Portland Harbor RI/FS: Comprehensive round 2 site ... · PORTLAND HARBOR RI/FS COMPREHENSIVE ROUND 2 SITE CHARACTERIZATION SUMMARY AND DATA GAPS ANALYSIS REPORT February 21, 2007

PORTLAND HARBOR RI/FS

COMPREHENSIVE ROUND 2 SITE CHARACTERIZATION

SUMMARY AND DATA GAPS ANALYSIS REPORT

February 21, 2007

Prepared for The Lower Willamette Group

Prepared by Integral Consulting Inc.

Windward Environmental LLC

Kennedy/Jenks Consultants

Anchor Environmental L.L.C.

IC07-0004

LWG Portland Harbor RI/FS Lower Willamette Group Comprehensive Round 2 Report

February 21, 2007

TABLE OF CONTENTS

TABLE OF CONTENTS............................................................................................................... i

LIST OF FIGURES.................................................................................................................... vii

LIST OF TABLES.................................................................................................................... xvii

LIST OF MAPS.........................................................................................................................xxv

LIST OF ACRONYMS ........................................................................................................ xxxvii

EXECUTIVE SUMMARY .....................................................................................................ES-1

1.0 INTRODUCTION......................................................................................................... 1-1

1.1 Area of Study.............................................................................................................. 1-2

1.2 Purpose of Report ....................................................................................................... 1-2

1.3 Site Background ......................................................................................................... 1-4

1.4 Report Organization ................................................................................................... 1-5

2.0 SOURCES OF ENVIRONMENTAL DATA ................................................................ 2-1

2.1 Lower Willamette Group............................................................................................ 2-1

2.1.1 Pre-AOC Sampling Activities ........................................................................... 2-1

2.1.2 Round 1 Sampling Activities............................................................................. 2-2

2.1.3 Round 2 Sampling Activities............................................................................. 2-6

2.2 Existing Historical and Concurrent Studies.............................................................. 2-16

2.2.1 Data Quality..................................................................................................... 2-16

2.2.2 Chemical Data Review Criteria....................................................................... 2-17

2.2.3 Biological Data Review Criteria ..................................................................... 2-17

2.2.4 Site Characterization and Risk Assessment (SCRA) Database....................... 2-18

2.2.5 Existing Chemical and Biological Data .......................................................... 2-19

2.3 Data Usability........................................................................................................... 2-20

2.3.1 Data Quality..................................................................................................... 2-20

2.3.2 Sediment Stability............................................................................................ 2-20

2.3.3 Data Use .......................................................................................................... 2-21

3.0 CONCEPTUAL SITE MODEL SUMMARY............................................................... 3-1

3.1 In-River Physical System Environment ..................................................................... 3-2

3.2 Ecological Functions .................................................................................................. 3-4

3.3 Potential Sources and Pathways ................................................................................. 3-5

3.4 Chemical Distribution and Potential Exposure Media ............................................... 3-7

3.4.1 Sediment ............................................................................................................ 3-7

3.4.2 Transition Zone Water ....................................................................................... 3-8

3.4.3 Surface Water..................................................................................................... 3-9

3.4.4 Tissue Samples .................................................................................................. 3-9

3.5 Fate & Transport....................................................................................................... 3-10

3.6 Receptors .................................................................................................................. 3-12

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3.6.1 Human ............................................................................................................. 3-12

3.6.2 Ecological ........................................................................................................ 3-13

SECTION 4 EXECUTIVE SUMMARY .............................................................................. ES4-i

4.0 PHYSICAL SETTING .................................................................................................. 4-1

4.1 Land Use..................................................................................................................... 4-1

4.1.1 Portland Harbor Overview ................................................................................ 4-2

4.1.2 Navigational Channel Authorization History .................................................... 4-3

4.1.3 Dredging and Capping Activities ...................................................................... 4-3

4.1.4 Stormwater Systems .......................................................................................... 4-5

4.1.5 General Land Use History ................................................................................. 4-8

4.1.6 Historical Shoreline and Fill Placement .......................................................... 4-10

4.1.7 Historical Overwater Operations..................................................................... 4-12

4.2 Hydrogeology ........................................................................................................... 4-13

4.3 Hydrology................................................................................................................. 4-13

4.3.1 Regional Datums ............................................................................................. 4-14

4.3.2 Willamette River Seasonal Stages and Flows ................................................. 4-14

4.3.3 Hydrodynamics................................................................................................ 4-15

4.4 Riverbed Characteristics and Sediment Dynamics................................................... 4-17

4.4.1 Bed Bathymetry and Time-series Change Data............................................... 4-17

4.4.2 Physical Characteristics of Sediments............................................................. 4-18

4.5 Sediment Transport Regimes.................................................................................... 4-22

4.5.1 Upstream of the Study Area............................................................................. 4-23

4.5.2 RI Study Area .................................................................................................. 4-23

4.5.3 Downstream of the Study Area........................................................................ 4-26

4.6 Habitat ...................................................................................................................... 4-26

4.6.1 Open-Water Habitat ......................................................................................... 4-27

4.6.2 Bank and Riparian Habitat .............................................................................. 4-27

4.7 Human Access and Use ............................................................................................ 4-28


5.0 IDENTIFICATION OF SOURCES .............................................................................. 5-1

5.1 Upland Sources........................................................................................................... 5-1

5.1.1 Site Summaries.................................................................................................. 5-2

5.1.2 Groundwater ...................................................................................................... 5-4

5.1.3 Direct Discharge - Stormwater and Wastewater................................................ 5-8

5.1.4 Riverbank Erosion ........................................................................................... 5-16

5.1.5 Atmospheric Deposition.................................................................................. 5-16

5.1.6 Overwater Releases ......................................................................................... 5-16

5.2 Sources Outside the Study Area ............................................................................... 5-17

5.2.1 Non-Study Area Sources in the Lower Willamette River................................ 5-17

5.2.2 Sources Above Willamette Falls (Upper Willamette River)............................ 5-18

5.3 Historical Sources..................................................................................................... 5-19

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6.0 IN-RIVER CHEMICAL DISTRIBUTION................................................................... 6-1

6.1 Indicator Chemicals in Sediment................................................................................ 6-2

6.1.1 Nature and Extent of Indicator Chemicals in Study Area Sediment ................. 6-3

6.1.2 Upstream, Downstream, and Riparian Zone Data Evaluation ........................ 6-27

6.1.3 Background Sediment Concentrations ............................................................ 6-34

6.1.4 Temporal Trends in Surface Sediment Chemical Data.................................... 6-39

6.2 Transition Zone Water and Groundwater Seeps ....................................................... 6-40

6.2.1 Groundwater Seeps.......................................................................................... 6-41

6.2.2 Transition Zone Water Analytical ResultsNature and Extent Summary ..... 6-43

6.2.3 Spatial and Temporal Nature of the TZW Data............................................... 6-52

6.3 Indicator Chemicals in Surface Water ...................................................................... 6-53

6.3.1 Non-LWG Data................................................................................................ 6-53

6.3.2 Round 2A Sample Collection Conditions........................................................ 6-54

6.3.3 Nature and Extent of Surface Water Indicator Chemicals............................... 6-55

6.3.4 Particulate-Phase COPC Concentrations......................................................... 6-65

6.4 Biota Chemical Distribution..................................................................................... 6-67

6.4.1 Indicator Chemicals......................................................................................... 6-67

6.4.2 Nature and Extent of Indicator Chemicals in Study Area Tissue .................... 6-68

6.4.3 Nature and Extent of Selected Indicator Chemicals in Tissue Collected Upriver

from the Study Area......................................................................................... 6-84

6.4.4 Nature and Extent of Selected Indicator Chemicals in Tissue Collected

Downstream from the Study Area ................................................................... 6-89


7.0 OVERVIEW AND APPROACH TO ASSESSMENT OF LOADING, FATE, AND

TRANSPORT PROCESSES ......................................................................................... 7-1

7.1 Chemical Loading to the Study Area from External Sources..................................... 7-2

7.1.1 Upstream Loading ............................................................................................. 7-3

7.1.2 Stormwater......................................................................................................... 7-9

7.1.3 Upland Groundwater Plumes .......................................................................... 7-16

7.1.4 Atmospheric Deposition.................................................................................. 7-20

7.1.5 Permitted Wastewater Discharge..................................................................... 7-23

7.1.6 Upland Soil and Riverbank Erosion ................................................................ 7-24

7.2 Fate and Transport Processes within the Study Area................................................ 7-28

7.2.1 Sediment and Porewater Fate and Transport Processes .................................. 7-29

7.2.2 Surface Water Fate and Transport Processes ................................................... 7-41

7.2.3 Biological Fate and Transport Processes......................................................... 7-43

7.3 River-Wide Fate and Transport Model ..................................................................... 7-51

7.3.1 Modeling Objectives ....................................................................................... 7-52

7.3.2 Hybrid Model Components ............................................................................. 7-53

7.3.3 Path Forward ................................................................................................... 7-54

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8.0 ROUND 2 HUMAN HEALTH RISK ASSESSMENT SUMMARY ........................... 8-1

8.1 Data Evaluation .......................................................................................................... 8-1

8.2 Exposure Assessment ................................................................................................. 8-2

8.3 Toxicity Assessment ................................................................................................... 8-3

8.4 Risk Characterization and Uncertainty Analysis ........................................................ 8-4

8.4.1 Risk Characterization Results............................................................................ 8-4

8.4.2 Uncertainty Analysis ......................................................................................... 8-7

8.4.3 Data Needs Evaluation ...................................................................................... 8-8

8.5 Screening of Surface Water and Transition Zone Water Data .................................... 8-9

8.5.1 Screening of Surface Water Data....................................................................... 8-9

8.5.2 Screening of Transition Zone Water Data ....................................................... 8-10

8.5.3 Screening Evaluation Conclusions .................................................................. 8-11

8.6 Summary and Conclusions ....................................................................................... 8-11


9.0 ROUND 2 ECOLOGICAL RISK ASSESSMENT SUMMARY.................................. 9-1

9.1 ERA Data Set.............................................................................................................. 9-2

9.2 Selected Receptors and Risk Assessment Approach .................................................. 9-3

9.2.1 Benthic Invertebrates......................................................................................... 9-3

9.2.2 Fish .................................................................................................................... 9-5

9.2.3 Wildlife .............................................................................................................. 9-5

9.2.4 Amphibians and Reptiles................................................................................... 9-6

9.2.5 Aquatic Plants.................................................................................................... 9-6

9.3 Results of Round 2 COPC Screening Assessment ..................................................... 9-7

9.4 Results of Round 2 ERA and Identification of iCOCs ............................................... 9-8

9.4.1 Benthic Invertebrates......................................................................................... 9-8

9.4.2 Fish .................................................................................................................. 9-10

9.4.3 Wildlife ............................................................................................................ 9-11

9.4.4 Amphibians and Reptiles................................................................................. 9-12

9.4.5 Aquatic plants .................................................................................................. 9-12

9.5 ERA Data Needs and Future Analyses ..................................................................... 9-13

SECTION 10 EXECUTIVE SUMMARY .......................................................................... ES10-i

10.0 PRELIMINARY IDENTIFICATION OF iAOPCs ..................................................... 10-1

10.1 Approach and Methods.......................................................................................... 10-2

10.1.1 General Approach............................................................................................ 10-2

10.1.2 Human-Health-Specific Methods.................................................................. 10-11

10.1.3 Ecological-Specific Methods......................................................................... 10-20

10.1.4 Compilation of iAOPCs ................................................................................ 10-26

10.2 Background Information ..................................................................................... 10-26

10.2.1 Source and Derivation of Background Values............................................... 10-27

10.2.2 Use of Background Values in AOPC Development ...................................... 10-27

10.2.3 Background and RI/FS .................................................................................. 10-28

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10.3 Summary of iPRGs.............................................................................................. 10-29

10.4 Summary of Potential Risk Areas........................................................................ 10-29

10.4.1 Human Health Risk ....................................................................................... 10-30

10.4.2 Ecological Risk.............................................................................................. 10-31

10.5 Overall iAOPCs................................................................................................... 10-31

10.5.1 Overall iAOPC Methods ............................................................................... 10-31

10.5.2 Overall iAOPC Results.................................................................................. 10-34

10.5.3 Spatial Evaluation of TZW Screening Exceedances ..................................... 10-35

SECTION 11 EXECUTIVE SUMMARY ...........................................................................ES11-i

11.0 CONCEPTUAL SITE MODEL .................................................................................. 11-1

11.1 Conceptual Site Model Overview for the Entire Study Area ................................ 11-2

11.1.1 iCOCs and Potential iCOCs ............................................................................ 11-2

11.1.2 Loading, Fate, and Transport Processes .......................................................... 11-4

11.1.3 Loading, Fate, and Transport of iCOCs and Potential iCOCs....................... 11-10

11.2 Site-Wide iAOPC ................................................................................................ 11-43

11.2.1 Physical Setting, Infrastructure, and Operational History............................. 11-43

11.2.2 Chemical Distribution of PCBs in the Site-wide iAOPC.............................. 11-44

11.2.3 Potential Sources of iCOCs ........................................................................... 11-49

11.2.4 Relationship of Upland Sources to the Distribution of iCOCs...................... 11-54

11.3 CSM for iAOCs................................................................................................... 11-55

11.3.1 CSM for iAOPC 1 ...................................................................................... 11-56

11.3.2 CSM for iAOPC 2 ...................................................................................... 11-72

11.3.3 CSM for iAOPCs 3, 4, 5............................................................................. 11-78

11.3.4 CSM for iAOPC T4.................................................................................... 11-94

11.3.5 CSM for iAOPC 6 .................................................................................... 11-104

11.3.6 CSM for iAOPC 7 .................................................................................... 11-114

11.3.7 CSM for iAOPCs 8 and 9......................................................................... 11-124

11.3.8 CSM for iAOPC 10 .................................................................................. 11-134

11.3.9 CSM for iAOPC 11 .................................................................................. 11-147

11.3.10 CSM for iAOPCs 12 and 13..................................................................... 11-165

11.3.11 CSM for iAOPC 14 .................................................................................. 11-178

11.3.12 CSM for iAOPCs 15 and 16..................................................................... 11-205

11.3.13 CSM for iAOPC 17 .................................................................................. 11-217

11.3.14 CSM for iAOPC 18 .................................................................................. 11-230

11.3.15 CSM for iAOPC 19 .................................................................................. 11-240

11.3.16 CSM for iAOPCs 20, 21, 22, and 23........................................................ 11-260

11.3.17 CSM for iAOPC 24 .................................................................................. 11-279

11.3.18 CSM for iAOPC 25 .................................................................................. 11-286

11.3.19 CSM for iAOPC 26 .................................................................................. 11-290

11.3.20 CSM for iAOPC 27 .................................................................................. 11-298

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SECTION 12 EXECUTIVE SUMMARY .......................................................................... ES12-i

12.0 DATA GAPS AND ADDITIONAL DATA NEEDS.................................................... 12-1

12.1 Summary of Findings of the Round 2 Report ....................................................... 12-2

12.1.1 Nature & Extent............................................................................................... 12-2

12.1.2 Human Health Risk ......................................................................................... 12-3

12.1.3 Ecological Risk................................................................................................ 12-3

12.1.4 Initial Areas of Potential Concern ................................................................... 12-3

12.1.5 Key Findings from Round 2 Report ................................................................ 12-4

12.2 Site-wide Data Needs ............................................................................................ 12-4

12.2.1 Nature and Extent ............................................................................................ 12-4

12.2.2 Upstream Contribution and Naturally Occurring Background

Concentrations................................................................................................. 12-6

12.2.3 Human Health Risk ......................................................................................... 12-8

12.2.4 Ecological Risk................................................................................................ 12-9

12.2.5 Fate and Transport Data Needs...................................................................... 12-11

12.2.6 FS Data Needs ............................................................................................... 12-12

12.2.7 Site-Wide iAOPC .......................................................................................... 12-15

12.3 Area-specific Data Needs .................................................................................... 12-17

12.3.1 Data Needs for Areas that Are Not iAOPCs.................................................. 12-17

12.3.2 TZW .............................................................................................................. 12-19

12.3.3 FS Data Needs for iAOPCs ........................................................................... 12-20

13.0 NEXT STEPS.............................................................................................................. 13-1

14.0 REFERENCES............................................................................................................ 14-1

15.0 GLOSSARY OF TERMS............................................................................................ 15-1

Appendix A. Data Sources and Site Characterization/Risk Assessment Database Appendix B. Identification of Sources Appendix C. Nature and Extent Appendix D. Loading, Fate and Transport Appendix E. Food Web Model and Biota-Sediment Accumulation Factor (BSAF)

Development Appendix F. Round 2 Human Health Risk Assessment Appendix G. Round 2 Ecological Risk Assessment Appendix H. Derivation of Initial Areas of Potential Concern Appendix I. iAOPC CSM Data Tables Appendix J. Upland CSM Site Summary Table

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LIST OF FIGURES

Figure 3.0-1. Human Health Conceptual Site Model Figure 3.0-2. Ecological Health Conceptual Site Model Figure 4.1-1. LWR Stormwater Basin, River Miles 2 to 11 Figure 4.3-1. Willamette River Stage Data, October 1972- June 2006 Figure 4.3-2. Daily Mean Willamette River Discharge, October 1, 1972 through June 30,

2006 Figure 4.3-3. Average Mean Daily Discharge Values for the Water Years 1973 to 2005 Figure 4.3-4. Frequency of Daily Mean Discharge Values, October 1, 1973-June 30,

2006 Figure 4.3-5a. Water Year 2001 Willamette River Stage Data versus Average Annual

Values (October 1972-June 2006) Figure 4.3-5b. Water Year 2002 Willamette River Stage Data versus Average Annual

Values (October 1972-June 2006) Figure 4.3-5c. Water Year 2003 Willamette River Stage Data versus Average Annual

Values (October 1972-June 2006) Figure 4.3-5d. Water Year 2004 Willamette River Stage Data versus Average Annual

Values (October 1972-June 2006) Figure 4.3-5e. Water Year 2005 Willamette River Stage Data versus Average Annual

Values (October 1972-June 2006) Figure 4.3-5f. Water Year 2006 Willamette River Stage Data versus Average Annual

Values (October 1972-June 2006) Figure 4.3-6a. Water Year 2001 Willamette River Daily Mean Discharge versus

Averaged Daily Discharge (October 1972-June 2006) Figure 4.3-6b. Water Year 2002 Willamette River Daily Mean Discharge versus

Averaged Daily Discharge (October 1972-June 2006) Figure 4.3-6c. Water Year 2003 Willamette River Daily Mean Discharge versus

Averaged Daily Discharge (October 1972-June 2006) Figure 4.3-6d. Water Year 2004 Willamette River Daily Mean Discharge versus

Averaged Daily Discharge (October 1972-June 2006) Figure 4.3-6e. Water Year 2005 Willamette River Daily Mean Discharge versus

Averaged Daily Discharge (October 1972-June 2006) Figure 4.3-6f. Water Year 2006 Willamette River Daily Mean Discharge versus

Averaged Daily Discharge (October 1972-June 2006) Figure 4.3-7a. Velocity Vector Plot, High Flow, Mid Flood, RM 2-5 Figure 4.3-7b. Velocity Vector Plot, High Flow, Mid Flood, RM 5-9 Figure 4.3-7c. Velocity Vector Plot, High Flow, Mid Flood, RM 8-11.8 Figure 4.3-8a. Velocity Vector Plot, High Flow, Mid Ebb, RM 2-5 Figure 4.3-8b. Velocity Vector Plot, High Flow, Mid Ebb, RM 5-9 Figure 4.3-8c. Velocity Vector Plot, High Flow, Mid Ebb, RM 8-11.8

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Figure 4.3-9a. Velocity Vector Plot, Low Flow, Mid Flood, RM 2-5 Figure 4.3-9b. Velocity Vector Plot, Low Flow, Mid Flood, RM 5-9 Figure 4.3-9c. Velocity Vector Plot, Low Flow, Mid Flood, RM 8-11.8 Figure 4.3-10a. Velocity Vector Plot, Low Flow, Mid Ebb, RM 2-5 Figure 4.3-10b. Velocity Vector Plot, Low Flow, Mid Ebb, RM 5-9 Figure 4.3-10c. Velocity Vector Plot, Low Flow, Mid Ebb, RM 8-11.8 Figure 4.4-1. Upstream TSS Concentrations and Study Period Flow Rates Figure 4.4-2. LISST Suspended Particle Size Measurements with Depth Figure 4.4-3a. City of Portland TSS Data and Daily Mean Discharge WaterYear 2001 Figure 4.4-3b. City of Portland TSS Data and Daily Mean Discharge WaterYear 2002 Figure 4.4-3c. City of Portland TSS Data and Daily Mean Discharge WaterYear 2003 Figure 4.4-3d. City of Portland TSS Data and Daily Mean Discharge WaterYear 2004 Figure 4.4-3e. City of Portland TSS Data and Daily Mean Discharge WaterYear 2005 Figure 4.4-3f. City of Portland TSS Data and Daily Mean Discharge WaterYear 2006 Figure 6.1-1. Schematic Willamette Riverbank Cross Section (River Mile 2 to 11) Figure 6.1-2. Scatter Plot of Arsenic Concentrations (mg/kg) in Surface Sediment, RM

2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-3. Scatter Plot of Arsenic Concentrations (mg/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-4. Scatter Plot of Mercury Concentrations (mg/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-5. Scatter Plot of Mercury Concentrations (mg/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-6. Scatter Plot of Zinc Concentrations (mg/kg) in Surface Sediment, RM 211, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-7. Scatter Plot of Zinc Concentrations (mg/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-8. Scatter Plot of Tributyltin Ion Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-9. Scatter Plot of Tributyltin Ion Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

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Figure 6.1-10. Scatter Plot of Total PCB Aroclors Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-11. Scatter Plot of Total PCB Aroclors Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-12. Scatter Plot of Total PCB Congeners Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-13. Scatter Plot of Total PCB Congeners Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-14. Scatter Plot of Dioxin/Furan TEQ Concentrations (pg/g) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-15. Scatter Plot of Dioxin/Furan TEQ Concentrations (pg/g) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-16. Scatter Plot of Dioxin-like PCB congener TEQ Concentrations (pg/g) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-17. Scatter Plot of Dioxin-like PCB congener TEQ Concentrations (pg/g) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-18. Scatter Plot of Total of 2,4 and 4,4-DDx Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-19. Scatter Plot of Total of 2,4 and 4,4-DDx Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-20. Scatter Plot of Total of 2,4 and 4,4-DDD Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-21. Scatter Plot of Total of 2,4 and 4,4-DDD Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-22. Scatter Plot of Total of 2,4 and 4,4-DDE Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-23. Scatter Plot of Total of 2,4 and 4,4-DDE Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

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Figure 6.1-24. Scatter Plot of Total of 2,4 and 4,4-DDT Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-25. Scatter Plot of Total of 2,4 and 4,4-DDT Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-26. Scatter Plot of Aldrin Concentrations (g/kg) in Surface Sediment, RM 211, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-27. Scatter Plot of Aldrin Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-28. Scatter Plot of Beta-Hexachlorocyclohexane Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-29. Scatter Plot of Beta-Hexachlorocyclohexane Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-30. Scatter Plot of Total Chlordanes Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-31. Scatter Plot of Total Chlordanes Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-32. Scatter Plot of Total Polycyclic Aromatic Hydrocarbons Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-33. Scatter Plot of Total Polycyclic Aromatic Hydrocarbons Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-34. Scatter Plot of High Molecular Weight PAH Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-35. Scatter Plot of High Molecular Weight PAH Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-36. Scatter Plot of Phenanthrene Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-37. Scatter Plot of Phenanthrene Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

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February 21, 2007

Figure 6.1-38. Scatter Plot of Benzo(a)anthracene Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-39. Scatter Plot of Benzo(a)anthracene Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-40. Scatter Plot of Benzo(a)pyrene Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-41. Scatter Plot of Benzo(a)pyrene Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-42. Scatter Plot of Bis(2-ethylhexyl)phthalate Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-43. Scatter Plot of Bis(2-ethylhexyl)phthalate Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-44. Scatter Plot of Hexachlorobenzene Concentrations (g/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-45. Scatter Plot of Hexachlorobenzene Concentrations (g/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-46. Scatter Plot of Total Petroleum Hydrocarbons Concentrations (mg/kg) in Surface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-47. Scatter Plot of Total Petroleum Hydrocarbons Concentrations (mg/kg) in Subsurface Sediment, RM 2-11, Eastern Nearshore (top plot), Navigation Channel (center plot), and Western Nearshore (bottom plot)

Figure 6.1-48. Plots of Detected Total PCB Aroclor and Congener Concentrations in Surface and Subsurface Sediment

Figure 6.1-49. Homolog Composition of Aroclors Reported in Sediment. Figure 6.1-50. Analyte Concentrations by River Mile for Upstream/Downstream Subareas Figure 6.1-51. Summary Matrix of Statistical Test Results reported in Table 6.1-14 Figure 6.1-52. Comparison of Means +/- 95% Confidence Limits by Subareas Figure 6.1-53. Scatterplots of Surface Sediment Data for Selected Chemicals in the

Upriver Reach Figure 6.1-54. Concentration Differences in Collocated Samples Versus Time between

Samples Figure 6.2-1. Upland Seep Locations

xi


February 21, 2007

Figure 6.2-2. Rhone Poulenc Nearshore Upland Groundwater, Upland Seep, and TZW - Select Analytes

Figure 6.2-3a. Transition Zone Water; Kinder Morgan Linnton PAH Concentration Graph

Figure 6.2-3b. Transition Zone Water; ARCO PAH Concentration Graph Figure 6.2-3c. Transition Zone Water; ExxonMobil PAH Concentration Graph Figure 6.2-3d. Transition Zone Water; Gasco PAH Concentration Graph Figure 6.2-3e. Transition Zone Water; Siltronic PAH Concentration Graph Figure 6.2-3f. Transition Zone Water; Willbridge PAH Concentration Graph Figure 6.2-4a. Transition Zone Water; Filtered Trident and Peeper Al and As

Concentration Graphs Figure 6.2-4b. Transition Zone Water; Filtered Trident and Peeper Ba and Cd

Concentration Graphs Figure 6.2-4c. Transition Zone Water; Filtered Trident and Peeper Pb and Mn

Concentration Graphs Figure 6.2-4d. Transition Zone Water, Filtered Trident and Peeper Hg Concentration

Graphs Figure 6.2-5a. Transition Zone Water Sample Results; River Mile 6 to 7 - Total BTEX

Concentrations (g/L); (Detail to Map 6.2-8c) Figure 6.2-5b. Transition Zone Water Sample Results; River Mile 6 to 7 - Total BTEX

Pie Charts (g/L); (Detail to Map 6.2-8c) Figure 6.2-6a. Transition Zone Water; Kinder Morgan Linnton Aliphatic CVOC

Concentration Graph Figure 6.2-6b. Transition Zone Water; ARCO Aliphatic CVOC Concentration Graph. Figure 6.2-6c. Transition Zone Water; ExxonMobil Aliphatic CVOC Concentration

Graph Figure 6.2-6d. Transition Zone Water; Former Arkema Acid Plant Aliphatic CVOC

Concentration Graph Figure 6.2-6e. Transition Zone Water; Former Arkema Chlorate Plant Aliphatic CVOC

Concentration Graph Figure 6.2-6f. Transition Zone Water; Rhone Poulenc Aliphatic CVOC Concentration

Graph Figure 6.2-6g. Transition Zone Water; Gasco Aliphatic CVOC Concentration Graph Figure 6.2-6h. Transition Zone Water; Siltronic Aliphatic CVOC Concentration Graph Figure 6.2-6i. Transition Zone Water; Willbridge Aliphatic CVOC Concentration Graph Figure 6.2-6j. Transition Zone Water; Gunderson Aliphatic CVOC Concentration Graph Figure 6.2-7. Transition Zone Water Sample Results; River Mile 7 to 8 - Perchlorate

(g/L) Figure 6.2-8. Transition Zone Water Sample Results; River Mile 6 to 7 - Cyanide

(mg/L)

xii


February 21, 2007

Figure 6.3-1. Comparison of Historical Discharge USGS Station 14211720 Willamette River at Portland

Figure 6.3-2. November 2004 Surface Water Sampling Event Hydrograph and Hyetograph USGS 14211720 Willamette River at Portland

Figure 6.3-3. March 2005 Surface Water Sampling Event Hydrograph and Hyetograph USGS 14211720 Willamette River at Portland

Figure 6.3-4. July 2005 Surface Water Sampling Event Hydrograph and Hyetograph USGS 14211720 Willamette River at Portland

Figure 6.3-5. Comparison of TSS in Round 2A Surface Water Samples Figure 6.3-6. City of Portland 1992-2006 Willamette River TSS & Precipitation Figure 6.3-7. City of Portland November '04 - July '05 Willamette River TSS &

Precipitation Figure 6.3-8. Round 2A Surface Water Concentrations - Total PCB Congener

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-9. Round 2A Surface Water Concentrations - Total PCB Congener TEQ

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-10. Round 2A Surface Water Concentrations - Total PCDD/F Concentrations

in XAD Columns and 0.5-m Filters Figure 6.3-11. Round 2A Surface Water Concentrations - 2,3,7,8-TCDD TEQ

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-12. Round 2A Surface Water Concentrations - Total of 2,4' and 4,4'-DDD

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-13. Round 2A Surface Water Concentrations - Total of 2,4' and 4,4'-DDE

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-14. Round 2A Surface Water Concentrations - Total of 2,4' and 4,4'-DDT

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-15. Round 2A Surface Water Concentrations - Total of 2,4' and 4,4'-DDD,

DDE, -DDT Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-16. Round 2A Surface Water Concentrations - Aldrin Concentrations in XAD

Columns and 0.5-m Filters Figure 6.3-17. Round 2A Surface Water Concentrations - beta-Hexachlorocyclohexane

Concentrations in XAD Columns and 0.5-m Filters Figure 6.3-18. Round 2A Surface Water Concentrations - Total Chlordane Concentrations

in XAD Columns and 0.5-m Filters Figure 6.3-19. Round 2A Surface Water Concentrations - Benzo(a)pyrene Concentrations

in XAD Columns and 0.5-m Filters Figure 6.3-20. Round 2A Surface Water Concentrations - Total PAH Concentrations in

XAD Columns and 0.5-m Filters Figure 6.3-21. Round 2A Surface Water Concentrations - Total PAH Concentrations in

Peristaltic Pump Samples Figure 6.3-22. PAH Composition in High-Volume Surface Water Samples Figure 6.3-23. PAH Composition Surface Water Samples Collected by Peristaltic Pump

xiii


February 21, 2007

Figure 6.3-24. Round 2A Surface Water Concentrations - LPAH Concentrations in XAD Columns and 0.5-m Filters

Figure 6.3-25. Round 2A Surface Water Concentrations - HPAH Concentrations in XAD Columns and 0.5-m Filters

Figure 6.3-26. PAH Composition in XAD Columns and 0.5-m Filters in July 2005 Surface Water Samples

Figure 6.3-27. Round 2A Surface Water Concentrations - Hexachlorobenzene Concentrations in XAD Columns and 0.5-m Filters

Figure 6.3-28. Round 2A Surface Water Concentrations - Total and Dissolved Arsenic Concentrations

Figure 6.3-29. Round 2A Surface Water Concentrations - Total and Dissolved Lead Concentrations

Figure 9.0-1. Process for Identification of Ecological iCOCs Figure 10.1-1. Example of Hill-Topping Procedure for iAOPC Development Based on

Site-Wide Scale iPRG Figure 11.0-1. Physical Conceptual Site Model Figure 11.1-1. Surface Water Loading by River Mile, Tributyltin and Dioxin TEQ Figure 11.1-2. Comparison of Estimated Loading Rates to the Water Column, Total

Dioxin TEQ Figure 11.1-3. Surface Water Loading by River Mile, PCBs Figure 11.1-4. Comparison of Estimated Loading Rates to the Water Column, PCB TEQ

and PCB Aroclors Figure 11.1-5a. Surface Water Loading by River Mile, DDx Pesticides Figure 11.1-5b. Surface Water Loading by River Mile, non-DDx Pesticides,

Hexachlorocyclohexanes Figure 11.1-5c. Surface Water Loading by River Mile, non-DDx Pesticides Figure 11.1-6a. Comparison of Estimated Loading Rates to the Water Column, DDx

Pesticides Figure 11.1-6b. Comparison of Estimated Loading Rates to the Water Column, non-DDx

Pesticides Figure 11.1-7a. Surface Water Loading by River Mile, LPAHs Figure 11.1-7b. Surface Water Loading by River Mile, HPAHs Figure 11.1-8a. Comparison of Estimated Loading Rates to the Water Column, Total PAH

and LPAHs Figure 11.1-8b. Comparison of Estimated Loading Rates to the Water Column, HPAHs. Figure 11.1-9. Surface Water Loading by River Mile, Phthalate Esters Figure 11.1-10. Comparison of Estimated Loading Rates to the Water Column, Phthalate

Esters Figure 11.1-11. Surface Water Loading by River Mile, SVOCs Figure 11.1-12. Comparison of Estimated Loading Rates to the Water Column, SVOCs Figure 11.1-13. Surface Water Loading by River Mile, Metals

xiv


February 21, 2007

Figure 11.1-14. Comparison of Estimated Loading Rates to the Water Column, Metals. Figure 11.2-1. Preliminary Conceptual Site Model Diagram for the Site-Wide iAOPC Figure 11.3.1-1. Cross Section A-A Oregon Steel Mills Figure 11.3.1-2. Preliminary Conceptual Site Model Diagram for iAOPC 1 Figure 11.3.2-1. Preliminary Conceptual Site Model Diagram for iAOPC 2 Figure 11.3.3-1. Preliminary Conceptual Site Model Diagram for iAOPCs 3, 4, and 5 Figure 11.3.4-1. Preliminary Conceptual Site Model for iAOPC T4 Figure 11.3.5-1. Preliminary Conceptual Site Model Diagram for iAOPC 6 Figure 11.3.6-1. Hydrogeologic Cross Section Mar Com Figure 11.3.6-2. Preliminary Conceptual Site Model Diagram for iAOPC 7 Figure 11.3.7-1. Preliminary Conceptual Site Model Diagram for iAOPCs 8 and 9 Figure 11.3.8-1. Preliminary Conceptual Site Model Diagram for iAOPC 10 Figure 11.3.9-1a. Gasco Geologic Cross-section B-B Figure 11.3.9-1b. Siltronic Geologic Cross-section A-A Figure 11.3.9-2. Preliminary Conceptual Site Model Diagram for iAOPC 11 Figure 11.3.10.1. Preliminary Conceptual Site Model Diagram for iAOPCs 12 and13 Figure 11.3.11-1. Preliminary Conceptual Site Model Diagram for iAOPC 14 Figure 11.3.12-1a. Preliminary Conceptual Site Model Diagram for iAOPC 15 Figure 11.3.12-1b. Preliminary Conceptual Site Model Diagram for iAOPC 16 Figure 11.3.13-1. Preliminary Conceptual Site Model Diagram for iAOPC 17 Figure 11.3.14-1. Preliminary Conceptual Site Model Diagram for iAOPC 18 Figure 11.3.15-1a d. Cross Sections Gunderson Figure 11.3.15-2. Preliminary Conceptual Site Model Diagram for iAOPC 19 Figure 11.3.16-1a. Cascade General Geologic Cross Section A-A Figure 11.3.16-1b. Cascade General Geologic Cross Section B-B Figure 11.3.16-1c. Cascade General Geologic Cross Section C-C Figure 11.3.16-2a. Freightliner TMP2 Geologic Cross Section A-A Figure 11.3.16-2b. Freightliner TMP2 Geologic Cross Section B-B Figure 11.3.16-3a. Freightliner TMP Generalized Geologic Cross Section Locations Figure 11.3.16-3b. Freightliner TMP Generalized Geologic Cross Section A-A Figure 11.3.16-3c. Freightliner TMP Generalized Geologic Cross Section B-B Figure 11.3.16-3d. Freightliner Generalized Geologic Cross Section C-C Figure 11.3.16-4. Preliminary Conceptual Site Model Diagram for iAOPCs 20, 21, 22, and 23 Figure 11.3.17-1. Preliminary Conceptual Site Model Diagram for iAOPC 24 Figure 11.3.18-1. Preliminary Conceptual Site Model Diagram for iAOPC 25 Figure 11.3.19-1. Preliminary Conceptual Site Model Diagram for iAOPC 26 Figure 11.3.20-1. Preliminary Conceptual Site Model Diagram for iAOPC 27

xv


February 21, 2007

SUPPLEMENTAL FIGURES

Figure 8. General Geologic Cross Section A-A (Section 11.3.4) Figure 9. General Geologic Cross Section B-B (Section 11.3.4) Figure 10. General Geologic Cross Section C-C (Section 11.3.4) Figure 2. Cross Section Arco Terminal Arco site summary (Section 11.3.5) Figure 35. From SECOR (Section 11.3.5) Figure 3. Upland Groundwater -Arco-site-summary (Section 11.3.5) Figure 8-7. Siltronic Interpreted Groundwater Discharge Areas Flow Zones

(Section 11.3.9) Figure 7-7. Gasco Interpreted Groundwater Discharge Areas Flow Zones

(Section 11.3.9) Figure 15. Tar and Oil Observations in Soil Former Effluent Discharge/Tar Pond

Areas (Section 11.3.9) Figure 2. McCormick and Baxter Hydrogeologic Cross Sections (Section 11.3.12) Figure 4-4. Triangle Park Cross Section C-C (Section 11.3.12) Figure 4-5. Triangle Park Cross Sections D-D and E-E (Section 11.3.12) Figure 5-2a. Willbridge Geological Cross Section (Section 11.3.13) Figure 11-7. Willbridge Interpreted Groundwater Discharge Areas Flow Zones

(Section 11.3.13) Fig ANZ 2002-4190. Port of Portland 2002 (Section 11.3.16)

xvi

LWG Lower Willamette Group

Table 2.0-1.

Table 2.1-1. Table 2.1-2.


Table 2.1-5. Table 2.1-6. Table 2.1-7.

Table 2.2-1.

Table 4.1-1. Table 4.1-2. Table 4.1-3. Table 4.1-4. Table 4.4-1.

Table 4.4-2. Table 4.4-3. Table 4.5-1. Table 5.1-1. Table 5.1-2. Table 5.1-3. Table 5.1-4. Table 5.1-5. Table 5.2-1.

Table 5.2-2.


Table 6.1-1.

Portland Harbor RI/FS Comprehensive Round 2 Report

February 21, 2007

LIST OF TABLES

Summary of Non-LWG Investigations Included in the Comprehensive Round 2 Data Set Summary of LWG and Non-LWG Nature and Extent Sample Counts Summary of LWG Rounds 1 and 2 and Non-LWG Sediment Sample Counts Summary of LWG Rounds 1 and 2 and Non-LWG Biota Sample Counts Number of Individual Fish or Invertebrates per Sample during LWG Rounds 1 and 2 and Non-LWG Studies Summary of LWG Round 2 Transition Zone Water Sample Counts Summary of LWG Round 2 Surface Water Sample Counts Summary of all Category 1 and Category 2 Data in LWG and Existing Database Upland Soil Data Available for the Riparian Zone and Summary of DEQ Questionnaire Results, Portland Harbor RI/FS Property Name Index (RM 2-11) LWR Dredging Projects in and Adjacent to the Study Area (1997-2006) Summary of Basin Land Use Characteristics Historical Overwater Features and Fill Placement Summary of TSS samples collected by the LWG, November 2005-April 2006 Upstream Samples TSS and TOC results, November 2005-April 2006 LWR Samples TSS and TOC results, April 2006 Summary of Sediment Transport Characteristics, RM 0-26 Site Summary Status Upland Site Pathway Assessment Summary Stormwater Basin Characteristics and Potential Sources Active NPDES Permitted Discharges to the Portland Harbor Study Area Overwater Releases Shoreline or Nearshore Facilities Upstream of RM 11 that are Listed in DEQ's ESCI Database Active NPDES Permitted Discharges to the LWR, Outside the Study Area Summary of Willamette River Subbasin TMDLs Matrix of COIs in All Media COPCs and iCOCs Identified Based on Ecological and/or Human Health Risk Evaluations, and Analytes Selected as Indicator Chemicals for Nature and Extent Discussions Summary Statistics for Grainsize, TOC, and Indicator Chemicals Results in Surface Sediment, Study Area (RM 2-11)

xvii


Table 6.1-2.

Table 6.1-3a.

Table 6.1-3b.

Table 6.1-3c.

Table 6.1-4a.

Table 6.1-4b.

Table 6.1-5.

Table 6.1-6.

Table 6.1-7.

Table 6.1-8.

Table 6.1-9.

Table 6.1-10.


Table 6.1-14.

Table 6.1-15.


Table 6.1-19. Table 6.2-1. Table 6.2-2. Table 6.3-1.


February 21, 2007

Summary Statistics for Grainsize, TOC, and Indicator Chemicals Results

in Subsurface Sediment, Study Area (RM 2-11)

Summary Statistics for Grainsize, TOC, and Indicator Chemicals,

Surface Sediment, Study Area Riparian Zone (RM 2-11)


Surface Sediment, Downtown Corridor Riparian Zone (RM 11-15.5)


Surface Sediment, Study Area Upriver Riparian Zone (RM 15.5-26)


Subsurface Sediment, Study Area Riparian Zone (RM 2-11


Subsurface Sediment, Downstream Riparian Zone (RM 0-2)


in Surface Sediment, Downtown Corridor (RM 11-15.5)


in Subsurface Sediment, Downtown Corridor (RM 11-15.5)


in Surface Sediment, Upriver (RM 15.5-26)


in Surface Sediment, Downstream (RM 0-2)


in Subsurface Sediment, Downstream (RM 0-2)


in Surface Sediment, Multnomah Channel

Polycyclic Aromatic Hydrocarbons by Number of Fused Aromatic Rings

Samples Selected for Statistical Comparisons by Subarea

Summary Statistics for the Selected Chemicals in each Subarea, post

ROS Data Reduction

Pair-Wise Statistical Results Comparisons of the Means for Each

Analyte Among Station Groupings

Summary Statistics for Selected Chemicals in the Riparian Zone (+13 to

+22 NAVD88) by Subarea

Upriver Summary Statistics, Post-ROS Data Reduction

Metals Tolerance Limits

Total PCB data (Aroclors) from Collocated Stations in the Nature and

Extent Date Set

Summary of Data from Study Area Collocated Pairs

Summary of TZW Analytes Selected for Mapping

Summary of Map Presentation of Nature and Extent of TZW Chemistry

Water Quality Monitoring Locations in the Lower Willamette River

xviii


Table 6.3-2.

Table 6.4-1.






Table 10.1-7. Table 10.1-8.

Table 10.1-9. Table 10.1-10. Table 10.1-11. Table 10.1-12. Table 10.1-13. Table 10.1-14.

Table 10.1-15.


February 21, 2007

Summary Statistics for Conventional and COPC Analytes in Round 2A Surface Water Summary Statistics for Indicator Chemicals in Invertebrate Tissues by Area Summary Statistics for Indicator Chemicals for Fish Tissues by Area Summary of iCOCs, Potential iCOCs, and Select TZW Analytes Analyte Summary for Loading Estimates - Surface Water Summary of Upland Sites with Existing or DEQ Expected Stormwater Data Anlayte Summary for Loading Estimates - Stormwater Runoff Anlayte Summary for Loading Estimates - Groundwater Plume Anlayte Summary for Loading Estimates - Air Deposition Anlayte Summary for Loading Estimates - Groundwater Advection Ranges of Estimated Cumulative Excess Lifetime Cancer Risks and Hazard Indices for Portland Harbor Human Health Scenarios Initial Chemicals of Concern for Human Health Round 2 COPCs for Ecological Receptors Based on the Screening Level ERA iCOCs for Ecological Receptors Based on the Round 2 ERA Data Needs for the BERA Sediment Spatial Scales for the Application of iPRGs to Development of iAOPCs for Human Health and Ecological Exposure Scenarios Initial Chemicals of Concern for Direct Exposure to Sediment Initial Chemicals of Concern for Fish and Shellfish Consumption Target Tissue Levels for Nontribal Adult Fish Ingestion Target Tissue Levels for Nontribal Child Fish Ingestion Target Tissue Levels for Native American Adult and Child Fish Ingestion Target Tissue Levels for Shellfish Ingestion Comparison of Fish Tissue Metals Concentrations in ISA and Upstream Samples Risk Thresholds for Beach Sediment Exceedances Details of Ecological iPRG Development Model Runs Human Health iPRG development for iCOCs Human Health iPRGs used for iAOPC development Summary of SWAC Calculations for Ecological iCOCs Initial Ecological COCs for Round 2 Report and iPRG/iAOPC Development Chemicals Statistically Associated with Benthic Toxicity in the Floating Percentile Model (FPM)

xix


Table 10.2-1. Table 10.3-1.

Table 10.3-2.



Table 11.1-1. Table 11.2-1.

Table 11.2-2.

Table 11.2-3.

Table 11.2-4.

Table 11.2-5. Table 11.2-6.

Table 11.2-7.

Table 11.3.1-1a. Table 11.3.1-1b. Table 11.3.1-1c. Table 11.3.1-2. Table 11.3.1-3.

Table 11.3.2-1. Table 11.3.2-2.

Table 11.3.3-1a. Table 11.3.3-1b. Table 11.3.3-2.


February 21, 2007

Background Concentrations Used in Hill-Topping Procedure Initial Preliminary Remediation Goals for Direct Exposure to Beach Sediment Initial Preliminary Remediation Goals for Direct Exposure to In-Water Sediment Initial Preliminary Remediation Goals for Nontribal Adult Fish Ingestion Initial Preliminary Remediation Goals for Nontribal Child Fish Ingestion Initial Preliminary Remediation Goals for Native American Adult and Child Fish Ingestion Initial Preliminary Remediation Goals for Shellfish Ingestion Fish Sediment iPRG Values for Development of Ecological iAOPCs Wildlife Sediment iPRG Values for Development of Ecological iAOPCs Initial Areas of Potential Concern Summary of Human Health and Ecological Risks Lower Willamette Group Summary of iCOCs Potential iCOCs Summary Statistics for Total Aroclor and Total PCB Congener Results in Study Area (RM 2-11) Sediment Summary Statistics for Total Aroclor and Total PCB Congener Results in Study Area (RM 2-11) Surface Water Summary Statistics for Total Aroclor and Total PCB Congener Results in Study Area (RM 2-11) Vertebrate Tissue Summary Statistics for Total Aroclor and Total PCB Congener Results in Study Area (RM 2-11) Invertebrate Tissue Upland Site Pathway Assessment Summary for Site-wide AOPC Relative Contribution of PCBs from Individual iAOPCs to the Site-wide iAOPC Preliminary Relative Contribution of Migration Pathways to the Site-Wide iAOPC iCOC Summary Statistics for Sediment - iAOPC 1 iCOC Summary Statistics for Surface Water - iAOPC 1 iCOC Summary Statistics for Biota - iAOPC 1 Potential Sources and Transport Pathways Assessment - AOPC 1 Preliminary Evaluaton of Relative Contribution of Migration Pathways to iAOPC 1 iCOC Summary Statistics for Sediment iAOPC 2 Preliminary Assessment of Relative Contribution of Migration Pathways to iAOPC 2 iCOC Summary Statistics for Sediment iAOPC 3,4,5 iCOC Summary Statistics for Biota iAOPC 3,4,5 Potential Sources and Transport Pathways Assessment - iAOPCs 3, 4, and 5

xx


Table 11.3.3-3.


Table 11.3.5-1a. Table 11.3.5-1b. Table 11.3.5-2. Table 11.3.5-3.

Table 11.3.6-1a. Table 11.3.6-1b. Table 11.3.6-1c. Table 11.3.6-1d. Table 11.3.6-2. Table 11.3.6-3.


Table 11.3.8-1. Table 11.3.8-2. Table 11.3.8-3.

Table 11-3.9-1a. Table 11-3.9-1b. Table 11.3.9-1c. Table 11.3.9-1d. Table 11.3.9-2. Table 11.3.9-3.

Table 11.3.10-1a. Table 11.3.10.1b. Table 11.3.10-1c.


February 21, 2007

Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPCs 3, 4, and 5 iCOC Summary Statistics for Sediment - iAOPC T4 iCOC Summary Statistics for Surface Water - iAOPC T4 iCOC Summary Statistics for Tissue - iAOPC T4 Potential Sources and Transport Pathways Assessment - iAOPC T4 Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPC T4 iCOC Summary Statistics for Sediment iAOPC 6 iCOC Summary Statistics for TZW iAOPC 6 Potential Sources and Transport Pathways Assessment - iAOPC 6 Preliminary Evaluaton of Relative Contribution of Migration Pathways to iAOPC 6 iCOC Summary Statistics for Sediment iAOPC 7 iCOC Summary Statistics for Surface Water iAOPC 7 iCOC Summary Statistics for Biota - iAOPC 7 iCOC Summary Statistics for Porewater - iAOPC 7 Potential Sources and Transport Pathways Assessment - iAOPC 7 Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPC 7 iCOC Summary Statistics for Sediment - iAOPC 8 iCOC Summary Statistics for Sediment - iAOPC 9 iCOC Summary Statistics for Tissue - iAOPC 8 Potential Sources and Transport Pathways Assessment - iAOPCs 8 and 9 Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPCs 8 and 9 iCOC Summary Statistics for Sediment - iAOPC 10 Potential Sources and Transport Pathways Assessment - iAOPC 10 Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPC 10 iCOC Summary Statistics for Sediment - iAOPC 11 iCOC Summay Statistics for Surface Water - iAOPC 11 iCOC Summary Statistics for Tissue - iAOPC 11 iCOC Summary Statistics for TZW iAOPC 11 Potential Sources and Transport Pathways Assessment - iAOPC 11 Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPC 11 iCOC Summary Statistics for Sediment - iAOPC 13 iCOC Summay Statistics for Surface Water - iAOPC 13 iCOC Summary Statistics for Porewater - iAOPC 13

xxi


Table 11.3.10-1d. Table 11.3.10-2. Table 11.3.10-3.

Table 11.3.11-1a. Table 11.3.11-1b. Table 11.3.11-1c. Table 11.3.11-1d. Table 11.3.11-1e. Table 11.3.11-2. Table 11.3.11-3.

Table 11.3.12-1a. Table 11.3.12-1b. Table 11.3.12-2. Table 11.3.12-3.


Table 11.3.14-1. Table 11.3.14-2. Table 11.3.14-3.

Table 11.3.15-1a. Table 11.3.15-1b. Table 11.3.15-1c. Table 11.3.15-1d. Table 11.3.15-2. Table 11.3.15-3.

Table 11.3.16-1a. Table 11.3.16-1b. Table 11.3.16-1c. Table 11.3.16-1d. Table 11.3.16-2.


February 21, 2007

iCOC Summary Statistics for Tissue - iAOPC 13

Potential Sources and Transport Pathways Assessment - iAOPCs 12 and 13

Preliminary Evaluation of Relative Contribution of Migration Pathways

to iAOPC 13

iCOC Summary Statistics for Sediment iAOPC 14

iAOPC 14 Surface Water Samples Summary Statistics

iCOC Summary Statistics for Tissue iAOPC 14

iCOC Summary Statistics for Porewater iAOPC 14

Summary Statistics for TZW iAOPC 14

Potential Sources and Transport Pathways Assessment for iAOPC 14


to iAOPC 14

iCOC Summary Statistics for Sediment - iAOPC 15


Potential Sources and Transport Pathways Assessment - iAOPCs 15 and 16


to iAOPCs 15 and 16


iCOC Summary Statistics for Surface Water - iAOPC 17


Potential Sources and Transport Pathways Assessment - iAOPC 17.


to iAOPC 17

iCOC Summary Statistics for Sediment iAOPC 18

Potential Sources and Transport Pathways Assessment - iAOPC 18


to iAOPC 18


iCOC Summary Statistics for Surface Water - iAOPC 19


Summary Statistics for Porewater - iAOPC 19

Potential Sources and Transport Pathways Assessment - iAOPC 19

Preliminary Evaluaton of Relative Contribution of Migration Pathways

to iAOPC 19

iCOC Summary Statistics for Sediment iAOPCs 20, 21, 22, and 23

iCOC Summary Statistics for Surface Water iAOPCs 20, 21, 22, and 23

iCOC Summary Statistics for Porewater iAOPCs 20, 21, 22, and 23

iCOC Summary Statistics for Tissue iAOPCs 20, 21, 22, and 23

Potential Sources and Transport Pathways Assessment - iAOPCs 20, 21,

22, and 23

xxii


February 21, 2007

Table 11.3.16-3. Preliminary Evaluation of Relative Contribution of Migration Pathways to iAOPCs 20, 21, 22, and 23

Table 11.3.17-1a. iCOC Summary Statistics for Sediment - iAOPC 24 Table 11.3.17-1b. iCOC Summary Statistics for Surface Water - iAOPC 24 Table 11.3.17-1c. iCOC Summary Statistics for Biota - iAOPC 24 Table 11.3.17-2. Preliminary Evaluation of Relative Contribution of Migration Pathways

to iAOPC 24 Table 11.3.18-1. iCOC Summary Statistics for Sediment iAOPC 25 Table 11.3.18-2. Preliminary Evaluation of Relative Contribution of Migration Pathways

to iAOPC 25 Table 11.3.19-1. iCOC Summary Statistics for Sediment - AOPC 26 Table 11.3.19-2. Potential Sources and Transport Pathways Assessment - AOPC 26 Table 11.3.19-3. Preliminary Evaluation of Relative Contribution of Migration Pathways

to iAOPC 26 Table 11.3.20-1. iCOC Summary Statistics for Sediment - iAOPC 27 Table 11.3.20-2. Preliminary Evaluation of Relative Contribution of Migration Pathways

to iAOPC 27 Table 12.0-1. Harbor-Wide Data Needs Table 12.0-2. Area-Specific Data Needs

xxiii


February 21, 2007

This page intentionally left blank.

xxiv


Map 1.1.

Map 2.1-1at. Map 2.1-2ad. Map 2.1-3at. Map 2.1-4. Map 2.1-5. Map 2.2-1ad.

Map 4.1-1ar. Map 4.1-2ae. Map 4.1-3. Map 4.1-4ai. Map 4.1-5ae. Map 4.1-6. Map 4.1-7. Map 4.1-8. Map 4.1-9. Map 4.1-10. Map 4.1-11ad. Map 4.1-12af. Map 4.4-1. Map 4.4-2. Map 4.4-3. Map 4.4-4. Map 4.4-5ac. Map 4.4-6. Map 4.4-7. Map 4.5-1. Map 4.5-2. Map 4.6-1. Map 4.6-2. Map 4.7-1.

Map 5.1-1ah.

Map 5.1-2.

Map 5.2-1ad.


February 21, 2007

LIST OF MAPS

Site and Vicinity Map

Surface Sediment Sample Station Locations by Survey Code Fish and Invertebrate Tissue Sampling Locations Subsurface Sediment Sample Station Locations by Survey Code Transition Zone Water; Sampling Locations Summary R2A Surface Water Station Map Riparian Sampling Locations

2005 Aerial Photos Land Zoning and Ownership in Portland Harbor Dredged and Capped Areas Since 1997 Stormwater Basin Characterization (RMs 2 to 5, 5 to 8, 8 to 11) Composited Historic Images General Land Use in 1936 General Land Use in 1948 General Land Use in 1961 General Land Use in 1974 General Land Use in 2001 Historic Shoreline Changes Historic Overwater Operations 2004 Bathymetry Hillshade. Bathymetric Change, Winter 2002 to Winter 2004 Contoured Surface Sediment Texture, Percent Fines Contoured Surface Sediment Total Organic Carbon Content, Percent TOC. Sediment Texture With Depth, Percent Fines. Sedflume Core Locations. Bed Shear Results from HyDiesel-Range Hydrocarbonmodel LWR Predicted Bed Shear Stresses and Sediment Transport Regimes Schematic Willamette Riverbank Cross Section (River Mile 2-11) Riverbank Types River Mile 2 to 11 Wildlife Habitat in the Study Area Designated Potential Human Use Areas and Associated Beach Sediment Samples (KJC)

Extent of Groundwater Impact, Plume Maps Riverbank Conditions ECSI Facilities and Portland Outfalls Upstream of River Mile 11

xxv


Map 6.1-1a,b.

Map 6.1-2a,b.

Map 6.1-3a,b.

Map 6.1-4a,b.

Map 6.1-5a,b.

Map 6.1-6a,b.

Map 6.1-7a,b.

Map 6.1-8a,b.

Map 6.1-9a,b.

Map 6.1-10a,b.

Map 6.1-11a,b.

Map 6.1-12a,b.

Map 6.1-13a,b.

Map 6.1-14a,b.

Map 6.1-15a,b.

Map 6.1-16a,b.

Map 6.1-17a,b.

Map 6.1-18a,b.

Map 6.1-19a,b.

Map 6.1-20a,b.

Map 6.1-21a,b.


February 21, 2007

Maximum Concentrations in Surface and Subsurface Sediment, Arsenic

(mg/kg)

Maximum Concentrations in Surface and Subsurface Sediment, Mercury

(mg/kg)

Maximum Concentrations in Surface and Subsurface Sediment, Zinc

(mg/kg)

Maximum Concentrations in Surface and Subsurface Sediment,

Tributyltin Ion (g/kg).

Maximum Concentrations in Surface and Subsurface Sediment, Total

PCB Aroclors (g/kg)


PCB Congeners (g/kg)


Dioxin/Furan 2,3,7,8-TCDD TEQ (pg/g)


PCB 2,3,7,8-TCDD TEQ (pg/g)

Maximum Concentrations in Surface and Subsurface Sediment, Total of

2,4' and 4,4'-DDD, -DDE, DDT (g/kg)


2,4' and 4,4'-DDD (g/kg)


2,4' and 4,4'-DDE (g/kg)


2,4' and 4,4'-DDT (g/kg)

Maximum Concentrations in Surface and Subsurface Sediment, Aldrin

(g/kg)

Maximum Concentrations in Surface and Subsurface Sediment, beta-

Hexachlorocyclohexane (g/kg)


Chlordanes (g/kg)


Polycyclic Aromatic HyDiesel-Range Hydrocarboncarbons (g/kg)


HPAH (g/kg)


Phenanthrene (g/kg)


Benzo(a)anthracene (g/g)


Benzo(a)pyrene (g/kg)

Maximum Concentrations in Surface and Subsurface Sediment, Bis(2

ethylhexyl) phthalate (g/kg)

xxvi


Map 6.1-22a,b.

Map 6.1-23a,b.

Map 6.1-24ac.

Map 6.1-25ac.

Map 6.1-26ac.

Map 6.1-27ac.

Map 6.1-28ac.

Map 6.1-29ac.

Map 6.1-30ac.

Map 6.1-31ac.

Map 6.1-32ac.

Map 6.1-33ac.

Map 6.1-34ac.

Map 6.1-35ac.

Map 6.1-36ac.

Map 6.1-37ac.

Map 6.1-38ac.

Map 6.1-39ac.

Map 6.1-40ac.

Map 6.1-41ac.

Map 6.1-42ac.

Map 6.1-43ac.

Map 6.1-44ac.

Map 6.1-45ac.

Map 6.1-46ac.

Map 6.1-47.

Map 6.1-48aj.


February 21, 2007


Hexachlorobenzene (g/kg)


Petroleum HyDiesel-Range Hydrocarboncarbons (mg/kg)

Concentrations in Sediment With Depth, Arsenic (mg/kg)

Concentrations in Sediment With Depth, Mercury (mg/kg)

Concentrations in Sediment With Depth, Zinc (mg/kg)

Concentrations in Sediment With Depth, Tributyltin Ion (g/kg)

Concentrations in Sediment With Depth, Total PCB Aroclors (g/kg)

Concentrations in Sediment With Depth, Total PCB Congeners (g/kg)

Concentrations in Sediment With Depth, Dioxin/Furan 2,3,7,8-TCDD

TEQ (pg/g)

Concentrations in Sediment With Depth, PCB Toxicity (2,3,7,8-TCDD

TEQ, pg/g)

Concentrations in Sediment With Depth, Total of 2,4' and 4,4'-DDD,

DDE, DDT (g/kg)

Concentrations in Sediment With Depth, Total of 2,4' and 4,4'-DDD

(g/kg)

Concentrations in Sediment With Depth, Total of 2,4' and 4,4'-DDE

(g/kg)

Concentrations in Sediment With Depth, Total of 2,4' and 4,4'-DDT

(g/kg)

Concentrations in Sediment With Depth, Aldrin (g/kg)

Concentrations in Sediment With Depth, betaHexachlorocyclohexane

(g/kg)

Concentrations in Sediment With Depth, Total Chlordanes (g/kg)

Concentrations in Sediment With Depth, Polycyclic Aromatic HyDiesel-

Range Hydrocarboncarbons (g/kg)

Concentrations in Sediment With Depth, Total HPAH (g/kg)

Concentrations in Sediment With Depth, Phenanthrene (g/kg)

Concentrations in Sediment With Depth, Benzo(a)anthracene (g/g)

Concentrations in Sediment With Depth, Benzo(a)pyrene (g/kg)

Concentrations in Sediment With Depth, Bis(2-ethylhexyl) phthalate

(g/kg)

Concentrations in Sediment With Depth, Hexachlorobenzene (g/kg)

Concentrations in Sediment With Depth, Total Petroleum HyDiesel-

Range Hydrocarboncarbons (mg/kg)

Map 6-SMF20. Schematic of Willamette River Eastern Nearshore,

Navigation Channel, and Western Nearshore Areas (River Mile 2-11)

PCB Aroclor Composition in Surface Sediment (g/kg)

xxvii


Map 6.1-49ai.

Map 6.1-50ai.

Map 6.1-51ah.

Map 6.1-52ah.

Map 6.1-53ah.

Map 6.1-54aj.

Map 6.1-55aj.

Map 6.1-56aj.

Map 6.1-57aj.

Map 6.2-1a.

Map 6.2-1b.

Map 6.2-1c.

Map 6.2-1d.

Map 6.2-2a.

Map 6.2-2b.

Map 6.2-2c.

Map 6.2-3a. Map 6.2-3b.

Map 6.2-3c.

Map 6.2-3d.

Map 6.2-4a.

Map 6.2-4b.

Map 6.2-4c.

Map 6.2-4d.


February 21, 2007

PCB Aroclor Composition in Subsurface Sediment at Depth of

Maximum Concentration (g/kg)

PCB Homolog Composition in Surface Sediment (g/kg)

PCB Homolog Composition in Subsurface Sediment at Depth of

Maximum Concentration (g/kg)

Dioxin Homolog Composition in Surface Sediment (pg/g)

Dioxin Homolog Composition in All Subsurface Sediment Samples

(pg/g)

DDx Composition in Surface Sediment (g/kg)

DDx Composition in Subsurface Sediment at Depth of Maximum

Concentration (g/kg)

PAH Composition in Surface Sediment (g/kg)

PAH Composition in Subsurface Sediment at Depth of Maximum

Concentration (g/kg)

Transition Zone Water Sample Results; River Mile 4 to 5 - Total PAH

(g/L)


(g/L)


(g/L)


(g/L)

Transition Zone Water Sample Results; River Mile 4 to 5 -

Benzo(a)pyrene (g/L)





Transition Zone Water Sample Results; River Mile 4 to 5 - TPH (g/L)




Transition Zone Water Sample Results; River Mile 4 to 5 - Manganese

(g/L)


(g/L)


(g/L)


(g/L)

xxviii


Map 6.2-4e.

Map 6.2-5a.

Map 6.2-5b.

Map 6.2-5c.

Map 6.2-5d.

Map 6.2-5e.

Map 6.2-6. Map 6.2-7a.

Map 6.2-7b.

Map 6.2-8a.

Map 6.2-8b.

Map 6.2-8c.

Map 6.2-8d.

Map 6.2-8e.

Map 6.2-9a.

Map 6.2-9b.

Map 6.2-9c.

Map 6.3-1. Map 6.3-2. Map 6.3-3. Map 6.3-4. Map 6.3-5. Map 6.3-6. Map 6.3-7.


February 21, 2007


(g/L)

Transition Zone Water Sample Results; River Mile 4 to 5 - Arsenic

(g/L)


(g/L)


(g/L)


(g/L)


(g/L)

Transition Zone Water Sample Results; River Mile 6 to 8 - DDX (g/L)

Transition Zone Water Sample Results; River Mile 6 to 7 - MCB and

Total DCB (g/L)

Transition Zone Water Sample Results; River Mile 7 to 8 - MCB and

Total DCB (g/L)

Transition Zone Water Sample Results; River Mile 4 to 5 - Total BTEX

(g/L)


(g/L)


(g/L)


(g/L)


(g/L)

Transition Zone Water Sample Results; River Mile 6 to 7 - Total

Aliphatic CVOCs (g/L)





Round 2A Surface Water Station Locations

Total PCB Congeners - XAD Results (pg/L)

Total PCB Congener TEQ - XAD Results (pg/L)

PCB Homolog Composition - XAD Results (pg/L)

Dioxin 2,3,7,8-TCDD Toxic Equivalency - XAD Results (pg/L)

Dioxin 2,3,7,8-TCDD Toxic Equivalency - XAD Results (pg/L)

Dioxin Homolog Composition - XAD Results (pg/L)

xxix


Map 6.3-8.

Map 6.3-9.

Map 6.3-10.

Map 6.3-11.

Map 6.3-12.

Map 6.3-13.

Map 6.3-14.

Map 6.3-15.

Map 6.3-16.

Map 6.3-17.

Map 6.3-18.

Map 6.4-1ae.

Map 6.4-1f ah.

Map 6.4-2ac.

Map 6.4-3ad.

Map 6.4-4af.

Map 6.4-5ac.

Map 6.4-6ae.

Map 6.4-7ae.

Map 6.4-8ad.

Map 6.4-9ad.

Map 6.4-10ae.

Map 6.4-11ac.

Map 6.4-12ae.

Map 6.4-13ad.

Map 6.4-14ad.

Map 6.4-15ad.

Map 10.4-1.

Map 10.4-2.

Map 10.5-1aj.

Map 10.5-2aj.

Map 10.5-3aj.

Map 11.3.1-1. Map 11.3.1-2a. Map 11.3.1-2b.


February 21, 2007

Dioxin 2,3,7,8-TCDD Toxic Equivalence Profiles in Round 2 Surface Water Samples Total 2,4'- and 4,4'-DDD, DDE, and DDT - XAD Results (pg/L) Total 2,4' and 4,4'-DDD, DDE and DDT Composition - XAD Results (pg/L) Total Aldrin Concentrations - XAD Results (pg/L) Total beta-Hexachlorocyclohexane - XAD Results (pg/L) Total Chlordanes - XAD Results (pg/L) Total Benzo(a)pyrene - XAD Results (pg/L) Total PAHs - XAD Results (ng/L) Total Hexachlorobenzene - XAD Results (pg/L) Total Arsenic - Peristaltic Results (g/L) Total Lead - Peristaltic Results (g/L) Fish Tissue Result Tables - Excluding Chinook Stomach Contents Fish Tissue Result Tables - Chinook Stomach Contents Crayfish Invertebrate Tissue Analysis Lumbriculus variegatus - Invertebrate Tissue Analysis Corbicula fluminea - Invertebrate Tissue Analysis Epibenthic (multiplate) - Invertebrate Tissue Analysis Pie Charts for PCB Aroclor Composition in Fish Tissues Pie Charts for PCB Homolog Composition in Fish Tissue Pie Charts for PCB Aroclor Composition in Invertebrate Tissue Pie Charts for PCB Homolog Composition in Invertebrate Tissue Pie Charts for Dioxin Homolog Composition in Fish Tissue Pie Charts for Dioxin/Furan Homolog Composition in Invertebrate Tissue Pie Charts for DDx Composition in Fish Tissue Pie Charts for DDx Composition in Invertebrate Tissue Pie Charts for PAH Composition in Fish Tissue Pie Charts for PAH Composition in Invertebrate Tissue Initial Areas of Potential Concern Human Health Exposure Scenarios Initial Areas of Potential Concern Ecological Receptors Delineation of Combined Initial Areas of Potential Concern with All Combined Information Shown Combined Initial Areas of Potential Concern Combined Initial Areas of Potential Concern with Individual Component Layers Shown Site Overview iAOPC 1 Surface Lithology as Percent Fines iAOPC 1 Subsurface Lithology as Percent Fines iAOPC 1

xxx


Map 11.3.1-3.

Map 11.3.1-4.

Map 11.3.1-5.

Map 11.3.1-6.

Map 11.3.1-7.

Map 11.3.1-8.

Map 11.3.1-9.

Map 11.3.1-10.

Map 11.3.2-1.

Map 11.3.2-2a.

Map 11.3.2-2b.

Map 11.3.2-3.

Map 11.3.2-4.

Map 11.3.2-5.

Map 11.3.2-6 .

Map 11.3.3-1.

Map 11.3.3-2a.

Map 11.3.3-2b.

Map 11.3.3-2c.

Map 11.3.3-3.

Map 11.3.3-4.

Map 11.3.3-5a.

Map 11.3.3-5b.

Map 11.3.3-6a.

Map 11.3.3-6b.

Map 11.3.3-7.

Map 11.3.3-8.

Map 11.3.3-9.

Map 11.3.3-10.

Map 11.3.3-11.

Map 11.3.3-12.

Map 11.3.4-1.

Map 11.3.4-2.

Map 11.3.4-3a.

Map 11.3.4-3b.

Map 11.3.4-4.

Map 11.3.4-5.

Map 11.3.4-6a.

Map 11.3.4-6b.


February 21, 2007

PCB Aroclors in Surface Sediment iAOPC 1

PCB Congeners in Surface Sediment iAOPC 1

Documents

Portland Harbor RI/FS: Comprehensive round 2 site ... · PORTLAND HARBOR RI/FS COMPREHENSIVE ROUND 2 SITE CHARACTERIZATION SUMMARY AND DATA GAPS ANALYSIS REPORT February 21, 2007