plumes were developed based on hydrographic measurements taken from 

 field surveys. A tidal circulation model was developed, not only to 

 predict current patterns and thermal distributions, but also to simulate 

 dispersal and entrainment of winter flounder fish larvae (Hess et al. 

 1975). 



As a result of these studies, the hydrographic and ecological 

 characteristics of surrounding waters are described. Studies have been 

 intensified and modified to provide the most representative data with 

 respect to the changing concerns and state-of-the-art techniques. The 

 present report provides results of 1983 studies and summarizes results 

 of previous years as a basis for evaluating any long-term impacts. The 

 report also satisfies certain license and permit conditions stipulated 

 by the Connecticut State Department of Environmental Protection and the 

 Connecticut State Power Facility Evaluation Council. 



All ecological and hydrographic studies through 1976 were conducted 

 by consulting laboratories, most notably Battelle - W. F. Clapp 

 Laboratories, Woods Hole Oceanographic Institution (Entrainment, 

 1970-1975) and Normadeau Associates (Entrainment, 1975-76). In 1977, 

 Northeast Utilities Service Company (NUSCo) began a phased, in-house 

 takeover beginning with the entrainment and impingement programs. Some 

 benthic and lobster program responsibilities were added in 1978. As of 

 January 1980, all studies (excluding heavy metals) were being conducted 

 and reported by NUSCo biologists based at the Northeast Utilities 

 Environmental Laboratory. Critical scientific review is provided by a 

 four-member. Ecological Advisory Committee (see acknowledgements) which 

 has provided continuing support since 1968. 



