Sites 



y 



Exposure Panel Study 



WP, Fl, EF, BP, GN 



Distribution Study 



100 m, 500 m, 1000 m 



1 km 



Fig. 1. Location of exposure panel sites in the vicinity of the Millstone Nuclear Power Station 

 (WP = White Point, FI = Fox Island, EF = FfTlucnt, BP = Black Point, GN = Giants Neck, 

 100 m = trawl-line at 100 m, 500 m = trawl-line at 500 m, 1000 m = trawl-line at 1000 m). 



Exposure Panel Study 



IVIaterials and Methods 

 Seawater Temperature 



Seawater temperature data during each expo- 

 sure period at several of the sites near MNPS 

 have been summarized. Water temperatures were 

 derived from the EDAN (Environmental Data 

 Acquisition Networic) system, which continually 

 records a variety of environmental parameters at 

 1 5-minute intervals. Ambient water temperatures 

 were recorded by sensors in Unit 1 and Unit 2 

 intake bays, and effluent water temperatures by 



sensors in the quarry cuts. Prior to 1987, tem- 

 peratures at White Point and Eox Island were 

 measured continuously with thermistors and either 

 strip or circle chart recorders. In 1987, these data 

 were collected using solid state data loggers. 



Sampling Procedure 



The present study used sets of six replicated 

 wood panels submerged at five sites: White Point 

 (WP), Eox Island (EI), Black Point (BP), Giants 

 Neck (GN), and Effluent (E,E), which was in the 

 Millstone Quarry where panels were exposed to 

 maximum discharge water temperatures (Eig. 1). 



228 



