Economic and Conservation Evaluation of Capital Renovation Projects: Maverick County Water Control and Improvement District No. 1 (Eagle Pass) ? Lining Main Canal ? Final

摘要

Initial construction costs and net annual changes in operating and maintenance expensesare identified for a capital renovation project proposed by Maverick County Water Control andImprovement District No. 1 to the Bureau of Reclamation and North American DevelopmentBank. The proposed project involves lining 3 miles of the ?Main Canal? with a urethane liningand a concrete anchor and ballast system. Both nominal and real estimates of water and energysavings and expected economic and financial costs of those savings are identified throughout theanticipated 49-year useful life for the proposed project. Sensitivity results for both the cost ofwater savings and cost of energy savings are presented for several important parameters.Annual water and energy savings forthcoming from the total project are estimated, usingamortization procedures, to be 8,084 ac-ft of water per year and 2,041,095,338 BTUs (598,211kwh) of energy per year. The calculated economic and financial cost of water savings isestimated to be $33.37 per ac-ft. The calculated economic and financial cost of energy savingsis estimated to be $0.0001322 per BTU ($0.451 per kwh).In addition, expected real (rather than nominal) values are indicated for the Bureau ofReclamation?s three principal evaluation measures specified in the United States Public Law106-576 legislation. The initial construction cost per ac-ft of water savings measure is $25.97per ac-ft of water savings. The initial construction cost per BTU (kwh) of energy savingsmeasure is $0.0001029 per BTU ($0.351 per kwh). The ratio of initial construction costs perdollar of total annual economic savings is estimated to be -13.65.