IV-475 



development of the Olympic oyster from eggs to shelled larvae. 

 Upper Penobscot Bay area had SWL concentration near 60 ppm and at 

 low tide near Fort Point the value was about 100 ppm. 



In November 1954, about five miles of shoreline and a fivefold 

 increase in the total area of flats and overlying waters were added 

 to the original Belfast Bay closure. Prior to this time, 50 

 commercial diggers had been licenced in the Belfast area alone. 



Additional closures have been made periodically since 1954. Finally, 



by July 1, 1966, the last remaining open areas were closed, making 



the closure complete from Great Spruce Mead in Northport up the 

 Penobscot River and down the east shore to Castine. 



For the total area of Penobscot Bay affected by the recent shell- 

 fish area closures, the estimated population was placed at 96,000 

 bushels of marketable soft clams, valued from a community stand- 

 point (note: this is the concept used in other case studies as the 

 expanded value. ..it is generally 2.5 to 7 times the dockside or 

 landing value) at $1,876,000 to $5,216,400. Potential harvest 

 during a second season was estimated to be 46,200 bushels. These 

 would have a value to the community of from $896,800 to 

 $2,494,800. 



DAMAGE TO SHELLFISH HABITAT 

 Great Bay, New Hampshire 



Two documents provided the information for this case study: 



