Energy West Development, Inc.

Original Volume No. 1

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Effective Date: 04/01/2010, Docket: RP10-447-000, Status: Effective

Alternate Fourth Revised Sheet No. 4 Alternate Fourth Revised Sheet No. 4

Superseding: Third Revised Sheet No. 4

RATE SCHEDULE IT

CURRENTLY EFFECTIVE RATES 1/

Commodity Charge (Maximum) $0.092

(Minimum) $0.000

Authorized Overrun Charge Maximum) $0.10

(Minimum) $0.01

L & U Percentage 0.4%

Annual Change Adjustment 2/ (Maximum) $0.0019

Annual Charge Adjustment 2/ (Minimum) $0.0019

1/ For scheduling, imbalance and unauthorized overrun charges see General terms and Conditions,

Section 6. Maximum and minimum rates are applicable to backhaul service.

2/ The Annual Charge Adjustment is per Dth.