Contents: General Introduction, EIA Methodologies Currently in Use, Backdrop for Testing the New Methodologies, INTRA A New Methodology for Selection the Most Influential Parameters for Study so as to Reduce the Costs of EIA, SMART-ALEC-A New Software Package for Studying Developmental Trends and their Environmental Impacts, CREAM A New Approach for Assessing Total Impacts and Determining Strategies for Environmentally Sustainable Developmental Planning, Summary and Conclusions.