TABLE OF CONTENTS 



Page 



LIST OF TABLES Hi 



LIST OF FIGURES iv 



EXECUTIVE SUMMARY v 



1.0 INTRODUCTION 1 



1 . 1 Disposal and Biological Monitoring History at MQR 1 



1.2 REMOTS® Survey, Summer 1992 1 



2.0 METHODS 5 



2.1 REMOTS® Sediment Profile Analyses 5 



2.2 Amphipod Bioassay Sediment Collection 5 



3.0 RESULTS 7 



3.1 Distribution and Ranges of REMOTS® Parameters 7 



3.1.1 Sediment Parameters 7 



3.1.2 Boundary Roughness 8 



3.1.3 Apparent Redox Potential Discontinuity 10 



3.2 Habitat Quality at MQR 10 



3.2.1 Infaunal Successional Stages 10 



3.2.2 Organism-Sediment Index 13 



3.3 General Observations 13 



3.3.1 Methane 13 



3.3.2 Low Dissolved Oxygen 16 



4.0 DISCUSSION 17 



4.1 Summary of Ecological Conditions at MQR, 1992 17 



4.2 Historical Progression of the MQR Benthic Habitat 17 



4.3 Recolonization Factors at MQR 21 



5.0 SUMMARY AND RECOMMENDATIONS 23 



6.0 REFERENCES 24 



INDEX 

 APPENDIX 



