critical review of the geological and geophysical problem. The wash- 

 boring phase o£ the study could never have been accomplished without the 

 equipment and instruction from the Civil Engineering Department, University 

 of Massachusetts. Professor Karl Hendrikson contributed to the project 

 through the training and advice to the author and the field crew. 



The author is especially grateful to George E. Butler, Jr. and 

 Richard K. Callahan. In addition, John F. Kick, Stewart C. Farrell 

 and Jon C. Boothroyd gave considerable effort to the field study. 



Edward S. Moses, manager of the Parker River Wildlife Refuge, 

 obtained approval for field operations on Plum Island. Robert Hebb, 

 Department of Natural Resources, also offered his cooperation for the 

 author's use of the Plum Island State Park. The Trustees of Reserva- 

 tions, in particular Garret Van Wart and Gordon Abbot, Jr., opened the 

 Richard T. Crane, Jr. Memorial Reservation, to both seismic and drill- 

 hole phases of the study. Additional gratitude is expressed to the 

 employees of the Parker River Wildlife Refuge and the Crane Reservation 

 for their help during the project. 



Vincent J. Murphy of Weston Geophysical, Inc. and Curtis R. Tuttle 

 of the United States Geological Survey, aided greatly in the reduction 

 and interpretation of seismic data. William G. Mclntire and James M. 

 Coleman of the Coastal Studies Institute, Louisiana State University 

 helped with geological interpretations. 



At the time of publication. Colonel James L. Trayers was Director 

 of CERC; Thomdike Saville, Jr. was Technical Director. 



NOTE: Comments on this publication are invited. 



This report is published imder authority of Public Law 166, 79th 

 Congress, approved 31 July 1945, as supplemented by Public Law 172, 88th 

 Congress, approved 7 November 1963. 



I V 



