TABLE OF CONTENTS 



Page 



LIST OF TABLES iv 



LIST OF FIGURES v 



EXECUTIVE SUMMARY vii 



1.0 INTRODUCTION 1 



2.0 METHODS 5 



2.1 Bathymetry and Navigation 5 



2.2 REMOTS® Sediment-Profile Photography 5 



2.3 Sediment Sampling and Analysis 6 



2.3.1 Grain Size Analysis 8 



2.3.2 Total Organic Carbon 8 



2.3.3 Metal and PAH Analyses 8 



2.3.4 QA/QC 8 



2.4 CTD and Dissolved Oxygen Sampling 10 



3.0 RESULTS 11 



3.1 Bathymetry 11 



3.2 REMOTS® Sediment-Profile Photography 17 



3.2.1 Grain Size Distribution 17 



3.2.2 Boundary Roughness 17 



3.2.3 Dredged Material Footprint 17 



3.2.4 Apparent RPD Depth . 23 



3.2.5 Successional Stages 30 



3.2.6 Organism-Sediment Index (OSI) 30 



3.3 Sediment Analysis 33 



3.3.1 Grain Size and Total Organic Carbon 33 



3.3.2 Metals 33 



3.3.3 PAHs 33 



3.4 CTD and Dissolved Oxygen Sampling 39 



4.0 DISCUSSION 41 



4.1 Disposal Mound Topography 41 



4.2 Recolonization Status at the New London Disposal Site 46 



4.3 New London Disposal Site Sediment Chemistry 46 



4.4 Bottom Water Dissolved Oxygen 52 



5.0 CONCLUSIONS 53 



