Avista Utilities Recent Changes to Washington Natural Gas Rate Schedules The Washington Utilities and Transportation Commission recently approved the NATURAL GAS tariff changes listed below. While Avista Corporation seeks to keep this information current, it cannot guarantee that all changes have been noted. Please be aware, the “official” tariffs, actually in force, are on file with the Washington Utilities and Transportation Commission.

CHANGES EFFECTIVE 8-01-2016 NEW PAGE(s) 20 Revision Sheet 150 th

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OLD PAGE(s) 19th Revision Sheet 150

These changes are to increase the Demand Side Management Rider tariff rate effective 8/1/16. Questions should be directed to Mr. Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 1-11-2016 NEW PAGE(s) Sub. 14th Revision Sheet 101 Sub. 14th Revision Sheet 111 Sub. 14th Revision Sheet 112 Sub. 14th Revision Sheet 121 Sub. 5th Revision Sheet 121A Sub. 14th Revision Sheet 122 Sub. 5th Revision Sheet 122A Sub. 14th Revision Sheet 131 Sub. 5th Revision Sheet 131A Sub. 14th Revision Sheet 132 Sub. 5th Revision Sheet 132A Sub. 14th Revision Sheet 146 3rd Revision Sheet 149 1st Revision Sheet 175D 3rd Revision Sheet 192 Original Sheet 192A

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OLD PAGE(s) 13th Revision Sheet 101 13th Revision Sheet 111 13th Revision Sheet 112 13th Revision Sheet 121 4th Revision Sheet 121A 13th Revision Sheet 122 4th Revision Sheet 122A 13th Revision Sheet 131 4th Revision Sheet 131A 13th Revision Sheet 132 4th Revision Sheet 132A 13th Revision Sheet 146 2nd Revision Sheet 149 Original Sheet 175D 2nd Revision Sheet 192

These changes are to implement WUTC Order No. 05 in Docket No. UG-150205. This is the outcome of Avista’s 2015 General Rate Case filing. In this order, the WUTC approved and adopted a partial settlement agreement, as filed with the Commission. The new natural gas rates are effective January 11, 2016. This results in an annual revenue increase of approximately $10,824,000. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 11-01-2015

NEW PAGE(s) 16th Revision Sheet 150 18th Revision Sheet 155

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OLD PAGE(s) 15th Revision Sheet 150 17th Revision Sheet 155

These changes are to implement Purchase Gas Cost Adjustment and Demand Side Management rates effective 11/1/14. Questions should be directed to Mr. Ehrbar at 509-495-8620. CHANGES EFFECTIVE 10-01-2015 NEW PAGE(s) Second Revision Sheet 192 Original Sheet 189

OLD PAGE(s) First Revision Sheet 192

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This change reflects a increase in the Low Income Rate Assistance Program funding which was agreed to during the workshops proceeding the 2014 rate case (UG-140189) effective 10/1/15. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 1-01-2015 NEW PAGE(s) 2nd Sub. 13th Revision Sheet 101 2nd Sub. 13th Revision Sheet 111 2nd Sub. 13th Revision Sheet 112 2nd Sub. 13th Revision Sheet 121 Sub. 4th Revision Sheet 121A 2nd Sub. 13th Revision Sheet 122 Sub. 4th Revision Sheet 122A 2nd Sub. 13th Revision Sheet 131 2nd Sub. 4th Revision Sheet 131A 2nd Sub. 13th Revision Sheet 132 2nd Sub 4th Revision Sheet 132A 2nd Sub. 13th Revision Sheet 146 1st Revision Sheet 192 Sub. Original Sheet 199 Sub. Original Sheet 199A Sub. Original Sheet 199B Sub. Original Sheet 199C Sub. Original Sheet 199D Original Sheet 199E 10th Revision Sheet B

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OLD PAGE(s) 12th Revision Sheet 101 12th Revision Sheet 111 12th Revision Sheet 112 112h Revision Sheet 121 3rd Revision Sheet 121A 12th Revision Sheet 122 3rd Revision Sheet 122A 12th Revision Sheet 131 3rd Revision Sheet 131A 12th Revision Sheet 132 3rd Revision Sheet 132A 12th Revision Sheet 146 Original Sheet 192

9th Revision Sheet B

These changes are to implement WUTC Order No. 05 in Docket No. UG-140189. This is the outcome of Avista’s 2014 General Rate Case filing. In this order, the WUTC approved and adopted an all-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2015. This results in an annual revenue increase of approximately $8,500,000. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 11-01-2014

NEW PAGE(s) 15th Revision Sheet 150 17th Revision Sheet 155

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OLD PAGE(s) 14th Revision Sheet 150 16th Revision Sheet 155

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/14. Questions should be directed to Mr. Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 1-01-2014 NEW PAGE(s) 12th Revision Sheet 101 12th Revision Sheet 111 12th Revision Sheet 112 12th Revision Sheet 121 3rd Revision Sheet 121A 12th Revision Sheet 122 3rd Revision Sheet 122A 12th Revision Sheet 131 3rd Revision Sheet 131A 12th Revision Sheet 132 3rd Revision Sheet 132A 12th Revision Sheet 146 17th Revision Sheet 191

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OLD PAGE(s) 11th Revision Sheet 101 11th Revision Sheet 111 11th Revision Sheet 112 11th Revision Sheet 121 2nd Revision Sheet 121A 11th Revision Sheet 122 2nd Revision Sheet 122A 11th Revision Sheet 131 2nd Revision Sheet 131A 11th Revision Sheet 132 2nd Revision Sheet 132A 11th Revision Sheet 146 16th Revision Sheet 191

These changes are to implement WUTC Order No. 09 in Docket No. UG-120437. This is the outcome of Avista’s General Rate Case filing on April 2, 2012. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2014. This results in an annual revenue increase of approximately $1,400,000 for the period of January 1, 2014 through December 31, 2014. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 11-01-2013 NEW PAGE(s) 14th Revision Sheet 150 16th Revision Sheet 155 10th Revision Sheet 159 6th Revision Sheet 159B

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OLD PAGE(s) 13th Revision Sheet 150 15th Revision Sheet 155 9th Revision Sheet 159 Sub. 5th Revision Sheet 159B

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/13, and the Decoupling Rate Adjustment effective 11/1/13. Questions should be directed to Mr. Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 1-01-2013 NEW PAGE(s)

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10th Revision Sheet 101 10th Revision Sheet 111 10th Revision Sheet 112 10th Revision Sheet 121 10th Revision Sheet 122 10th Revision Sheet 131 10th Revision Sheet 132 10th Revision Sheet 146 12th Revision Sheet 150 16th Revision Sheet 191

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9th Revision Sheet 101 9th Revision Sheet 111 9th Revision Sheet 112 9th Revision Sheet 121 9th Revision Sheet 122 9th Revision Sheet 131 9th Revision Sheet 112 9th Revision Sheet 146 11th Revision Sheet 150 Sub. 15th Revision Sheet 191

These changes are to implement WUTC Order No. 09 in Docket No. UG-120437. This is the outcome of Avista’s General Rate Case filing on April 2, 2012. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2013. This results in an annual revenue increase of approximately $5,300,000. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 11-01-2012 NEW PAGE(s) 17th Revision Sheet 156 15th Revision Sheet 155 8th Revision Sheet 159

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OLD PAGE(s) 16th Revision Sheet 156 14th Revision Sheet 155 7th Revision Sheet 159

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/12, and the Decoupling Rate Adjustment effective 11/1/12. Questions should be directed to Mr. Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 8-01-2012 NEW PAGE(s) Sub 15th Revision Sheet 191

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OLD PAGE(s) 14th Revision Sheet 191

This change reflects a decrease in the Public Purposes Rider Schedule 191 effective 8/1/12. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 03-01-2012 NEW PAGE(s) 11 Revision Sheet 150 th

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OLD PAGE(s) 10th Revision Sheet 150

These changes are to implement a Gas Rate Adjustment decrease effective 03/01/12. Questions should be directed to Patrick Ehrbar at 509-495-8620. CHANGES EFFECTIVE 1-01-2012 NEW PAGE(s)

OLD PAGE(s)

9th Revision Sheet 101 9th Revision Sheet 111 9th Revision Sheet 112 9th Revision Sheet 121 9th Revision Sheet 122 9th Revision Sheet 131 9th Revision Sheet 132 9th Revision Sheet 146 8th Revision Sheet 159 14th Revision Sheet 191

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8th Revision Sheet 101 8th Revision Sheet 111 8th Revision Sheet 112 8th Revision Sheet 121 8th Revision Sheet 122 8th Revision Sheet 131 8th Revision Sheet 112 8th Revision Sheet 146 Rep. 7th Revision Sheet 159 Rev. 13th Revision Sheet 191

These changes are to implement WUTC Order No. 06 in Docket No. UG-110877. This is the outcome of Avista’s General Rate Case filing of May 16, 2011. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2012. This results in an annual revenue increase of approximately $3,750,000. Questions should be directed to Patrick Ehrbar at 509-495-8620. CHANGES EFFECTIVE 11-01-2011 NEW PAGE(s) 10th Revision Sheet 150 Canceling 14th Revision Sheet 155 Canceling Replacement 7th Revision Sheet 159 Canceling

OLD PAGE(s) 9th Revision Sheet 150 13th Revision Sheet 155 6th Revision Sheet 159

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/11, and the Decoupling Rate Adjustment effective 11/1/11. Questions should be directed to Mr. Ehrbar at 509-495-8620. CHANGES EFFECTIVE 7-01-2011 NEW PAGE(s) 13th Revision Sheet 191

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OLD PAGE(s) 12th Revision Sheet 191

This change reflects a decrease in the Public Purposes Rider Schedule 191 effective 7/1/11. Questions should be directed to Patrick Ehrbar at 509-495-8620. CHANGES EFFECTIVE 12-01-2010 NEW PAGE(s) 8th Revision Sheet 101 8th Revision Sheet 111 8th Revision Sheet 112 8th Revision Sheet 121 8th Revision Sheet 122 8th Revision Sheet 131 8th Revision Sheet 132 8th Revision Sheet 146 16th Revision Sheet 156 12th Revision Sheet 191

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OLD PAGE(s) 7th Revision Sheet 101 7th Revision Sheet 111 7th Revision Sheet 112 7th Revision Sheet 121 7th Revision Sheet 122 7th Revision Sheet 131 7th Revision Sheet 112 7th Revision Sheet 146 15th Revision Sheet 156 Sub. 11th Revision Sheet 191

These changes are to implement WUTC Order No. 07 in Docket No. UG-100468. This is the outcome of Avista’s General Rate Case filing of March 23, 2010. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective December 1, 2010. This results in an annual revenue increase of approximately $4,553,000. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 11-01-2010 NEW PAGE(s) 9th Revision Sheet 150 Substitute 13th Revision Sheet 155 Substitute 5th Revision Sheet 159

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OLD PAGE(s) Substitute 8th Revision Sheet 150 12th Revision Sheet 155 4th Revision Sheet 159

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/10, and the Decoupling Rate Adjustment effective 11/1/10. Questions should be directed to Mr. Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 4-01-2010 NEW PAGE(s) 11th Revision Sheet 191

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OLD PAGE(s) 10th Revision Sheet 191

This change reflects an increase in the Public Purposes Rider Schedule 191 effective 4/1/10. Questions should be directed to Patrick Ehrbar at 509-495-8620. CHANGES EFFECTIVE 1-01-2010 NEW PAGE(s) 7th Revision Sheet 101 7th Revision Sheet 111 7th Revision Sheet 112 7th Revision Sheet 121 7th Revision Sheet 122 7th Revision Sheet 131 7th Revision Sheet 132 7th Revision Sheet 146 10th Revision Sheet 191

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OLD PAGE(s) 6th Revision Sheet 101 6th Revision Sheet 111 6th Revision Sheet 112 6th Revision Sheet 121 6th Revision Sheet 122 6th Revision Sheet 131 Substitute 6th Revision Sheet 112 6th Revision Sheet 146 9th Revision Sheet 191

These changes are to implement WUTC Order No. 10 in Docket No. UG-090135. This is the outcome of Avista’s General Rate Case filing of January 23, 2009. In this order, the WUTC approved and adopted a multi-party partial settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2010. This results in an annual revenue increase of approximately $557,000. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 11-01-2009 NEW PAGE(s) Substitute 12th Revision Sheet 155 15th Revision Sheet 156 Substitute 4th Revision Sheet 159

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OLD PAGE(s) 11th Revision Sheet 155 14th Revision Sheet 156 3rd Revision Sheet 159

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/09, and the Decoupling Rate Adjustment effective 11/1/09. Questions should be directed to Mr. Ehrbar at 509-495-8620. CHANGES EFFECTIVE 06-01-2009 NEW PAGE(s) 11 Revision Sheet 155 th

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OLD PAGE(s) 10th Revision Sheet 155

These changes are to implement Gas Rate Adjustment decrease effective 06/01/09. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 02-01-2009 NEW PAGE(s) Ninth Revision Sheet 191 Third Revision Sheet 159

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OLD PAGE(s) Eighth Revision Sheet 191 Second Revision Sheet 159

This change reflects an increases in the Public Purposes Rider Schedule 191 (both Gas and Electric) effective 2/1/09. Additionally, the Natural Gas Decoupling Rate Adjustment Schedule 159 was updated to reflect changes resulting from WUTC Order No. 08 in Docket No. UG080417 . Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 01-16-2009 NEW PAGE(s) 10th Revision Sheet 155

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OLD PAGE(s) 9th Revision Sheet 155

These changes are to implement Gas Rate Adjustment decrease effective 01/16/09. Questions should be directed to Patrick Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 01-01-2009 NEW PAGE(s) Sixth Revision Sheet 101

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OLD PAGE(s) Fifth Revision Sheet 101

Sixth Revision Sheet 111 Sixth Revision Sheet 112 Sixth Revision Sheet 121 Sixth Revision Sheet 122 Sixth Revision Sheet 131 Sixth Revision Sheet 132 Sixth Revision Sheet 146 Eighth Revision Sheet 150 Eighth Revision Sheet 191

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Fifth Revision Sheet 111 Fifth Revision Sheet 112 Fifth Revision Sheet 121 Fifth Revision Sheet 122 Fifth Revision Sheet 131 Fifth Revision Sheet 132 Fifth Revision Sheet 146 Seventh Revision Sheet 150 Seventh Revision Sheet 191

These changes are to implement WUTC Order No. 08 in Docket No. UG-080417. This is the outcome of Avista’s General Rate Case filing of March 4, 2008. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2008. This results in an annual revenue increase of approximately $4,768,000. Questions should be directed to Patrick Ehrbar at 509-495-8620. CHANGES EFFECTIVE 11-01-2008 NEW PAGE(s) 2nd Revision Sheet 159 2nd Sub. Revision Sheet 159B 2nd Revision Sheet 158A 9th Revision Sheet 155 14th Revision Sheet 156

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OLD PAGE(s) 1st Substitute Revision Sheet 159 1st Revision Sheet 159B 1st Revision Sheet 158A 8th Revision Sheet 155 13th Revision Sheet 156

These changes are to implement Purchase Gas Cost Adjustment effective 11/1/08, Decoupling Rate Adjustment effective 11/1/08, Tax Rate Adjustment (Uniontown 6% tax) effective 11/1/08. Questions should be directed to Mr. Ehrbar at 509-495-8620.

CHANGES EFFECTIVE 01-01-2008 NEW PAGE(s) 5th Revision Sheet 101 Canceling Canceling 5th Revision Sheet 111 5th Revision Sheet 112 Canceling 5th Revision Sheet 121 Canceling th 5 Revision Sheet 122 Canceling 5th Revision Sheet 131 Canceling 5th Revision Sheet 132 Canceling 5th Revision Sheet 146 Canceling 13th Revision Sheet 156 Canceling Substitute Revision Sheet 159 Canceling Substitute Revision Sheet 159A Canceling Substitute Revision Sheet 159B Canceling 7th Revision Sheet 191 Canceling

OLD PAGE(s) 4th Revision Sheet 101 4th Revision Sheet 111 4th Revision Sheet 112 4th Revision Sheet 121 4th Revision Sheet 122 4th Revision Sheet 131 4th Revision Sheet 132 4th Revision Sheet 1463 12th Revision Sheet 156 Original Sheet 159 Original Sheet 159A Original Sheet 159B 6th Revision Sheet 191

These changes are to implement WUTC Order No. 05 in Docket No. UG-070805. This is the outcome of Avista’s General Rate Case filing of April 26, 2007. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2008. This results in an annual revenue increase of approximately $3,282,000. A

typical residential customer, using 70 therms of natural gas per month, will see their monthly energy bill raise approximately $1 per month. Questions should be directed to Mr. Hirschkorn at 509-495-4723.

CHANGES EFFECTIVE 11-01-2007 NEW PAGE(s) 7th Revision Sheet 150 6th Revision Sheet 150A 8th Revision Sheet 155

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OLD PAGE(s) 6th Revision Sheet 150 5th Revision Sheet 150A 7th Revision Sheet 155

The purpose of this change is to implement a Purchase Gas Cost Adjustment (PGA), effective November 1, 2007. PGA’s are normally filed annually to reflect changes in the cost of gas purchased by Avista to serve its customers. Increases, or decreases, resulting from these PGA filings directly result from the cost of gas purchased in the marketplace. Avista Utilities makes no additional profit from PGA changes. This PGA change will result in an estimated overall annual revenue decrease of approximately $12.7 million (5.8%). A residential customer using approximately 70 therms of natural gas per month will see an average monthly decrease of $5.32. The actual increase will vary based on each customer’s usage. Questions should be directed to Mr. Hirschkorn at 509-495-4723. CHANGES EFFECTIVE 11-01-2006 NEW PAGE(s) 7th Revision Sheet 155 12th Revision Sheet 156

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OLD PAGE(s) Substitute 6th Revision Sheet 155 11th Revision Sheet 156

The purpose of this change is to implement a Purchase Gas Cost Adjustment (PGA), effective November 1, 2006. PGA’s are normally filed annually to reflect changes in the cost of gas purchased by Avista to serve its customers. Increases, or decreases, resulting from these PGA filings directly result from the cost of gas purchased in the marketplace. Avista Utilities makes no additional profit from PGA changes. This PGA change will result in an estimated overall annual revenue increase of approximately $2.7 million (1.3%). A residential customer using approximately 70 therms of natural gas per month will see an average monthly increase of $1.19. The actual increase will vary based on each customer’s usage. Questions should be directed to Mr. Hirschkorn at 509-495-4723.

CHANGES EFFECTIVE 02-01-2006 NEW PAGE(s) 11 Revision Sheet 156 th

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OLD PAGE(s) Sub. 10 Revision Sheet 156 th

This change is a housekeeping matter to revise information set forth in Schedule 156 to be consistent with the natural gas rates approved by the Washington Commission for Avista in Commission Order No. 5, Docket No. UG-050483. This change does not result in any change in rates and charges to customers. Questions should be directed to Mr. Hirschkorn at 509-495-4723.

CHANGES EFFECTIVE 01-01-2006 NEW PAGE(s) 4th Revision Sheet 101 4th Revision Sheet 111 4th Revision Sheet 112 4th Revision Sheet 121 4th Revision Sheet 122 4th Revision Sheet 131 4th Revision Sheet 132 4th Revision Sheet 146 6th Revision Sheet 150

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OLD PAGE(s) 3rd Revision Sheet 101 3rd Revision Sheet 111 3rd Revision Sheet 112 3rd Revision Sheet 121 3rd Revision Sheet 122 3rd Revision Sheet 131 3rd Revision Sheet 132 3rd Revision Sheet 146 5th Revision Sheet 150

These changes are to implement WUTC Order No. 05 in Docket No. UG-050483. This is the outcome of Avista’s General Rate Case filing of March 30, 2005. In this order, the WUTC approved and adopted a multi-party settlement agreement, as filed with the Commission. The new natural gas rates are effective January 1, 2006. This results in an annual revenue increase of approximately $968,000. A typical residential customer, using 75 therms of natural gas per month, will see their monthly energy bill raise approximately $0.29 per month. Questions should be directed to Mr. Hirschkorn at 509-495-4723.

CHANGES EFFECTIVE 11-01-2005 NEW PAGE(s) Substitute 6th Revision Sheet 155 Substitute 10th Revision Sheet 156

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OLD PAGE(s) 5th Revision Sheet 155 9th Revision Sheet 156

The purpose of this change is to implement a Purchase Gas Cost Adjustment (PGA), effective November 1, 2005. A PGA is filed annually to reflect changes in the cost of gas purchased by Avista to serve its customers. This PGA reflects changes in wholesale gas and pipeline transportation costs. Increases or decreases resulting from these PGA filings directly result from the cost of gas purchased in the marketplace. Avista Utilities makes no additional profit from PGA changes. This PGA change will result in an estimated overall annual revenue increase of approximately $38.3 million (23.5%). A residential customer using approximately 70 therms of natural gas per month will see an average monthly increase of $16.39. The actual increase will vary based on each customer’s usage. Questions should be directed to Mr. Hirschkorn, at 509-495-4723.

CHANGES EFFECTIVE 08-01-2005 NEW PAGE(s) 14 Revision Sheet 158 Tax Adjusting Schedule th

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OLD PAGE(s) 13th Revision Sheet 158

The purpose of this change is to pass through an increase in the utility tax imposed on gross revenue from the sale, delivery, distribution, or furnishing of natural gas to users within the City of Colville. In accordance with Ordinance No. 1338 N.S., the tax rate is increasing from 5% to 6%. Questions should be directed to Ms. Knox at (509) 495-4325.

CHANGES EFFECTIVE 05-01-2005 OLD PAGE(s)

NEW PAGE(s) 13th Revision Sheet 158 Tax Adjusting Schedule

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12th Revision Sheet 158

The purpose of this change is to pass through an increase to the utility tax imposed on gross revenue from the sale, delivery, distribution, or furnishing of natural gas to users in the Town of Albion. In accordance with Ordinance No. 326., the tax rate is increasing from 5% to 6%. Questions should be directed to Ms. Knox at 509-495-4325.

CHANGES EFFECTIVE 02-14-2005 OLD PAGE(s)

NEW PAGE(s) 5th Revision Sheet 191

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4th Sheet 191

The change was made to reduce the low-income rate assistance portion of Schedule 191 to levels initially authorized prior to September 5th, 2003. At the time that Schedule 191 rates were increased to meet increased customer demand for energy efficiency services, the low income rate assistance surcharge had been increased equally. Revenue generated from the increased low income rate assistance surcharge has been applied to reduce the outstanding balance of the energy efficiency programs which was the intent and purpose of the original increase. Schedule 191 is designed to recover the costs incurred by the Company associated with providing energy efficiency services and low-income rate assistance to customers. The change to Schedule 191 rates through December 31, 2005 reflects a 0.79% surcharge for low-income rate assistance and a 0.96% surcharge for energy efficiency (based on the initial approvals in 2001). This is a reduction of approximately 0.6 cents per therm for residential customers. Beyond this date, the Schedule 191 energy rate will return to the level established prior to September 5th, 2003, an amount consistent with a surcharge of 0.50% for energy efficiency and 0.79% for low income rate assistance. Questions should be directed to Mr. Folsom at 509-495-8706.