3-8 



of 1976, a series of three-dimensional thermal surveys and continuous 

 releases of Rhodamine WT dye were conducted to distinguish the thermal 

 load introduced by the New Haven Harbor Station from other natural and 

 man-made thermal influences (NAI, 1977b). 



A mathematical model developed in 1971 by EBASCO was used to 

 evaluate possible discharge configurations. Physical model studies by 

 the University of Florida were used to evaluate a buoyant jet configura- 

 tion for the plant discharge (UOF, 1972). 



Limited drogue studies and current-meter measurements have 

 helped to confirm historical data on circulation patterns in the estuary 

 relative to dispersal of sewage effluents (NAI, 1975b; Goodkind & O'Day 

 and Fay, Spofford and Thorndike, 1970a and b; and Quirk, Lawler and 

 Matusky Engineers, 1969). Other data sources include hydrographic 

 surveys and a hydrodynamic mathematical model being developed for New 

 Haven sewage treatment plant siting (NAI, in preparation) . Additional 

 data have been reported in earlier Raytheon ecological studies of the 

 harbor (1970a, 1970b, 1971), Duxbury's studies of general circulation 

 patterns in the harbor (1963) , and in government doc\iments on the harbor 

 shellfish resource and water quality (FWQA, 1970) and maintenance of 

 dredging activities (U.S. Army Corps of Engineers, 1973b) . 



Various studies of UI's English Station, located in the upper 

 estuary on the Mill River about 2.6 km north of the New Haven Harbor 

 Station, have focused on turbine heat specifications (UI, 1970) , the 

 effect of heated cooling water discharges on Harbor temperatures (EBASCO, 

 1971a and b and NAI, 1971a, 1974c and 1974e) , and thermal surveys of the 

 receiving waters adjacent to the plant. 



Previous Studies - Long Island Sound 



A fairly broad data base is available for the waters of Long 

 Island Sound. A report on the water quality of Long Island Sound was 



