"b. Fouling QrganlsmB . Silt, algae, and invertel)rate animals 

 ■belonging to Y phyla contributed to fouling of the panels. The latter 

 included encrusting sponges (absent at the Opeiratlng Facility), hydroids, 

 encrusting and filamentous Bryozoa, serpulid vorms, "barnacles, miscellaneous 

 nonboring mollusks, and tunicates. The hydroids at "both locations and the 

 "barnacles and encrusting Bryozoa at the Air Facility occurred with the 

 greatest frequency. The encrusting Bryozoa at the Operating Facility and 

 the f ileunentous Bryozoa at the Air Facility occurred with less frequency. 

 The occurrence of filamentous Bryozoa at the Operating Facility gmd of all 

 the other organisms, as well as the algae, was merely sporadic or occasional. 



127 



