TABLE OF CONTENTS 



DISCLAIMER 1 



ACKNOWLEDGMENTS 1 



ABSTRACT 4 



1 Introduction 5 



2. Methods 6 



2.1 . Materials and Methods 6 



2.1.1 Sediment and Porewater Collection Procedures 6 



2.1 .2. Control Solutions 8 



2.2. Organisms ' 8 



2.2. 1 . Ceriodaphnia dubia 8 



2.2.2. Trimcilla truncata 9 



2.3 Toxicity Assays for Year 1 



2.3.1. Ceriodaphnia dubia Acute Toxicity Assays 



2.3.2. Ceriodaphnia dubia Survival / Reproduction Assays 



2.4. Toxicity Assays for Year 2 



2.4. 1 . Ceriodaphnia dubia Survival / Reproduction Assays 



2.4.2. Mussel Filtering Assay (MFA.) 



2.5. Statistical Analysis 



3. Results 



3.1. Year 1 18 



3.1.1. Ceriodaphnia dubia Acute Toxicity Assay 



3.1.2. Ceriodaphnia dubia Survival / Reproduction Assay 19 



3.2. Year 2 20 



3.2.1 Ceriodaphnia dubia Survival / Reproduction Assay 20 



3.2.2 Mussel Filtering Assay 21 



4. Discussion 23 



5. Conclusions 26 



6. Recommendations ' 27 



LITERATURE CITED 29 



APPENDIX A. SYLVAN SLOUGH SEDIMENT TOXICITY 



MUSSEL FILTERING ASSAY 32 



