PETITION OF COMMUNITY NATURAL GAS CO., INC. FOR AUTHORITY TO CHANGE ITS RATES, CHARGES, TARIFFS, RULES, AND REGULATIONS; AND APPROVAL OF AN ALTERNATIVE REGULATORY PLANS PURSUANT TO INDIANA CODE 8-1-2.5-6 FOR PURPOSES OF IMPLEMENTING AN ENERGY EFFICIENCY PROGRAM, ASSOCIATED FUNDING AND DECOUPLING MECHANISMS, AND CHANGES TO PETITIONER’S CALCULATION OF COSTS FOR EXTENSION OF DISTRIBUTION MAINS |