TABLE OF CONTENTS 



Page 



LIST OF TABLES iv 



LIST OF FIGURES v 



EXECUTIVE SUMMARY viii 



1.0 INTRODUCTION 1 



2.0 DECISION PROCESS FOR THE DREDGING OF NEW HAVEN HARBOR 10 



2. 1 Physical Testing of Sediment 10 



2.2 Chemical Testing of Sediment 12 



2.2.1 Metals 12 



2.2.2 Organic Compounds 12 



2.3 Bioaccumulation/Bioassay Tests 14 



2.4 Disposal and Capping Operations 15 



2.4.1 Disposal of UDM 15 



2.4.2 Capping Operations 15 



3.0 METHODS 18 



3.1 Precision Bathymetric Surveys 18 



3.2 REMOTS® Sediment-Profile Surveys 19 



3.2.1 Baseline Survey 19 



3.2.2 Precap Survey 21 



3.3 Geotechnical Cores/Surface Grabs 21 



4.0 RESULTS 24 



4. 1 Repetitive Bathymetric Surveys 24 



4.1.1 Baseline Survey (19-20 September 1993) 24 



4. 1 .2 Interim Disposal Survey (23-25 October 1993) 24 



4.1.3 Precap Survey (2-3 November 1993) 27 



4.1.4 Interim Cap Surveys (23-24 November 1993 and 



12-13 January 1994) 32 



4.1.5 Postcap Survey (13-14 March 1994) 32 



4.2 REMOTS® Sediment-Profile Surveys 41 



4.2.1 Grain Size Distribution 41 



4.2.2 Prism Penetration Depth 41 



4.2.3 Mean Apparent Redox Potential Discontinuity (RPD) Depth 42 



4.2.4 Infaunal Successional Stage 42 



4.2.5 Organism-Sediment Indices (OSI) 45 



