Copies of this report are available from the followinp distributors : 



The Commonwealth of Massachusetts 



Office of the Massachusetts Secretary of State 



State Bookstore 



State House 



Room 115 



Boston, MA 02133 



National Technical Information Service (NTIS) 

 U. S. Department of Commerce 

 5285 Port Royal Road 

 Springfield, VA 22161 



The preparation of this report was financed by the Massachusetts Department 

 of Environmental Quality Engineering 



