Table of Contents
Risk Assessment 
Based on ASTM Consultant’s Training Workshop 
Exposure Pathway Evaluation 
The Two Elements of Risk 
Federal Risk Assessment Paradigm 
Risk Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Toxicity Assessment 
Risk Assessment 
Exposure Assessment 
Exposure Assessment 
Exposure Assessment 
Exposure Assessment 
Exposure Assessment 
Example Exposure Factors 
Example Intake Equations 
Risk Assessment 
Risk Characterization 
Risk Characterization 
Calculating RBSL (RBEL) 
Example RBSL Equations 
Risk Characterization 
Risk Characterization 
Risk Characterization 
Risk Characterization 
Risk Characterization 
Risk Characterization 
Cumulative Risk Adjustment 
Cumulative Risk Adjustment 
Class Exercise # 1 
Class Exercise # 1 - Solution 
Estimation of Intake: Adult Ingestion of Water 
Class Exercise # 2 
Class Exercise # 2 - Solution 
Estimation of Intake: Adult Inhalation of Vapors 
Class Exercise # 3 
Class Exercise # 3 - Solution 
Estimation of Intake: Child Soil Ingestion 
Class Exercise # 4 
Class Exercise # 4 - Solution 
Risk Characterization: Carcinogens 
Class Exercise # 5 
Class Exercise # 5 - Solution 
Risk Characterization: Non-Carcinogens 
Class Exercise # 6 
Class Exercise # 6 - Solution 
Estimating RBSL in Groundwater  
for Benzene  
Class Exercise # 7 
Class Exercise # 7 - Solution 
Estimating RBSL in Groundwater  
for Toluene   | 
 Authors:  Jim Rocco/Eric Nichols/Lesley Hay Wilson 
Email:  hay_wilson@mail.utexas.edu 
Home Page: http:// www.ce.utexas.edu/stu/haywilli/home.html  |