11-5 



waters for cooling have been collecting data on the quantities and sizes 

 of imijinqod organisms. In addition to New Haven Harbor Station, impinge- 

 ment (lata arc availabJtj from the following powerplants: 



UTILITY 



PLANT 



PERIODICITY AND DURATION 



Weekly, January-December 1977 

 Biweekly or monthly, August 1975 



- August 1976 

 Biweekly or monthly, 



- August 1976 

 Biweekly or monthly, 



- August 1975 

 Biweekly or monthly, 



- August 1976 



Monthly, February - August & 

 October and December 1972 

 Monthly, January - December 1976 

 Monthly, January - December 1976 

 Daily, May 1971 - December 1977 



August 1975 

 August 1975 

 August 1975 



As described for the monitoring and baseline data, these impingement 

 data sources have been utilized to aid interpretation of occurrences 

 observed at New Haven Harbor Station. Impingement data have been util- 

 ized both in the characterization of the Harbor, where impingement was 

 considered as a type of sampling, and in the analysis of New Haven 

 Harbor Station impacts. 



METHODS 



A monthly, harbor-wide sampling program using the following 

 sampling methods was initiated in the spring and summer of 1971, and 

 continued through October 1977 (Figure 11-1) . 



