3.4.1 Sediment Grain Size and Stratigraphy 34 



3.4.2 Benthic Community Assessment 38 



3.5 New Reference Area Investigation 38 



3.5.1 Side-Scan Sonar 38 



3.5.2 REMOTS® Sediment-Profile Photography 40 



3.5.2.1 Sediment Grain Size and Stratigraphy 40 



3.5.2.2 Benthic Community Assessment 45 



3.5.3 Sediment Grab Samples 45 



3.5.3.1 Grain Size Results 45 



3.5.3.2 Geochemistry Results 48 



4.0 DISCUSSION 58 



4. 1 Dredged Material Monitoring at Mounds H and 1 58 



4.1.1 Development of Contaminant Cells 58 



4. 1 .2 Dissolved Oxygen in Western Long Island Sound 60 



4.1.3 Hypoxia and Seasonal Effects on Benthic Community 



Parameters 61 



4.1.4 Summary of Benthic Conditions at H and I Mounds 68 



4.2 New Reference Area Investigation at SE-REF 70 



5.0 CONCLUSIONS AND RECOMMENDATIONS 75 



6.0 REFERENCES 77 



APPENDICES 



