referred to as "Delivery Point(s)").

2.3 Provided such quantities have been scheduled in accordance with Section 4 of the

General Terms and Conditions of this Tariff, Shipper may obtain Transportation of

quantities of Gas in excess of its Maximum Transportation Quantity on any day if

in Transporter's reasonable judgment Transportation of such Gas can be accomplished

by Transporter without detriment to any other Shipper under any of Transporter's

rate schedules. Such excess quantities shall be deemed to be Authorized Overrun

Quantities.

3. RATE

3.1 Unit Rates. The applicable maximum and minimum unit rates are set forth in the

Statement of Rates for Rate Schedule IT and are hereby incorporated herein. The

applicable unit rates to be charged on any day by Transporter for Gas scheduled

for Shipper shall not be in excess of the maximum unit rate nor less than the

minimum unit rate. The same minimum and maximum rates are applicable whether

the service constitutes a Backhaul or otherwise.

3.2 Monthly Bill. For Shippers executing a Transportation Service Agreement pursuant

to this IT Rate Schedule and beginning with the Commencement Date and for each

Month thereafter, Transporter shall charge and Shipper shall pay Transporter the

sum of the following amounts: