Human Health Risk Assessment

2,53

MB

70

stron

6555

ID

Tetra Tech, Inc.

2002

rok

Table of Contents

TABLES. VII

FIGURES VIII

ACRONYMS AND ABBREVIATIONS .IX

1.0 INTRODUCTION.1

2.0 SUMMARY OF EMISSIONS FROM TOCDF AND CAMDS2

2.1 SOURCES AT TOCDF 2

2.2 SOURCES AT CAMDS .3

2.3 ESTIMATION OF EMISSION RATES.3

3.0 EXPOSURE ASSESSMENT.7

3.1 EXPOSURE SETTING 7

3.3 FATE, TRANSPORT, AND EXPOSURE PARAMETERS11

3.3.1 Parameter Values for GB, VX, and Sulfur Mustard.11

3.3.2 Evaluation of Mutton and Goat’s Milk Pathways for the Subsistence Rancher 11

3.3.2.1 Ingestion of Mutton.11

3.3.2.2 Ingestion of Goat’s Milk .13

3.3.3 Climatic and Water Body Information.13

3.3.4 Modifications in the Procedures for the Risk Assessment .14

3.4 EVALUATION OF POLYCHLORINATED BIPHENYLS16

3.5 EVALUATION OF DIOXINS .16

3.6 EVALUATION OF LEAD .16

3.7 EVALUATION OF CHROMIUM .17

3.8 EVALUATION OF MERCURY17

4.0 RISK CHARACTERIZATION .18

4.1 ESTIMATION AND DESCRIPTION OF AGENT RISK AND HAZARD18

4.1.1 TOCDF Risks and Hazards from All COPCs 19

4.1.1.1 GB Campaign20

4.1.1.3 Sulfur Mustard Campaign.27

4.1.2 TOCDF Risks and Hazards from Detected COPCs Only 30

4.1.2.2 VX Campaign .32

4.1.2.3 Sulfur Mustard Campaign.32

4.1.3.1 Subsistence Rancher Adult and Child Scenarios 33

4.1.3.4 SunTen Water Skier Scenario .34

4.1.3.5 Rush Lake Adult and Child Recreationist Scenarios 34

4.1.3.6 Rainbow Reservoir Fisher Adult and Child Scenarios35

4.1.4 Cumulative Risks and Hazards 35

4.1.4.1 Subsistence Rancher Adult and Child Scenarios 36

4.1.4.2 Adult and Child Resident Scenarios36

4.1.4.4 SunTen Water Skier Scenario .37

4.1.4.5 Rush Lake Adult and Child Recreationist Scenarios 38

4.1.4.6 Rainbow Reservoir Fisher Adult and Child Scenarios39

4.1.5 Evaluation of Infant Breast Milk Pathway for Dioxins40

4.1.7 Evaluation of Acute Inhalation Hazards 42

4.1.8 Evaluation of Polychlorinated Biphenyls.43

4.1.9 Evaluation of Dioxins 43

4.1.11 Evaluation Of Risks And Hazards For Subsistence Rancher Who Works At DCD 44

4.2 UNCERTAINTY ANALYSIS45

4.2.1 Major Uncertainties45

4.3.1 Uncertainties Associated with Emission Rates 47

4.3.1.2 Total Organic Emission Rates.48

4.3.1.4 Polycyclic Aromatic Hydrocarbons 50

4.3.1.5 Ethyl Methanesulfonate 50

4.3.1.6 Mercury.51

4.3.2 Uncertainties Associated with COPC Fate and Transport Modeling.51

4.3.2.2 Hazard from Di-n-octylphthalate 52

4.3.2.3 Risk from Ethyl Methanesulfonate .53

4.3.2.4 Risk from Polycyclic Aromatic Hydrocarbons .53

4.3.2.5 Risk from Mercury54

4.3.2.6 Risk from Sulfur Mustard .54

5.0 DSHW STRATEGY FOR TARGET LEVEL EXCEEDANCES .56

6.0 REFERENCES58

APPENDICES