ABSTRACT
Evaluation Concepts .............................................................................................................122 Emergy Evaluation ..........................................................................................................122 Economic Valuation.........................................................................................................124
Methods ................................................................................................................................125 Lead Filtered by the Wetland ..........................................................................................125 Measurements of Wetland Status ....................................................................................125 Energy and Emergy Evaluation.......................................................................................125 Economic Analysis ..........................................................................................................126
Results...................................................................................................................................130 Lead Retained by the Swamp .........................................................................................130 Emergy Evaluation of Impacted Wetlands......................................................................130 Emergy Evaluation of Lead Smelter-Chemical Recovery System.................................132 Comparison of Treatment Systems .................................................................................134 Economic Analysis Using Money...................................................................................135
Discussion.............................................................................................................................137 Emdollar Evaluation of Wetland Lead Retention ...........................................................137 Economic Valuation of Wetland Lead Retention............................................................137 Comparison of Emergy and Economic Evaluations .......................................................138 Wetland Potential for Lead Filtration in the Nation.......................................................139 Implications for Environmental Policy ...........................................................................139
Summary and Conclusions...................................................................................................140 Acknowledgments ................................................................................................................141
