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Intermountain Gas Company's residential and small commercial billing categories are listed below. To find out what price you are currently paying, look at the billing rate section of your bill.  (See Understanding Your Bill).  If you think you should be in a different category, please call our Customer Service Center at 377-6840 in the Boise/Treasure Valley area or 1-800-548-3679 from all other areas. We are available to take your calls from 7:00 a.m. to 7:00 p.m., MST, Monday through Friday.

Your bill also contains a customer charge. This is our basic charge for services, which include customer billing and meter maintenance.

Effective Date: 10/1/2012
RS-1 Residential Service for:
April-November
Customer Charge $2.50 per bill
Commodity Charge $0.85696 per therm*
December-March
Customer Charge $6.50 per bill
Commodity Charge $0.74440 per therm*

* Includes:
   Temporary purchased gas cost adjustment of $(0.02618)
   Weighted average cost of gas of $0.33489

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Effective Date: 10/1/2012
RS-2 Residential Service for:
April-November
Customer Charge $2.50 per bill
Commodity Charge $0.70238 per therm*
December-March
Customer Charge $6.50 per bill
Commodity Charge $0.66875 per therm*

* Includes
   Temporary purchased gas cost adjustment of $(0.02332)
   Weighted average cost of gas of $0.33489

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Effective Date: 10/1/2012
GS-1 General Service for:
April-November
Customer Charge $2.00 per bill
Commodity Charge:
First    200 therms per bill @ $0.72011*
Next 1,800 therms per bill @ $0.69838*
Over 2,000 therms per bill @ $0.67736*
December-March
Customer Charge $9.50 per bill
Commodity Charge:
First    200 therms per bill @ $0.66926*
Next 1,800 therms per bill @ $0.64806*
Over 2,000 therms per bill @ $0.62760*
   
For separately metered deliveries of gas utilized solely as Compressed Natural Gas Fuel in vehicular internal combustion engines.
Customer Charge $9.50 per bill
Commodity Charge $0.62760 per therm*
   

* Includes:

   Temporary purchased gas cost adjustment of $(0.02861)
   Weighted average cost of gas of $0.33489

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Effective Date: 10/1/2012
IS-R Interruptible Service for:
April-November
Customer Charge $2.50 per bill
Commodity Charge: $0.66875 per therm*
December-March
Customer Charge $6.50 per bill
Commodity Charge: $0.66875 per therm*
   

* Includes:

   Temporary purchased gas cost adjustment of $(0.02332)
   Weighted average cost of gas of $0.33489

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Effective Date: 10/1/2012
IS-C Interruptible Service for:
April-November
Customer Charge $2.00 per bill
Commodity Charge:
First    200 therms per bill @ $0.66926*
Next 1,800 therms per bill @ $0.64806*
Over 2,000 therms per bill @ $0.62760*
December-March
Customer Charge $9.50 per bill
Commodity Charge:
First    200 therms per bill @ $0.66926*
Next 1,800 therms per bill @ $0.64806*
Over 2,000 therms per bill @ $0.62760*
   

* Includes:

   Temporary purchased gas cost adjustment of $(0.02861)
   Weighted average cost of gas of $0.33489

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