TABLE OF CONTENTS 



Executive Summary xi 



1.0. Introduction 1 



2.0. Project Goals and General Approach 9 



3.0. Methods 11 



3.1. Site Description 11 



3.2. Sampling Design 12 



3.2. Sample Collection Procedures 12 



3.3. Chemical analysis 15 



3.4. Bioassays 16 



3.5. Toxicity identification and evaluation procedures 20 



3.5.1. Phase 1 20 



3.5.2. Phase II 21 



3.5.3. Phase III 24 



4.0. Results 25 



4.1. Relative toxicity 25 



4.2. Toxicity Identification Evaluation - Phase 1 29 



4.2.1. 1990 29 



4.2.2. 1991 32 



4.3. Toxicity Identification Evaluation - Phase II 32 



4.4. Toxicity Identification Evaluation - Phase III 40 



4.5. Sensitivity of Recolonizing Clams 42 



5.0. Discussion. 45 



6.0. Li terature C i ted 53 



