1-12 



From the intake structure the cooling water is pumped through 

 the condenser, heated 15 F and then discharged to New Haven Harbor 

 through a 9-ft diameter subaqueous pipeline, terminating at a point 

 approximately 700 ft offshore (Figure 1-3) . The cooling water is dis- 

 charged at a depth approximately 35 ft below mean low water level. 

 Design velocity in the pipeline and at the point of discharge is about 

 10 fps (305 cm per second) . The purpose of discharging the cooling 

 water subaqueously is to promote rapid mixing with harbor water, and 

 this results in a minimized temperature increase at the surface. 



Dvai-nacie and Sanitary Wastes 



The surface-water drainage system for the property empties 

 into New Haven Harbor. Rainwater runoff accompanied by soil, pebbles, 

 some dust and possibly leaves (natural runoff matter) is conveyed to the 

 harbor through this system. The roof drains and surface drains are 

 directed to the surface water drainage system. 



Chemical wastes including boiler blowdown from the plant are 

 collected, treated and released to a percolating lagoon where the water 

 ultimately enters the groundwater table; unconcentrated solids are 

 retained in the collection lagoons for disposal. 



No biocides are used to control fouling organisms in the 

 circulating water system; mechanical cleaning is used when necessary. 



Trash and sanitary sewage disposals are routed to the New 

 Haven city facilities. Trash collected from the traveling water screens 

 and trash racks at the circulating water intake is transported in con- 

 tainers to the city dump. Sewage is treated at the East Shore Sewage 

 Treatment Plant of the City of New Haven. 



