PETITION OF INDIANA-AMERICAN WATER COMPANY, INC. FOR (1) APPROVAL OF ITS PLAN FOR PROPOSED SERVICE ENHANCEMENT IMPROVEMENTS PURSUANT TO IND. CODE CH. 8-1-31.7, (2) AUTHORITY TO TIMELY RECOVER 80% OF THE SERVICE ENHANCEMENT IMPROVEMENT COSTS THROUGH A PERIODIC RATE ADJUSTMENT MECHANISM, (3) AUTHORITY TO CREATE REGULATORY ASSETS TO RECORD (A) 20% OF THE SERVICE ENHANCEMENT IMPROVEMENT COSTS AND (B) POST-IN-SERVICE CARRYING COSTS, COMPOUNDED MONTHLY AND BASED ON THE OVERALL COST OF CAPITAL MOST RECENTLY APPROVED BY THE COMMISSION AND DEFERRED DEPRECIATION, UNTIL SUCH COSTS ARE REFLECTED IN RATES, AND (4) APPROVAL OF OTHER RELATED RATEMAKING RELIEF AND TARIFF PROPOSALS CONSISTENT WITH IND. CODE CH. 8-1-31.7, INCLUDING A NEW SERVICE ENHANCEMENT IMPROVEMENT ("SEI") RIDER