Appendix A

The Rate Adjustment for the following Rates shall be on the basis of a Rate Tracking Factor, occasioned solely by changes in the cost of gas purchased from pipeline suppliers, the cost of contractual gas storage and storage transportation, and the net cost of gas injected into and withdrawn from storage, in accordance with Order of the Public Service Commission of Indiana, approved May 14, 1986 in Cause No. 37091.

Rates Applicable Rate Tracking Factors Per Therm

• Residential Non-Space Heating $0.1370

• Residential Heating $0.2690

• Small Commercial $0.2853

• Large Commercial $0.2025

• Seasonal Commercial $0.4722

• Small Volume Industrial $0.2020

• Large Volume Industrial $0.00000

• Public Authority $0.2364

Transportation Per Therm

• Seasonal Commercial Transportation ($0.0820)

• Large Commercial Transportation $0.0159

• Public Authority Transportation $0.0552

• Small Volume Industrial Transportation $0.0105

• Large Volume Industrial Transportation $0.00000

Transportation Pooling Service Per Therm

• Large Commercial, Take-Or-Pay Surcharge $0.00000

• Public Authority, Take-Or-Pay Surcharge $0.00000

• Small Industrial, Take-Or-Pay Surcharge $0.00000

• Large Industrial, Take-Or-Pay Surcharge $0.00000

Commodity Cost Adjustment

• Public Authority Pooling Service ($0.2095) per Therm

• Small Volume Industrial Pooling Service ($0.2095) per Therm

• Large Volume Industrial Pooling Service ($0.2095) per Therm